Page 1 TELOS TWOx12 Advanced All Digital Dual Hybrid Multiline Broadcast Telephone System USER’S MANUAL Manual Version 1.0.1 for software version 1.0.1 and later 24 May, 2000...
Page 2: Customer Service
The URL is: http://www.telos-systems.com. Feedback We welcome feedback on any aspect of the Telos TWOx12 or this manual. In the past, many good ideas from users have made their way into software revisions or new products. Please contact us with your comments.
Page 3 Updates The operation of the Telos TWOx12 is determined almost entirely by software. A continuous program of improvement is underway. Contact us to determine if a newer release is more suitable to your needs. Trademarks Telos Systems, the Telos logo, TWO, TWOx12, and System 2101 are trademarks of TLS Corporation.
Page 4 Notices and Cautions Notices and Cautions Notices and Cautions Notices and Cautions CAUTION: THE INSTALLATION AND SERVICING INSTRUCTIONS IN THIS MANUAL ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.
Page 5 CANADA WARNING: “ This digital apparatus does not exceed the Class A limits for radio noise emissions set out in the Radio Interference Regulations of the Canadian Department of Communications.” “Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques (de les Class A) prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada.”...
Page 6: Table Of Contents
ISDN Worldwide (outside the USA & Canada): The S/T Interface..........22 2.5.2 Integration with a PBX using ISDN ....................24 2.5.3 Connecting the TWOx12 to POTS (Plain Old Telephone Service) ..........25 2.5.4 Mixed ISDN/Analog Configurations ....................27 Studio Audio Connections ........................30 2.6.1...
Page 7 ISDN Setup (if you ordered an analog TWOx12 see section 3.4)..........57 Worldwide ISDN Setup (outside USA & Canada):................ 58 USA & Canada ISDN Setup ......................59 Analog phone line setup (If you ordered an ISDN TWOx12 see section 3.3)......62 Is the ISDN working?..........................62 Levels, Levels, Levels..........................64 Time to test it out! ............................
Page 8 Menu Navigation ........................... 75 4.4.2 Changing from Producer to Talent mode..................75 4.4.3 Volume Menus............................76 TELOS DESKTOP DIRECTOR™ - GUIDE FOR CALL SCREENERS.....79 General Description........................... 79 Status Symbol ™ Icons & What They Mean ..................79 Buttons................................. 82 5.3.1 Line Control Buttons ..........................
Page 9 DETAILED CONFIGURATION & REFERENCE..........99 Level Metering ............................101 Status Displays............................103 Advanced: Setting the TWOx12’s Configuration................103 7.3.1 The Audio Menu..........................106 7.3.2 The Tel Menu............................116 7.3.3 The System Menu..........................122 Remote Control............................127 7.4.1 RS-232 Control ............................ 127 7.4.2...
Page 10 10 WARRANTY AND APPLICATION CAUTION ..........165 11 APPENDICES .....................167 11.1 Appendix 1 – Known Working SPID Formats by Telephone company ......... 167 11.2 Appendix 2 – Cable Guide........................169 Call Director to 2X12 Cable Pinout ....................171 Standard 10Base-T Ethernet Cable Pinout ..................171 ISDN S Interface Cable Pinout......................
Page 11: Conventions Used In This Manual
This information is important to safe operation of the equipment and warns of possible hazards. For you safety you should read these. IMPORTANT! This information is essential to getting the TWOx12 to work, or prevent damage to it. To avoid headaches read these. HOT TIP! This information will probably come in handy at some point.
Page 12 Amaze your technical friends with your voluminous knowledge of the TWOX12, ISDN, and hybrid technology! Not necessary for the ability to install and use the TWOx12, but this information might come in handy if you ever need to troubleshoot the system.
Page 13: Introduction
POTS to ISDN! At the heart of any broadcast system are the hybrids used. Based on the Telos TWO dual hybrid, the TWOx12 includes simply the best broadcast hybrids made. With a trans-hybrid loss of well over 70dB (when used on digital lines) it allows for the best possible announcer audio over the air.
Page 14: Why Isdn Makes Sense For Broadcast Talk Show Systems
Presently, the dial-up telephone network is nearly entirely digital, except for the “last mile” copper connections from the Central Office (Exchange) to the customer’s site. Telos’ new ISDN hybrids take advantage of this technology to deliver crystal clear caller audio to the radio studio.
Page 15 While the application of digital signal processing to the problem of separating host and caller audio – pioneered by Telos and used in all of our telephone interfaces – has made a dramatic improvement over pure analog systems, using digital phone lines for incoming calls further improves performance for several reasons: ISDN Lines are Inherently “4-wire”...
Page 16 TELOS TWOX12 USER’S MANUAL Lower Noise Because they are digital circuits, ISDN lines are not susceptible to induced noise. Analog lines are exposed to a variety of noise and impulse trouble-causers as they move across town on poles and through your building. Hum is the main one, given most line’s proximity to pole transformers and power lines, but there are also sources...
Page 17 — requiring only the initial conversion to digital, and doing away with the need to reconvert from digital to analog audio. AES/EBU outputs are provided on TWOx12 Talk Show System to help accomplish this direct connection to digital studio gear.
Page 18 TELOS TWOX12 USER’S MANUAL This page intentionally left blank. CHAPTER 1 INTRODUCTION...
Page 19: Installation
Section 7 has a detailed reference of all menus. The Telos TWOx12 mounts in a 2RU high space in a standard 19” rack. You do not need to pay special attention to cooling or ventilation, as the unit will operate in any environment where humans would be comfortable.
Page 20: System Configuration
1 program on hold analog source " Note that there are several configuration choices that you will be making in order to install the system in a given facility. A diagram of the TWOx12’s inputs and outputs follows. CHAPTER 2 INSTALLATION...
Page 21: Identifying Your Twox12 System - Analog Or Digital
Note that the system can easily be expanded to support up to four Desktop Directors™; Only one of the input options (AES/EBU or Analog) can be selected at a given time; POTS TWOx12 systems substitute 12 analog POTS circuits for the ISDN circuits shown above.
Page 22 TELOS TWOX12 USER’S MANUAL Analog TWOx12 version The Analog version of the TWOx12 has Telco interface cards in slots A, B, C, & D. Each interface supports three analog telephone circuits using standard RJ-11 style jacks. ISDN TWOx12 version The ISDN version of the TWOx12 has Telco interface cards in slots A, B, & C. Each interface supports two ISDN BRI circuits.
Page 23: Installation Checklist (Copy This Checklist And Use It To Help Organize Your Installation)
TWOx12. How many inputs on the console will be used? If only a single feed from the TWOx12 to the console will be used see “Routing” in section 7.3.1 for information on your options. Bring 1 or 2 of the Output (Caller) signals from the TWOx12 to your console.
Page 24 TELOS TWOX12 USER’S MANUAL If you will be using Assistant Producer 2.0 or any of the TWOx12’s remote input/output options to control the unit from another device see section 2.9 and make those connections now. Proceed to System Programming Checklist in section 3.
Page 25: Isdn Technology 101
ISDN Technology 101 This section offers an introduction to ISDN service. This introduction should be useful to help you understand how to order ISDN, and use it with the TWOx12. If you are familiar with ISDN you can skip to section 2.5.
Page 26: Ordering Isdn - An Introduction
Ordering ISDN – an introduction This section has a quick overview, for specific information on ordering ISDN see Appendix 6 (Euro ISDN) and Appendix 7 (USA & Canada). The Telos TWOx12 supports the usual protocol standards: For USA & Canada •...
Page 27 BRI circuit supports the Circuit Switched Voice (CSV) capability as well as data. HOT TIP! If this line may be “borrowed” at times for use with an audio codec, such as the Telos Zephyr or ZephyrExpress, then you need to be sure that the Circuit Switched Data (CSD) capability is enabled.
Page 28 It is impossible for the Telos TWOx12 to distinguish between a deactivated circuit and a malfunctioning circuit until you try to use it again. For this reason, if you are using ETS 300 and your phone system is mission critical, you should ask your Telecom Company to disable this function.
Page 29: Connections To The Telco Circuits
ISDN BRI lines. See section 2.5.2 for more on integrating the TWOx12 with a PBX. The above diagrams illustrate several possible configurations of the TWOx12 and incoming lines. CHAPTER 2 INSTALLATION...
