1. Manuals
  2. Brands
  3. Teltone Manuals
  4. Switch
  5. T-311
  6. Product manual

Teltone T-311 Product Manual

Telephone access unit
Hide thumbs
Table of Contents

Advertisement

Quick Links

Telephone Access Unit
T-311
Product Manual
40-400-00045, Rev. B

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the T-311 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Teltone T-311

Summary of Contents for Teltone T-311

  • Page 1 Telephone Access Unit T-311 Product Manual 40-400-00045, Rev. B...
  • Page 2 Note This manual covers Models T-311-B-01 and T-311-C-01. Copyright Notice Copyright © 1992 - 2004 Teltone Corporation All Rights Reserved Trademarks Teltone is a registered trademark of Teltone Corporation. Windows is a registered trademark of Microsoft Corporation. Other company and product names may be trademarks or registered trademarks of their respective owners.

  • Page 3: Table Of Contents

    Figure 1 T-311 Telephone Access Unit ....... . . 2...
  • Page 4 Table 11 T-311 ASCII Character Set ....... . . 52...
  • Page 5 If the REN is exceeded, then your phone may not ring properly. NOTE: Items C and D above are found on the label on any Teltone equipment connected to your telephone line. 2. These devices must not be installed on coin-operated telephone lines or party lines.

  • Page 6: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS When using this product, basic safety precautions, including the following, should always be followed to reduce the risk of fire, electric shock, and injury to persons. 1. Read and understand all instructions. 2. Follow all warnings and instructions marked on the product. 3.

  • Page 7: Recording Of Two-Way Telephone Conversations

    The distinctive recording tone can be provided as part of (1) the recording equipment, or (2) registered or grandfathered protective circuitry. Note: Recorder tone is not supplied by the T-311. 40-400-00045, Rev. B Contents...
  • Page 8 T-311 This page intentionally left blank. Page vi...

  • Page 9: Chapter 1: Introduction

    The information in this manual addresses T-311-B-01 units produced after October 3, 1994 . The pro- duction date is stamped on the bottom of each T-311 unit. All information related to Caller ID and Visual Message Waiting are features of the T-311-B-01 ONLY. The T-311-C-01 replaces the T-311-A-01 and is functionally the same.

  • Page 10: Figure 1 T-311 Telephone Access Unit

    T-311 Figure 1 T-311 Telephone Access Unit Page 2...

  • Page 11: Telephone Line Control Features

    Message Waiting Indication signals are sent during on-hook idle times. These FSK messages are de- coded and sent out via RS232C along with a visual indication on the front panel of the T-311, to inform the user of messages waiting in their mailbox.

  • Page 12: Outgoing Call Features

    T-311 Telephone Interface A telephone connected to the T-311 can be used two ways: (1) as an auxiliary telephone sharing the line with the T-311 (outgoing calls are dialed from the telephone set directly over the telephone and do not go through the T-311 circuitry), or (2) operating through the T-311 (outgoing calls are dialed from the computer).

  • Page 13: Applications

    Reference Manual Modular Connectors For ease of installation and to promote the widest possible range of applications, all T-311 connectors are standard and modular. Nonvolatile Memory The T-311 uses EEPROM memory to store configuration data. Applications The T-311 is a device marketed and intended for use in commercial, industrial, and business environ- ments.
  • Page 14 T-311 Incoming Calls In this type of application, the caller uses the T-311 to update or verify information in a remote com- puter database. Examples include: (1) Message forwarding systems (2) Financial transaction systems (3) Alarm systems (4) Energy management systems (5) Credit card verification systems (6) Mail order systems.

  • Page 15: Chapter 2: Operating Modes

    Active Mode The T-311 enters the active mode when the line is seized. The T-311 returns to the ready mode if: dial tone is not found when making a call, a no-answer is detected, or the caller fails the security check.

  • Page 16: Chapter 3: Installation

    Accessories As shown in Figure 3, the T-311 must be connected to a telephone line, a computer, and a standard 120-volt AC outlet to a power transformer. Connections to an auxiliary telephone, headset, and audio source are optional. Accessories required to make these connections include: (1) A plug-in transformer (Included with unit, P/N 610-00066-01.)

  • Page 17: Figure 3 System Connections

    Reference Manual Chapter 4: Dialing Instructions Figure 3 System Connections 40-400-00045, Rev. B Page 9...

  • Page 18: Table 2 T-311 Rs-232-C Interface

    Plug the transformer end into a 120-volt AC power outlet. Watch for the green POWER LED on the T-311 front panel to light. The red LED will also turn on if either (1) the computer is on, or (2) the T-311 is configured to ignore DTR (“&D” command, see Chapter 8).

  • Page 19: Figure 4 Remote Connector