Page 30: Connecting The Telos Twox12 To Isdn
The final option shown offers redundancy. Having at least one line directly from the phone company keeps your TWOx12 up and running even if one of the two routes is down due to a bad line.
Page 31 TELOS TWOX12 USER’S MANUAL ISDN TWOx12 Version The ISDN version of the TWOx12 has Telco interface cards in slots A, B, & C. Each interface supports two ISDN BRI circuits. Since each BRI circuit has two Telco channels (or “Lines”) there are 4 channels per BRI interface card.
Page 32: Isdn In Usa & Canada: Using The U Interface
In the rest of the world, the Telephone Company provides the NT1 and the 4-wire ISDN ‘S’ interface will be used via the 8 pin RJ-45 style jack. The ISDN interface in Telos TWOs shipped to these locations is provided only with this connection. Users outside the USA &...
Page 33 TELOS TWOX12 USER’S MANUAL ISDN U interface connector (USA & Canada only) FUNCTION Line (R) Line (T) ISDN U interface connector as provided on units shipped to the USA & Canada. Note, the polarity of the line connections should not matter.
Page 34: Isdn Worldwide (Outside The Usa & Canada): The S/T Interface
TELOS TWOX12 USER’S MANUAL ISDN Worldwide (outside the USA & Canada): The S/T Interface The Telos TWOx12 connects to the NT1 at one of its terminal jacks. The NT1 is sometimes generically called a NCTE (Network Channel Terminating Equipment) or, in some countries an NTBA.
Page 35 TELOS TWOX12 USER’S MANUAL ISDN S interface connector FUNCTION S Transmit to network + S Receive from network + S Receive from network - S Transmit to network - The S interface is a standard modular RJ-45 style jack with the pin-out shown above.
Page 36: Integration With A Pbx Using Isdn
• Both ends are wired identically. • The outside pairs are generally not required and may be omitted. The ISDN S interface on the Telos TWO does not provide power. Usually the Telecom company will arrange for power to the NT1 (NTBA).
Page 37: Connecting The Twox12 To Pots (Plain Old Telephone Service)
While BRI support is available on a number of PBXs, you should not plan to use ISDN ports on your PBX for the TWOx12 unless the configuration is on the above list. If not, you should arrange to test compatibility before purchasing the expansion module for your PBX.
Page 38 Service lines. These ports must not be connected to proprietary phone ports off a PBX. If you are uncertain if it is a POTS line don’t connect it to the TWOx12! If it is not POTS it won’t work, and it could cause damage to your system. You can easily check the type of line by connecting a standard analog telephone to it and check to see if it works.
Page 39: Mixed Isdn/Analog Configurations
A) 1 Analog interface (slot A) and 2 ISDN interfaces (slots B & C) for a total of 11 lines: A mixed interface TWOx12 with a POTS interface card in slot A and ISDN interface cards in slots B, & C. The POTS interface supports 3 circuits while the ISDN interface supports two ISDN BRI circuits.
Page 40 B, C, & D. The ISDN interface supports two ISDN BRI circuits while POTS interface supports 3 circuits. Since each BRI has two telco channels (or “Lines”) there are 4 channels per BRI interface card. Since the TWOx12 is a 12 line system, the last POTS port (D3) is not used in this configuration.
Page 41 This table shows the relationship between the TWOx12's connectors, the Telco circuits, and the system "line" numbers for the mixed POTS/ISDN TWOx12 described above. See section 3 for a form you can use to organize this Information prior to programming your system.
Page 42: Studio Audio Connections
2.6.1 Mix-Minus What is a mix-minus? The Telos TWOx12 must be fed send-to-caller audio which is free of the caller audio, a “mix-minus”. A mix-minus is a mix of all of your audio sources which will be placed on- air (or recorded) except the incoming caller audio–thus the “mix-minus” designation. The European term “mix minus one”...
Page 43 TELOS TWOX12 USER’S MANUAL MIX- MINUS TIP! This arrangement is very flexible as it allows the operator to place any or all sources in Utility for the caller to hear. Also, if the talent wishes to talk about the caller without him/her hearing, the talent’s microphone need only be taken out of Utility to...
Page 44: Why Do I Need A Mix-Minus
CURIOSITY NOTE! This is why we at Telos do not claim our hybrids will work without a mix minus. Sure, they might work without a mix- minus (it has been done), giving borderline performance, but that’s not good enough. Do the job right and use a mix- minus! An additional problem is the potential for feedback through the hybrid.
Page 45 The TWOx12’s Feed Thru option in the Audio menu (see section 7.3.1) is enabled to create this mode. All audio is sent into the TWOx12 where the caller audio is mixed in. The resulting mix is output from the TWOx12’s Output (Caller) outputs.
Page 46: Phones And Remotes
The Telos TWOx12 really shows its stuff in this situation. Because it has so much trans- hybrid loss, the leakage is not at all likely to be a problem. When there is a problem, you can solve it by increasing the DuplexLevel (ducking) selection in the Audio menu.
Page 47: Input- (To Caller ) Left & Right Analog Audio
TELOS TWOX12 USER’S MANUAL Σ Main Program Output Microphone Other Sources Zephyr for music, etc. Telephone Trans- Mix-Minus Σ mission Path Σ Remote Σ Mix-Minus Talent Headset Studio Console Phone Hybrid REMOTE SITE STUDIO Diagram showing system set-up for remotes with delay in the transmission path and calls taken at the studio.
Page 48: Poh (Program On Hold) Input
CURIOSITY NOTE! The Telos TWOx12 has the more common pin- outs used for three pin XLR inputs & outputs. You can easily remember the correct signals when wiring connectors using the phrase “George Washington Bridge.” Pin 1 = G = Ground, Pin 2 = W = “+” = White (typical color in mic cable, if there is no white there will be a red conductor), and Pin 3 = B = “- ”...
Page 49: Output - (Caller) Left & Right Audio
TELOS TWOX12 USER’S MANUAL 2.6.4 Output – (Caller) Left & Right Audio Output – Caller FUNCTION Ground Audio + Audio - The analog audio outputs have the following characteristics: • Active differential • Output level: -7 to +8 dBu, nominal (See section 3.4.1 for setting this parameter).
Page 50: Desktop Director Connections
You can find more information about setting the AES Out sync modes in section 7.3.1. Desktop Director™ Connections The TWOx12 has 2 Desktop Director™ ports located in slot F of the system. Each port supports 1 Desktop Director™ directly. A second Desktop Director can be added to each port (for a total of 4) using a Desktop Director Expander Kit (part number 0212-1400) available from your Telos Dealer.
Page 51 TELOS TWOX12 USER’S MANUAL Jack on Desktop Director™ FUNCTION Not used Not used S Transmit to 2X12 + S Receive from 2X12 + S Receive from 2X12 - S Transmit to 2X12 - Power Sink – Power Sink + (Top) The interface connector on the Desktop Director™...
Page 52 PS2 Power Source +(Top) The TWOx12 has 2 Desktop Director™ ports in Interface slot F. Power is provided on pins 7 & 8 for one Director per port. If more than one Desktop Director™ is required on a single port an external power supply will be required (see below).
Page 53: Wiring Configurations For The Desktop Director
Category 3 type (Cat 3) or higher cable must be used; we suggest Category 5 type (Cat 5) wire. The usual configuration of two Desktop Directors involves merely plugging in this supplied cable to the Director and TWOx12 as illustrated below: CHAPTER 2...
Page 54: Multiple Desktop Directors On A Single Port
If the Desktop Director™ must be located more than 250 feet (76 Meters) from the TWOx12 you will need to use a local power supply (Desktop Director Expander Kit part # 0212-1400) to supply power to it. In that case, your configuration will look like the...
Page 55 TELOS TWOX12 USER’S MANUAL 1100 feet (338 meters) maximum Distance "A" Lucent Power Supply To TWOx12 Desktop Director Port Distance "B" 8-Pin (RJ-45) Modular splitter NOTES: 1) A must be less than 120 feet (37 meters) 2) B must be less than 33 feet (10 meters) 3) Desktop Director B must have termination resistors removed.
Page 56: Desktop Director Assembly
TELOS TWOX12 USER’S MANUAL 7. Reconnect the Desktop Director cable and turn the unit upright 8. Check for proper operation Desktop Director Assembly Wire assembly This should be fairly self explanatory. The black “curly cord” plugs into the handset. The other end of this cord should be plugged into the small 4 position/4 pin modular (RJ-22 style) jack near the front left of the unit.
Page 57: Ac (Mains) Power
TELOS TWOX12 USER’S MANUAL AC (mains) Power I N T E R N A L F U S E U N I V E R S A L P O W E R I N P U T 9 0 - 2 6 0 V A C The AC receptacle connects mains power to the unit with a standard IEC (International Electrotechnical Committee) power cord and provides an on/off switch.
Page 58: Remote Control Ports
TELOS TWOX12 USER’S MANUAL Remote Control Ports 2.9.1 Parallel Remote Control This is a 15 pin D-Sub connector. This port provides status outputs (tallies) from the system and allows system control using simple logic inputs or switch closures. It also has outputs to control external equipment such as an Audio Delay or Recording device.
Page 59 TELOS TWOX12 USER’S MANUAL FUNCTION Ground <Reserved> Record Start Out Record Stop Out <Reserved> Ring Mute In +5 VDC (400 mA max) User Out (Dump) Ringing Out <Reserved> <Reserved> This power pin is in parallel with pin 3 of the SAA ports Note that the +5 volts DC on pin 8 is in parallel with pin 3 on both SAA ports.
Page 60 TELOS TWOX12 USER’S MANUAL • All inputs are specially treated to accept either a voltage (up to 24 VDC), or a closure to ground, which may be provided by switches, relays, or logic outputs. The inputs are active low. •...
Page 61: Special Auxiliary Access Ports
38,400 bits per second. The Clear to Send (CTS) handshake signal is provided, however any handshake signals from the external equipment are ignored. This port is primarily for troubleshooting purposes and should be used as directed by Telos Customer Support. Connector is a 9 pin D-Sub connector with the following pin-out:...
Page 62 “straight through” cable is required to interface to a computer. Cables may be easily fabricated or may be obtained from a computer store. The following tables show the recommended cable configuration for connecting the Telos TWOx12 to 9 pin and 25 pin DTE (computer) serial ports.
Page 63: Ethernet Remote Control
TWOx12 to communicate directly to Telos Assistant Producer 2.0 clients running on your network. The TWOx12 need not be connected to a host computer running server software as required with older Telos Telephone Interface products (in fact Telserv is not required).
Page 64 TELOS TWOX12 USER’S MANUAL The 10Base-T connector has two integral LED indicators which can be helpful if problems are suspected. The green “Link” LED indicates the presence of a live physical connection to a working Ethernet hub (or other device). If the green indicator does not light you should check your network wiring.
Page 65: Getting Up & Going -System Configuration
The checklist on the next few pages is intended to help you collect the information you will need about your lines and enter it into the TWOx12. The first half should be completed with the relevant information about your lines, and the second half then followed to program the lines themselves.
Page 66: System Programming Checklist
TELOS TWOX12 USER’S MANUAL System Programming Checklist (Copy this checklist and use it to help organize your installation) Part I-Line Information For each interface slot (A, B, C, & D), there will be either an ISDN interface or a POTS (analog line) interface present (see sections 2.5.1, 2.5.3, &...
Page 67 TELOS TWOX12 USER’S MANUAL SLOT C ❏ ❏ POTS ISDN Telephone #/DN/MSN SPID (ISDN only-USA & Canada) ❏ ❏ (C Top1) (C Top1) (top) (top) ❏ ❏ (C Top2) (C Top2) (middle) (top) ❏ ❏ (C Bot1) (C Bot1) (bottom) (bottom) ❏...
Page 68 TELOS TWOX12 USER’S MANUAL ❏ Enter TCP/IP addresses if used. See section 7.3.3 ❏ Read up on Desktop Director Operation. See section 4. ❏ Set up hybrid audio options. See section 7.3.1 CHAPTER 3 GETTING UP & GOING – SYSTEM CONFIGURATION...
Page 69: Initial Installation
TWOx12, and the TWOx12’s outputs connected to faders on your console (mixing desk). The TWOx12 should be connected to the ISDN (or POTS) telephone circuits and have power and be turned on. The LCD screen should be on and you should see the default screen similar to the one illustrated below.
Page 70: Worldwide Isdn Setup (Outside Usa & Canada)
TELOS TWOX12 USER’S MANUAL Worldwide ISDN Setup (outside USA & Canada): (Users outside the USA & Canada Worldwide ISDN Setup ( Worldwide ISDN Setup ( Worldwide ISDN Setup ( should skip this section) • Press the TEL button You will see a screen which looks like the following:...
Page 71: Usa & Canada Isdn Setup
TELOS TWOX12 USER’S MANUAL • Scroll down to TopDN/MSN2 and repeat the previous step, entering the second MSN for the ISDN circuit in the top jack of slot A. If your line does not have MSNs you must enter a unique 3 digit number here. Push Select to confirm.
Page 72 You will be entering 2 SPIDs and 2 Directory Numbers (DNs) for EACH of your ISDN BRI circuits. In the menus that follow we use the following nomenclature for each slot in the TWOx12. Please take care to get the right SPID and DN in the correct entry field as ISDN requires this information to operate.
Page 73 TELOS TWOX12 USER’S MANUAL • Scroll down to SPID2 and repeat the previous step, entering the second SPID for the ISDN circuit in the bottom jack of slot A. Push Select to confirm. • Scroll down to BotDN/MSN1 and repeat the previous step, entering the first DN for the ISDN circuit in the bottom jack of slot A.
Page 74: Analog Phone Line Setup (If You Ordered An Isdn Twox12 See Section 3.3)
TELOS TWOX12 USER’S MANUAL Analog phone line setup (If you ordered an ISDN TWOx12 see section 3.3) You can identify that your TWOx12 is equipped with POTS (analog) telephone lines by examining the rear panel. If four interface cards with three RJ-11 style connectors each are present (in slots A, B, C, &...
Page 75 TELOS TWOX12 USER’S MANUAL IMPORTANT! Users in the USA & Canada should see READY status for each line whenever the system is idle. On certain ETS- 300 ISDN lines the lines may go from READY to DEACTIVATED after an idle period. This is no cause for alarm and you can proceed with the following steps.
Page 76: Levels, Levels, Levels
TELOS TWOX12 USER’S MANUAL Levels, Levels, Levels Ok, we assume that you just made a call to yourself in section 3.5, above (if not, please follow those steps now). Congratulations, you just have some tweaking to do and your basic installation & configuration will be complete! •...
Page 77: Time To Test It Out
Bring up hybrid 1 on the console. You should hear the audio from the phone line. • Look at the left meter on the TWOx12 and verify that this audio is not present on the “1” LED bargraph. If this audio is present here you are not feeding hybrid 1 a mix-minus and you must fix this problem before you proceed.
Page 78 Bring up hybrid 2 on the console. You will hear the audio from the phone line. • Look at the left meter on the TWOx12 and verify that this audio is not present on the “2” LED bargraph. If this audio is present here you are not feeding hybrid 2 a mix-minus and you must fix this problem before you proceed.
Page 79: What Now
TELOS TWOX12 USER’S MANUAL What now? Your basic installation is complete. Next you will want to look over other sections of this manual to familiarize yourself with the system and decide how to set up the following parameters: • Desktop Director Setup See section 4 •...
Page 80 TELOS TWOX12 USER’S MANUAL This page is intentionally left devoid of useful information, except, of course, this message! CHAPTER 3 GETTING UP & GOING – SYSTEM CONFIGURATION...
Page 81: Desktop Director™- General Operation
Desktop Director™- General operation General Description The Telos Desktop Director™ acts as a studio telephone while at the same time acts as a control surface for putting lines on either of the Telos TWOx12’s built-in hybrids. The Desktop Director™ has two modes of operation – Producer (Screener) mode and Talent mode.
Page 82 TELOS TWOX12 USER’S MANUAL Call is on hold Call is On-Air – Caller 1 Fader Call is On-Air – Caller 2 Fader Call is On-Air & Locked – Caller 1 Fader. Call is in locked mode and cannot be dropped or placed on hold. To unlock, push button to the left of this ICON.
Page 83: Buttons
TELOS TWOX12 USER’S MANUAL Call is on hold, has been screened, and is Next. Press Next button to put this line On-Air Busy All Mode. Press X Button to cancel Handset Mode. Call is on the handset Speakerphone Mode. Call is on the speakerphone...
Page 84: Line Control Buttons
TELOS TWOX12 USER’S MANUAL IMPORTANT! Since certain functions work differently in “Talent” versus “Producer” mode it is important that your staff understand that there are two modes, and how to switch between them. This is covered later in this section (see menu navigation) and again in sections 5 and 6.
Page 85: Telephone Mode Buttons
TELOS TWOX12 USER’S MANUAL In Talent mode this button will direct the call designated by the screener as NEXT to Caller 1 hybrid. If no call is currently designated NEXT the call which has been on Screened Hold the longest will be directed to the Caller 1 hybrid. If a screener is not used, the line which has been ringing longest will be selected instead.
Page 86: User Function Buttons And Leds
(user button) – This button controls an output on the parallel control port. This output will go low for the duration that the button is pressed. This output can control equipment external to the TWOx12 such as the “delay dump” input on an obscenity delay unit.
Page 87: Desktop Director Lcd Screen & Menu Navigation Buttons
TELOS TWOX12 USER’S MANUAL Desktop Director™ LCD Screen & Menu Navigation Buttons The LCD status is used for general status information and for configuring the Desktop Director™. Items can be selected and changed using the 6 buttons immediately below the LCD screen. The buttons in the row immediately below the LCD screen are “soft buttons”.
Page 88: Volume Menus
TELOS TWOX12 USER’S MANUAL • Press the soft key button below the word MODE. You should now see a screen that looks similar to the following. Configuration Menu Director Mode Contrast Backlight BACK HELP • Now press the 6once. The words Director Mode should be highlighted by a grey cursor bar and the black text will change to white.
Page 89 TELOS TWOX12 USER’S MANUAL Ringer Volume IIIIIIIIIIIIIIIIIIIIIII 6DOWN 5 UP BACK HELP SPEAKER Pressing 6 will decrease, while pressing 5 will increase the volume level for the item displayed. The change will take place immediately and confirmation is not required. Pressing the soft key button under the word BACK or the SELECT button will return you to the main screen.
Page 90 TELOS TWOX12 USER’S MANUAL This page intentionally left void of useful information, except for, of course, this message! CHAPTER 4 DESKTOP DIRECTOR – GENERAL OPERATION...
Page 91: Telos Desktop Director™ - Guide For Call Screeners
(Copy and distribute this information to your staff) General Description The Telos Desktop Director™ acts as a studio telephone or it acts as a control surface for putting lines on either of the Telos TWOx12’s built-in hybrids. The Desktop Director™ has two modes of operation – Producer (screener) mode and Talent mode.
Page 92 TELOS TWOX12 USER’S MANUAL Call is on hold Call is On-Air – Caller 1 Fader Call is On-Air – Caller 2 Fader Call is On-Air & Locked – Caller 1 Fader. Call is in locked mode and cannot be dropped or placed on hold.
Page 93 TELOS TWOX12 USER’S MANUAL Call is on hold, has been screened, and is Next. Busy All Mode. Press X Button to cancel Handset Mode. Call is on the handset Speakerphone Mode. Call is on the speakerphone Line is not operational...
Page 94: Buttons
TELOS TWOX12 USER’S MANUAL Buttons The functions of most of the buttons are self evident. Again, we have used easy to understand symbols wherever possible. A brief explanations of the buttons follows: IMPORTANT! Since certain functions work differently in “Talent” versus “Producer” (screener) mode it is important that you understand that there are two modes, and how to switch between them.
Page 95 TELOS TWOX12 USER’S MANUAL Hold & Drop (Hold) and (Drop) - You know what these do! In Producer mode the left hold button is normal hold while the right hold button places a caller on “screened hold”. For more details on how screened hold works see the section on the Next button, below.
Page 96: Telephone Mode Buttons
(user button) – Check with your chief engineer to determine what this button does. It can be used to control equipment external to the TWOx12 such as the “delay dump” input on an obscenity delay unit. (record control) – Again, check with your chief engineer to determine if this button is setup to control something.
Page 97: Menu Navigation
TELOS TWOX12 USER’S MANUAL Producer MODE HELP VOLUME The default Desktop Director LCD Screen IMPORTANT! Since certain functions work differently in “Talent” versus “Producer” mode it is important that you understand that there are two modes, and how to switch between them.
Page 98: Volume Menus
TELOS TWOX12 USER’S MANUAL • Now press the 6once. The words Director Mode should be highlighted by a grey cursor bar and the black text will change to white. • Now press the SELECT button • You will now see a screen that looks like: ENTER <= or =>...
Page 99 TELOS TWOX12 USER’S MANUAL Pressing 6 will decrease, while pressing 5 will increase the volume level for the item displayed. The change will take place immediately and confirmation is not required. Pressing the soft key button under the word BACK or the SELECT button will return you to the main screen.
Page 100 TELOS TWOX12 USER’S MANUAL This page has been intentionally left blank. If that makes you sad, you can enter some notes here! CHAPTER 5 PLEASE COPY THIS SECTION AND GIVE TO YOUR CALL SCREENERS DESKTOP DIRECTOR GUIDE FOR CALL SCREENERS...
Page 101: Telos Desktop Director™- Guide For Talent
(if not skip right ahead to section 6.2). In the older Telos phone systems there are either 2 rows (Telos Console) or 2 columns of buttons (Console mounted control surface). The top row (or left column) is usually referred to as “Caller 1”...
Page 102: Status Symbol™ Icons & What They Mean
TELOS TWOX12 USER’S MANUAL STATUS SYMBOL™ ICONS & WHAT THEY MEAN This line is on-hook ready for incoming or outgoing calls (Idle) This line is in use by another studio Line is ringing Call is on hold Call is On-Air – Caller 1 Fader Call is On-Air –...
Page 103 TELOS TWOX12 USER’S MANUAL Call is On-Air – Caller 1 Fader. Call is in locked mode and cannot be dropped or placed on hold. To unlock push button to the left of this ICON. Call is On-Air – Caller 2 Fader.
Page 104: Desktop Director™ Display Operation- Talent Mode
TELOS TWOX12 USER’S MANUAL Handset Mode. Call is on the handset Speakerphone Mode. Call is on the speakerphone Line is not operational DESKTOP DIRECTOR™ DISPLAY OPERATION- Talent Mode HOT TIP! The directions in this section assume you are in Talent Mode. The Desktop Director™...
Page 105: Volume Menus
TELOS TWOX12 USER’S MANUAL Talent MODE HELP VOLUME The default Desktop Director LCD Screen The LCD screen and menu navigation buttons are used to set volume settings and to select the “mode” for a particular Desktop Director™. In particular, you will need to be sure the director is in Talent mode so the buttons work as described in this section.
Page 106: Desktop Director™ Buttons
TELOS TWOX12 USER’S MANUAL Speaker Volume IIIIIIIIIIIIIIIIIIIIIII 6DOWN 5 UP BACK HELP HANDSET Handset Volume IIIIIIIIIIIIIIIIIIIIIII 6DOWN 5 UP BACK HELP RINGER Ringer Volume IIIIIIIIIIIIIIIIIIIIIII 6DOWN 5 UP BACK HELP SPEAKER Pressing 5 or6 will increase (5) or decrease (6) the volume level of the parameter displayed.
Page 107 TELOS TWOX12 USER’S MANUAL the caller on that line on-air on the corresponding fader on the console (mixing desk, board, etc). Pressing a Line button when that line is already on-air locks the caller. You can use this capability to prevent accidentally losing a guest. To unlock press that Line button a third time.
Page 108: Placing Callers On-Air - Single Caller
6.4.2 User Function Buttons – These buttons can be used for control of equipment external to the Telos phone system. For instance the ?#@! button may control your obscenity delay dump, etc.
Page 109: Placing Multiple Callers On-Air - Using Lock Mode
TELOS TWOX12 USER’S MANUAL IMPORTANT! You will, of course, need to turn on and bring up the appropriate input on your console (mixing desk). You will usually have two faders associated with the phone system, one for “Caller 1” (or “Phone 1”) and one for “Caller 2” (or “Phone 2”).
Page 110: Dropping Calls Off Air
TELOS TWOX12 USER’S MANUAL 6.4.5 DROPPING CALLS OFF AIR • Look at the Status Symbol™ icon for the line(s) in question and verify that that the LOCK symbol is not showing. If LOCK is showing press the Line button for this line to unlock it.
Page 111: Detailed Configuration & Reference
Status button to display these. If all is OK, you will see the Ready indication for each ISDN B channel. If you do not see “READY” as the ISDN Status first cycle power to the TWOx12 off and then back on. If you still do not seen READY on the ISDN Status screen review the information in sections 2.3, 2.4 and 3.1 and check both your ISDN settings and...
Page 112 TELOS TWOX12 USER’S MANUAL You should not turn the unit off if this LED is blinking. When this LED is flashing you may notice some sluggishness of the system. This is normal and only occurs in the rare instance where the system is storing user information.
Page 113: Level Metering
TELOS TWOX12 USER’S MANUAL Level Metering The Telos Two includes two LED dual level meters. As is customary with digital equipment these are peak reading meters with the topmost segment representing 0dBfs (digital 0). The following block diagram indicates where the metering takes place.
Page 114 The right meter displays either the Studio Out levels (Left and Right) from the TWOx12 to your console or the Hybrid Receive levels (Line 1 and Line 2) from the telephone network. Pressing the small button on the meter selects between Studio Out and Hybrid Receive.
Page 115: Status Displays
Pressing the Status button displays the various status screens. These status screens display information about the state of the Telos TWOx12 and various user settings, but do not allow you to make any changes. The 5 & 6 buttons cycle through the screens.
Page 116 TELOS TWOX12 USER’S MANUAL TWOx12 has accepted an incoming call and is waiting for Accepting Call the Telco switch to connect it. OR incoming POTS call is pending – system is ”off-hook” waiting for loop current. All signaling is complete - the voice channel is available for Connected use.
Page 117: Advanced: Setting The Twox12'S Configuration
TELOS TWOX12 USER’S MANUAL Advanced: Setting the TWOx12’s Configuration AUDIO STAT You use the various configuration settings to adjust audio levels, set the ISDN parameters, etc. The buttons located near the LCD display on the rack-mount chassis are used for this purpose. Note: the Desktop Directors each have menus which allows adjustment of the ringer and headset volume, LCD contrast, Producer vs Talent mode and other user settings.
Page 118: The Audio Menu
TELOS TWOX12 USER’S MANUAL 7.3.1 The Audio Menu This group consists of sixteen settings that control the audio levels, mixing, etc. Audio Settings Audio Settings Input Source Analog Input Gain +4DB Send Level [||||||+0 DB |||||||||||||||||] Send EQ Input Source The selection chooses either Analog or Digital (AES/EBU) as the source of Studio In audio to be sent to callers.
Page 119 TELOS TWOX12 USER’S MANUAL HOT TIP! When using particularly poor analog (POTS) lines the Send Level adjust can be used to improve caller audio by reducing the send- to- caller level. By reducing this level you can reduce leakage and improve the announcer audio quality.
Page 120 Nominal levels of the telephone network vary as much as 30dB from call to call. The Telos TWOx12 uses a dB-linear approach to AGC with a feed-forward topology. This provides a consistent sound regardless of the drive level. The smart compressor approach used normalizes levels while retaining the natural dynamics of the caller’s voice.
Page 121 AGC function, such as attack & release times, thresholds, and compression ratio. An important feature of the TWOx12’s AGC is the fact that it is cross coupled to other sections of the hybrid so that it can reliably distinguish between the real caller audio and residual hybrid leakage.
Page 122 (mixing desk). The most popular settings for this selection are Separate (where the TWOx12’s dual hybrids are completely independent) and Mix Wide (see page 113). Note that the Feed Thru audio path, shown on the following diagrams, is controlled independently of the routing option chosen.
Page 123 TELOS TWOX12 USER’S MANUAL • Separate Routing This option provides two fully independent hybrids, with the Left Studio Audio “connected” to Hybrid 1 and the Right Studio Audio to Hybrid 2. In this mode, the two callers cannot hear each other, except through your external mix-minus configuration.
Page 124 TELOS TWOX12 USER’S MANUAL • Mix Panned This option causes the to Studio Input channels to be mixed equally and the resulting monaural send mix sent to each caller. The caller audio, however, is not mixed equally to the studio outputs. Studio Out 1 has a higher level of line 1 caller audio than line 2 caller audio;...
Page 125 TELOS TWOX12 USER’S MANUAL • Mix Mono This routing option causes the two Studio Send Input channels to be mixed equally, and the resulting monaural send audio is sent to each of the two callers. The caller audio is mixed equally and output on each of the Studio Outputs.
Page 126 TELOS TWOX12 USER’S MANUAL • Mix Wide. As shown below, this audio routing option sends the same monaural audio to each caller as Mix Mono and Mix Panned. The difference is that the Left Studio Output consists of only hybrid 1 received audio and the Right Studio Output only hybrid 2 received audio.
Page 127 TWOx12 with these settings, each caller will hear both mics. Feed Thru 1 & Feed Thru 2 The Telos TWOx12 has a unique Feed Through mode which can be set to off or on for each hybrid section using these selections. This mode adds the Hybrid Send audio to the Studio Out audio and the resulting mix is fed to the Studio Out outputs.
Page 128: The Tel Menu
The usual setting is on, and should be used whenever open speakers are employed with microphones. This should only be defeated when the Telos TWOx12 is being used as a “telephone coupler” to send one-way audio down the phone line. Default is On.
Page 129 TELOS TWOX12 USER’S MANUAL Telco This item allows for the selection of the ISDN protocol standard and takes one of four values. You must set this to correspond to the ISDN circuits you are using. HOT TIP! The Telco setting applies to all of your ISDN circuits. If you are not using ISDN you can ignore this menu item.
Page 130 TELOS TWOX12 USER’S MANUAL ISDN TIP! More on Telco Protocols: Guessing the Telco setting in Canada & USA: • If you were given only a single phone number and no SPIDs try AT&T Cust • If you were given 2 SPIDs with the format: 01+7 digit phone #+0 try AT&T Cust •...
Page 131 TELOS TWOX12 USER’S MANUAL Audio Settings Slot-A ISDN ↵ Top SPID1 Top SPID2 TopDN/MSN1 You will need to enter the following information in the sub menu for each interface slot which has an ISDN interface. Top SPID1 When you are using Natl. I-1 or DMS-100 for your Telco mode, you must enter the correct Service Profile ID (SPID) numbers for the ISDN BRI circuit plugged into the top jack of this interface card here and below.
Page 132 MSN - Multiple Subscriber Number. Used only when you are using the ETS 300 Euro ISDN Telco mode and another ISDN device is sharing the line with the Telos TWO. MSN1 corresponds to the first B channel. This is simply one of your assigned telephone numbers.
Page 133 HOT TIP! Some versions of the Telos Zephyr and ZephyrExpress do not require that Directory Numbers be entered. This is not true for the Telos TWOx12. You must correctly enter these numbers for the system to work. Deep Tech Note! The actual physical B channels of the BRI line are assigned on a per call basis, with the first incoming call assigned to the first B channel.
Page 134: The System Menu
0.0.0.0 IP Addr This is the IP address for this TWOx12. As with any computer on an IP network the TWOx12 must have an IP address before it can be used over the network. Since this address must be unique so you’ll have to ask whomever manages your network to give you this number.
Page 135 This is an IP address or a valid alphanumeric internet domain. When the Remote Ctrl selection in the System menu is set to RS232+trust the system will allow telnet and FTP connections from this trusted domain (and Telos Technical Support) only.
Page 136 Commit Software FTPsite This is the site from which new software will be downloaded. Normally the default value should be used unless you are instructed to do otherwise by Telos technical support. Boot Bank The TWOx12 has two independent banks of flash memory for software storage. This menu selection determines which bank (and hence which software version) will be loaded at startup.
Page 137 TELOS TWOX12 USER’S MANUAL HOT TIP! If you get the error Cannot resolve host name the problem could be anything from your IP settings to your network cable. If the green LED on the 10Base- T connector is not lit then you are probably not connected to a working network hub.
Page 138 Adjusts the bit rate of the RS-232 serial interface. It accepts values between 2400 baud to 38400 baud. 19200 bps is the default setting. Loop Mode This item allows the Telos Two to loop audio from various points in the system, primarily for testing purposes. Section 8.3 has more information on troubleshooting. •...
Page 139: Remote Control
“ok”. You should now see a Connection Description dialog box requesting that you name the setup and select an icon. Enter the desired name such as “Telos TWOx12 on com 2” and click on an icon (we like the electron symbol which is last). Now click on “ok”.
Page 140 Now click on “ok”. Next you will see a Com Properties Dialog box. Enter the following information: • Bits Per Second - set to match Serial Bitrate setting in the TWOx12’s System menu selection. • Data Bits - set to 8 •...
Page 141 TELOS TWOX12 USER’S MANUAL udInGain AudSendEQ AudAESsync AudOutGain AudDplx AudAGC AudReq AudReqLo AudReqHi AudNoise AudRoute AudFeed AudHybMix AudStudAdapt AudBurst NVclear NVdump FTPboo t FTPcommit FTPupdate FTPpath FTPsite IPdns IPgw IPmask IPaddr IPid IPset APinfo DDinfo LnMSN LnDN LnSPID LnTelco LnSet LnStudio LnStat...
Page 142 TELOS TWOX12 USER’S MANUAL Name..: R4 Parameter..: R4 <loc> Description: Read long from <loc> Name..: R2 Parameter..: R2 <loc> Description: Read word from <loc> Name..: R1 Parameter..: R1 <loc> Description: Read byte from <loc> !Name..: RW4 Parameter..: RW4 <loc> <valu>...
Page 143 TELOS TWOX12 USER’S MANUAL Parameter..: W1 <loc> <valu> Description: Write byte <valu> to <loc> Name..: DTMF Parameter..: DTMF <hybrid> <tone> Description: Generate <tone> on <hybrid> !Name..: DSPrw Parameter..: DSPrw <num> <loc> <addr> <valu> Description: Set <addr> offset in <loc> memory of DSP <num> to <valu> and read back.
Page 144 TELOS TWOX12 USER’S MANUAL Description: Display send EQ settings or turn [off (0)/on (1)] Name..: AudAESsync Parameter..: AudAESsync [I/E] Description: Set AES output synchronization to [Internal/External] Name..: AudOutGain Parameter..: AudOutGain [value] Description: Set Audio output gain to [value] Name..: AudDplx Parameter..: AudDplx [level]...
Page 145 TELOS TWOX12 USER’S MANUAL Name..: AudRoute Parameter..: AudRoute [value] Description: Display Routing or set to [value] Name..: AudFeed Parameter..: AudFeed [hybridnum] [val] Description: Display feed through settings or change FeedThru [num] to [val] Name..: AudHybMix Parameter..: AudHybMix [level] Description: Display Hybrid Mix or set to [level] Name..: AudStudAdapt...
Page 146 TELOS TWOX12 USER’S MANUAL Parameter..: FTPcommit Description: Commit new software to primary bank Name..: FTPupdate Parameter..: FTPupdate Description: Initiate remote software update Name..: FTPpath Parameter..: FTPpath [path] Description: Display or change FTP path Name..: FTPsite Parameter..: FTPsite [site] Description: Display or change FTP site Name..: IPdns...
Page 147 TELOS TWOX12 USER’S MANUAL Description: Display or set MAC Name..: IPset Parameter..: IPset Description: Display current TCP/IP settings Name..: APinfo Parameter..: APinfo Description: Display information on Assistant Producer connections Name..: DDinfo Parameter..: DDinfo [director] Description: Display information on all or a given director Name..: LnMSN...
Page 148 TELOS TWOX12 USER’S MANUAL Name..: LnStudio Parameter..: LnStudio Description: Display Studio Status Name..: LnStat Parameter..: LnStat Description: Display current line status by card Name..: LnState Parameter..: LnState Description: Display internal line states Name..: LnCIDset Parameter..: LnCDset [slot] [1/0] Description: Turn CID for [slot] [on/off] Name..: TaskInfo...
Page 149: Ethernet 10Base-T Control
7.4.1 for a list of commands available). Simply use your favorite FTP client to FTP to the IP address of the TWOx12 you wish to control. Or client software (such as our Assistant Producer 2.0 call screening system) can connect to IP Port socket 5001 (decimal).
Page 150: System Audio Processing And Feedback Control
A high pass filter with a 250 Hz crossover frequency improves hybrid performance and enhances intelligibility by removing unnecessary low-frequency information from the audio present at the TWOx12’s input. This function is not defeatable. Frequency Shifter The frequency shifter (pitch shifter) inserts a small, unnoticeable, shift in frequency to the send audio to prevent feedback buildup when the system is used with open speakers.
Page 151: Receive (Caller) Audio Processing
At moderate levels it is “AGC-like” while at high peak levels it is “limiter-like” in its effect. 7.5.2 Receive (Caller) Audio Processing The TWOx12’s Receive Audio Processing consists of the following functions: • High-pass “hum” filter •...
Page 152 An important additional feature of this AGC is that it is cross-coupled to other sections of the TWOx12 and can therefore reliably distinguish between caller audio and hybrid leakage. This allows a more aggressive gain control for bringing up low- level callers while still preserving excellent hybrid performance.
Page 153: Duplex "Ducking" System
8-12. 7.5.4 Feedback Control We’ve carefully designed the TWOx12 so that problems with feedback should be rare. However, despite excellent trans-hybrid loss and a number of other features, you can probably induce feedback if you try sufficiently hard (try cranking up your studio monitors).
Page 154 TELOS TWOX12 USER’S MANUAL The problem here is that the mic processing combines with the TWOx12’s internal AGC to increase gain in the feedback path. Depending on the mic processor used, the feedback margin can be reduced by many dB. The TWOx12’s internal AGC has a internal adaptive smart-gate function to...
Page 155: Technical Data And Troubleshooting
It is stored in a partition of the non-volatile memory on the motherboard. While there were a few changes to the firmware early on in the life of the TWOx12, the firmware is now stable and further changes are unlikely.
Page 156: Replacing Firmware
The TWOx12 must be programmed with the following information (see Section 7.3.3 for details): IP Addr This is the IP address for this TWOx12. As with any computer on an IP network the TWOx12 must have an IP address before it can be used over the network. Subnet This is your subnet mask.
Page 157: General Troubleshooting
4) Install the new SIMM module. • Locate the notch on the SIMM module to your right (towards the rear of the TWOx12). • At a 30 degree angle from vertical, insert the SIMM module into its socket. It should slide in with no resistance.
Page 158 "Everything You Know is Wrong". Use that as your guiding philosophy in troubleshooting a Telos Two set-up. For example, just because you checked the Telco line last night and it was fine does not mean that it's OK now.
Page 159: The Debug Status Screens
Green LED next to each U interface jack. Available line status messages are: No line connected, or connected to wrong jack on the TWOx12. OR, Deactivated ETS 300 permits the Telco to put a line to sleep. Deactivated will be displayed when this occurs.
Page 160: Using Loop Modes For Troubleshooting
First try disconnecting the ISDN circuit(s) in question and waiting a full 60 seconds (leave the TWOx12 on) and then reconnect the circuit(s). What kind of ISDN do you have, and is the TWOx12 set to match it? The telephone company should have given you the ISDN protocol when the line was ordered.
Page 161 This screen shows the status of the ISDN connection. You can determine if the line is connected and whether the line and the Telos TWOx12 are successfully configured. In addition, information about calls is displayed here. One of the following status words will be shown for each active ISDN channel: No line connected, or connected to wrong jack on the TWOx12.
Page 162 If the problem remains with the line, then call your Telco. On the other hand, if a line that works in one interface fails to work in another interface of the same TWOx12 then you have an problem with your ISDN interface card (or possibly elsewhere in the TWOx12).
Page 163 These are among the most difficult kinds of problems to solve. Rest assured, however, that we have yet to lose one! First try disconnecting the ISDN line and waiting a full 60 seconds (leave the TWOx12 on) and then reconnect the line.
Page 164: Troubleshooting Desktop Director Problems
An important tool is the TWOx12’s integrated ISDN analyzer. This enables you to look at the transactions between the Telco line and the TWOx12, so that a judgment can be made as to whether the problem lies within the TWOx12 or with the programming of the Telco switch.
Page 165 TELOS TWOX12 USER’S MANUAL Replaceable modules While we do not expect you to do much repair or troubleshooting of the individual circuit boards, the system does have several removable modules which can be systematically replaced or exchanged to aid in troubleshooting and repair. The system has the following...
Page 166: Isdn Cause Phrases/Values
ISDN logging through the serial port or Telnet port. These “Cause Values” are numbers generated by the network, which the TWOx12 translates to the associated phrases. When possible, we use those suggested by the Bellcore standard. Note that in some cases there may be more than one meaning.
Page 167 TELOS TWOX12 USER’S MANUAL Cause No. 6 – Channel unacceptable This cause indicates a called user cannot negotiate for a B-channel other than that specified in the SETUP message. Cause No. 7 – Call awarded and being delivered on an established channel This call indicates the user has been awarded the incoming calls, and that call is being connected to a channel already established to that user for similar calls (e.g.
Page 168 TELOS TWOX12 USER’S MANUAL Cause No. 19 - No answer (No answer from user, user alerted) This cause is used when the called user has provided an alerting indication, but not a connect indication within a prescribed period of time (before timer T301 has expired).
Page 169 TELOS TWOX12 USER’S MANUAL This cause indicates a facility requested cannot be provided by the network. This cause indicates that a user in a special business group (i.e. Centrex) dialed an undefined code. Cause No. 30 – Result of a STATus ENQuiry/Special intercept announcement: number...
Page 170 TELOS TWOX12 USER’S MANUAL This cause indicates that the switching equipment generating this cause is experiencing a period of high traffic. Cause No. 43 – Access/user information discarded This cause indicates that the network unable to deliver user information (i.e user-to-user information, low level compatibility or sub-address, etc) to the remote users as requested.
Page 171 TELOS TWOX12 USER’S MANUAL Cause No. 54 – Incoming calls barred The user will not accept the call delivered in the SETUP message. Cause No. 57 – Bearer capability (Data/voice) not authorized. This cause indicates that the user has requested a bearer capability which is implemented by the equipment which generated this cause but the user is not authorized to use it.
Page 172 TELOS TWOX12 USER’S MANUAL CLASS 1.5 (Invalid message; e.g. parameter out of range) Cause No. 81 – Invalid call reference value This cause indicates that the equipment sending this cause has received a message with a call reference which is not currently in use on the user-network interface. This value only applies if the call reference values 1 or 2 octets long and is not the global call reference.
Page 173 TELOS TWOX12 USER’S MANUAL CLASS 1.6 (Protocol error; e.g. unknown message) Cause No. 96 – Mandatory Info missing This cause indicates that the equipment sending this cause has received a message which is missing an information element which must be present in the message before that message can be processed.
Page 174 TELOS TWOX12 USER’S MANUAL Cause No. 111 – Protocol Error, unspecified This cause is used to report a protocol error event only when no other cause in this class applies. Among other things, this cause may be displayed if you failed to dial a “9” or “8” for an outside line, if required.
Page 175: Specifications
Specifications General Interface for connecting ISDN BRI (S0) or POTS telephone lines to professional studio equipment. ISDN Connectivity (also available with POTS interfaces) Protocol Compatibility: • National ISDN-1 and 2 • DMS-100 “Custom Functional” • AT&T 5ESS “Custom Point-to-Point” • Euro ISDN conforming to the NET 3/ETS300 protocol.
Page 176 TELOS TWOX12 USER’S MANUAL Frequency Response (± .5dB, 50 to 20kHz; swept sine procedure) • Measured from analog Input to output with unit in loopback mode. Noise – Input (-93 dBFS, A weighted) • Measured analog in to AES out in loopback mode.
Page 177: Warranty And Application Caution
Product must be delivered, shipping prepaid, to: Telos Systems, 2101 Superior Avenue, Cleveland, Ohio 44114. Telos Systems at its option will either repair or replace the Product and such action shall be the full extent of Telos Systems’ obligation under this Warranty. After the Product is repaired or replaced, Telos Systems will return it to the party that sent the Product and Telos Systems will pay for the cost of shipping.
Page 178 TELOS TWOX12 USER’S MANUAL This page is intentionally left void of useful information, except for this message, of course. CHAPTER 6 SPECIFICATIONS...
Page 179: Appendices
SPIDs will be indicated by a line status of “Wait” on the ISDN status screen. Often the Telco will leave the last “00” or “01” off the end of your SPID when giving it to you. For the latest list check Telos Systems’ web page. Additional SPIDs can be found at INTEL’s SPID Page: http://support.intel.com/support/isdn/SPID_Tip.htm...
Page 180 TELOS TWOX12 USER’S MANUAL 01YYYZZZZ0 SBC- See Pac Bell, Ameritech, XXXYYYZZZZ0101 or Southwestern Bell XXXYYYZZZZ0001 SNET (Southern New England 01YYYZZZZ000 Telephone) XXXYYYZZZZ00 01YYYZZZZ00 01YYYZZZZ0 01YYYZZZZ000 XXXXYYYZZZZ XXXYYYZZZZ0101 SPID1 XXXYYYZZZZ00 Southwestern Bell SPID2 XXXYYYZZZZ01 XXXYYYZZZZ0101 SPID1 XXXYYYZZZZ0000 SPID2 XXXYYYZZZZ0001 XXXYYYZZZZ SPID1 XXXYYYZZZZ0000...
Page 181: Appendix 2 - Cable Guide
11.2 Appendix 2 – Cable Guide This appendix is intended to be a reference tool that covers various modular telephone-style connectors used in Telos products. IMPORTANT! Be very careful to label wiring used with RJ- style connectors. In some cases they have power on them, and there is a risk of applying this power to something which does not expect it.
Page 182 TELOS TWOX12 USER’S MANUAL COLOR White/Green Green White/Orange Blue White/Blue Orange White/Brown Brown TIA-568A color codes. Cat 5 cable Is used and both ends are Identical. The color conductor of each pair may or may not have a white stripe. The other half of the pair may be either white or white with a colored stripe.
Page 183: Call Director To 2X12 Cable Pinout
It throughout your facility. Desktop Director™ to TWOx12 Cable Pinout The Desktop Director interface is electrically very similar to the ISDN S interface “extended” configuration. Wiring practices and termination resistor rules for the S interface apply.
Page 184: Isdn S Interface Cable Pinout
TELOS TWOX12 USER’S MANUAL Crossover 10Base-T Ethernet Cable Pinout When connecting a 10Base-T device (such as a computer or the TWOx12) to a hub, a “straight through” cable is used. Note that this implies that the jacks on the hub are different than those on the computer, since the “output”...
Page 185 Ethernet 10Base- T. The wiring configuration is the same as TIA- 568A (TIA- 568B is electrically equivalent). Since the TWOx12 does not use or provide power the pair corresponding to pin 1&2 and 7&8 may be omitted, if desired.
Page 186 TELOS TWOX12 USER’S MANUAL ISDN U interface connector (USA & Canada only) FUNCTION Not Present Line (R) Line (T) Not Present Typical ISDN U interface cable. This is identical to a POTS telephone cord. Polarity should not matter. APPENDIX 2...
Page 187: Appendix 3 - Telephone Technology In The Digital Age Tutorial
USA, however the majority of these principles will apply anywhere. The TWOx12 is really a sophisticated “baby” telephone system. As such it is similar an Electronic Key Telephone system designed for general business purposes. We will use the generic term “Key System” in the following Note: Words in bold are defined in the glossary.
Page 188 TELOS TWOX12 USER’S MANUAL hitting the diaphragm. A battery was used to provide a source of current (note that the original Bell technology was “talk powered”). This technology worked well as a transmitter, but was entirely inappropriate as a receiver. When coupled with one of the Bell transducers this transmitter worked better (higher levels and less distortion) than using two of the Bell devices.
Page 189 TELOS TWOX12 USER’S MANUAL Switching - Early manual exchanges As mentioned above, the early telephones lines were generally two or three phones wired in parallel. For instance (to use a dated example appropriate to those times), an affluent family might have a telephone from the home to the husband’s place of business.
Page 190 TELOS TWOX12 USER’S MANUAL The economics of telephony Central exchanges had a number of important advantages for the telephone companies: 1) Only one pair of wires were required to each subscriber’s premises. 2) Simplified plant requirements; The Telco could run extra cables from the central office to the vicinity of a growing area in advance.
Page 191 TELOS TWOX12 USER’S MANUAL Even should you purchase a dedicated line from your facility to a neighbor’s location, the Telco infrastructure will still mandate that the line go through the central office. Readers who have dealt with high fidelity conditioned audio loops...
Page 192 TELOS TWOX12 USER’S MANUAL The distinctive characteristics of a Key Telephone system are as follows: 1) Each line on the phone has a direct correspondence to actual lines from the Telco. In older key systems such as the 1A1 and 1A2 six conductors for each line go to each phone on which it appears! 2) A given line can, and often does, appear on more than one telephone set.
Page 193 TELOS TWOX12 USER’S MANUAL has an available trunk the user is connected it. The user then hears or “draws” dial tone from the Telco switch and can proceed to dial the number. Unlike a Key system, the user has no indication until after s/he picks up the phone and dials the special digit if a trunk is available.
Page 194 “announcer” audio. When Steve Church (our founder) designed the first adaptive DSP hybrid, the Telos 10, he designed it to work with the 1A2 Key systems that were ubiquitous at the time. It could also be easily adapted to direct connection to a single phone line or a home-built line switcher.
Page 195 TELOS TWOX12 USER’S MANUAL Digital trunking As businesses began to buy digital switches, the practice of bringing digital circuits to the user’s premises from the Telco became more practical. While very high volume users had sometimes used digital trunks in the past, often converting them to analog for use with analog PBXs or other equipment, the newer digital PBX’s could frequently support direct connections to these digital trunks.
Page 196 TELOS TWOX12 USER’S MANUAL 1) Does the provider merely resell the services of some other company? Do they own their own switching equipment? 2) Does the provider own trunking to your neighborhood, or will they be leasing carrier/copper/fiber from a ILEC? 3) What are the charges (per minute and/or per call) for local calls? It is likely these charges will be structured somewhat differently from your existing carrier.
Page 197 PBX to a 1A2 key system, or directly to one of the self contained Telos systems mentioned above. This approach generally works quite well. However, with the Telos TWOx12 digital version several new all-digital options are now available and offer superior performance.
Page 198 2 wire U interface while others offer the 4 wire S interface (USA & Canadian users note; if you require a TWOx12 with the S interface you will need to special order the version normally shipped only to outside the USA & Canada.
Page 199 TELOS TWOX12 USER’S MANUAL 3) Can station personnel readily change hunt group configurations? Add new stations? Is this level of self management included in the training package or is this extra? This is important not only as your station (or group) evolves, but as a tool to be used for special events or as part of your disaster recovery plans.
Page 200: Appendix 4 - Glossary Of Useful Isdn And Telephone Terminology
TELOS TWOX12 USER’S MANUAL 11.4 Appendix 4 - Glossary of useful ISDN and Telephone Terminology You’ll get better results from the Telco if you understand, and speak, the lingo! We have tried to include the typical acronyms used by telco personnel. We’ve put the definition under the most commonly used acronym.
Page 201 TELOS TWOX12 USER’S MANUAL BRI- ISDN Basic Rate Interface- The common form of ISDN with 2 “Bearer” Channels and one “D” channel. All three channels are on a single copper pair and encoded with type 2B1Q coding. BRITE- Basic Rate Interface Transmission Extension. A technology were ordinary T-1 trunks (or any other digital carrier system) are used to extend ISDN BRI service.
Page 202 TELOS TWOX12 USER’S MANUAL coded audio. Strictly speaking, a codec does not include an ISDN terminal adapter and related equipment. Combination Trunk- A trunk (channel) which can both make and receive calls. This generally refers to analog ground start or loop start trunks, although the term can be applied to ISDN BRI or PRI channels as well.
Page 203 TELOS TWOX12 USER’S MANUAL Dedicated Digital Service- a “Hardwired” or “Nailed Up” digital circuit which is permanently connected between 2 points. Typically 56Kbps or 64Kbps. Dedicated digital lines are frequently cheaper than ISDN for full time service. Also called Digital Data System.
Page 204 While this task is theoretically quite simple, the fact the impedance of most phone lines varies widely across frequency complicates matters. The Telos 10 telephone system was the first practical DSP based hybrid and applied the then brand-new technology to this problem, IEC - InterExchange Carrier.
Page 205 IOC Capability Packages - ISDN Ordering Code system. This system was devised by the National ISDN User’s Forum and Bellcore to simplify ordering new ISDN lines in the USA and Canada. Using a single code specifies all line specifications. The Telos Zephyr, ZephyrExpress, TWO, and TWOx12 support IOC package “S”. Search for document NIUF 428-94 at NIUF’s web page http://www.niuf.nist.gov/ for more...
Page 206 TELOS TWOX12 USER’S MANUAL latest round of de-regulation the usual IEC companies are being allowed to compete in the IntraLATA long distance market and LECs are beginning to be permitted to handle InterLATA calls. LDN- Listed Directory Number. When a number of Telco channels share the same hunt group it is customary to give out only one phone number for the group, although generally each channel will have its own number.
Page 207 Codes/Decodes from the line’s 2B1Q coding scheme. The customer end of the NT1 interfaces using the “S” or “T” interface. The NT1 is frequently part of the “Terminal Adapter” and is built-in to Zephyr, ZephyrExpress, Telos TWO and TWOx12 systems sold in the USA & Canada.
Page 208 NT1. The USA versions of the Zephyr, ZephyrExpress, and Telos TWO supply PS2 power in the “S” jack. This power arrangement is also used in the Telos TWOx12 and 2101 to power Desktop Directors. PTP- AT&T “Custom Point to Point” Custom ISDN Protocol. Point-to-Point lines have only one incoming phone number which must be dialed twice to connect to both lines.
Page 209 S interface- The electrical interface between the NT1 and the Terminal Adapter or other ISDN equipment. ISDN equipment with built-in NT1’s do not necessarily provide access to the S interface (the Zephyr, ZephyrExpress and Telos TWO do). Multiple devices can share an NT1 by connecting on the S interface. Also known as the S passive bus.
Page 210 EST, but you can try at other times. You may also ask for assistance by emailing to Support@telos-systems.com Telos Test Line(Zephyr & ZephyrExpress)- 24 Hour testline which can be called to verify correct operation of your Zephyr or ZephyrExpress codec. Numbers are +1 216- 781-9310 and +1 216-781-9311.
Page 211 TELOS TWOX12 USER’S MANUAL and can be received in L3 Mono using one B channel or L3 Stereo using 2 B channels. Telos also maintains an identically configured testline in Freising, Germany at 49 81 61 42 061 (dial this number twice).
Page 212 TELOS TWOX12 USER’S MANUAL This page has been intentionally left blank. APPENDIX 4 GLOSSARY OF TELEPHONE TERMINOLOGY...
Page 213: Appendix 5 - Suggested Reading
TELOS TWOX12 USER’S MANUAL 11.5 Appendix 5 - Suggested Reading ISDN ISDN – A Practical Guide to Getting Up and Running; William A. Flanagan; Flatiron Publishing, Telecom Books, New York, 1996; www.telecombooks.com ISDN for Dummies; David Angell; IDG Books, Foster City, CA; 1995 T-1 Networking (5th edition);...
Page 214: Appendix 6 - Isdn Bri Ordering Guide For Ets 300 (Euro-Isdn)
In order to communicate accurately what it is you need, we think you should be familiar with the vocabulary used to describe ISDN. As with anything, for best results, it helps to know what you are talking about. For an in-depth glossary of terminology please check Telos’ web site at http://www.telos-systems.com Names We’ve seen Basic Rate Interface ISDN called by a number of names.
Page 215 S interface may be on user equipment. If you plan on taking your TWOx12 to Canada or North America you will need to rent or purchase an external NT1 for use while in those countries. One rental source is Silver Lake. See their website at www.silverlakeaudio.com...
Page 216 ❏ Line deactivation is acceptable; Please provide your default setting for this parameter. You may call the manufacturer of the TWOx12, Telos Systems, at +1 (216) 241-7225 for any additional required information about ISDN compatibility. Ask for Telos TWOx12 Customer Support.
Page 217: Appendix 7 - Isdn Bri Ordering Guide For Usa & Canada
This guide takes you through the process step-by- step. Telos Technical Support is available to answer any further questions you may have. On one ISDN BRI circuit, there are three simultaneous bi-directional channels: two 64kbps “bearer”...
Page 218: Details, Details
Telecom DMS100, or Siemens EWSD switching equipment. While each will work with the TWOx12, there are some differences which need to be taken into account when lines are ordered and used. Each has a “protocol” – the language the user equipment and the telephone network use to converse (on the D channel) for setting up calls and the like.
Page 219 These numbers are given to the user by the phone company and must be entered correctly into the TWOx12 in order for the connection to function. SPIDs usually consist of the phone number plus a few prefix or suffix digits. There is frequent confusion between phone numbers and SPIDs, even among Telco personnel.
Page 220 TWOx12s shipped outside the USA & Canada have the S interface. In the USA & Canada the NT1 must be provided by the user, and is therefore built-in to the TWOx12’s ISDN terminal adapter. In this case the “U” (RJ-11) interface is provided.
Page 221 These should give the phone company all of the information they need. The majority of installations, if ordered in writing, with this information, go smoothly. If you do experience problems Telos technical support is here to help. You may also wish to look at our troubleshooting information in the TWOx12 manual.
Page 222 ❏ Please create a hunt group with all Directory Numbers except (Specify) _________________________ ❏ No Hunt groups You may call the manufacturer of the TWOx12, Telos Systems, at +1 (216) 241-7225 for any additional required information about ISDN compatibility. Ask for Telos TWOx12 Customer Support.
Page 223 TELOS TWOX12 USER’S MANUAL PROTOCOL: National ISDN-1 From AT&T 5ESS, Northern Telecom DMS100, and Siemens EWSD. If you use IOC Capability Packages, please use Capability Package ‘S’ unless otherwise specified. CO Values Line Type: National ISDN-1 Bearer Service: CSD/CSV on both channels (CSV is required; CSD may be omitted if requested by...
Page 224 (Prohibit REX on BRI lines per line) Give us: 1) One Directory Number PROTOCOL: AT&T Point-to-Multipoint (Custom) Not supported by the Telos TWO. Please provide National ISDN or AT&T Point-to-Point (Custom) APPENDIX 7 ISDN BRI ORDERING GUIDE FOR USA & CANADA...
Page 225 TELOS TWOX12 USER’S MANUAL Manual History 0.9 RKT 01/2000 1.0 RKT 02/2000 1.0.1 RKT 05/2000 APPENDIX 7 ISDN BRI ORDERING GUIDE FOR USA & CANADA...

Telos TWOx12 User Manual

1 Introduction

2 Installation

3 Getting up & Going -System Configuration

4 Desktop Director™- General Operation

5 Telos Desktop Director™ - Guide for Call Screeners

6 Telos Desktop Director™- Guide for Talent

7 Detailed Configuration & Reference

8 Technical Data and Troubleshooting

9 Specifications

10 Warranty and Application Caution

11 Appendices

Appendix 1 - Known Working SPID Formats by Telephone Company

Appendix 2 - Cable Guide

Appendix 3 - Telephone Technology in the Digital Age Tutorial

Appendix 4 - Glossary of Useful ISDN and Telephone Terminology

Appendix 5 - Suggested Reading

Appendix 6 - ISDN BRI Ordering Guide for ETS 300 (Euro-ISDN)

Appendix 7 - ISDN BRI Ordering Guide for USA & Canada

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Telos TWOx12

Summary of Contents for Telos TWOx12

Table of Contents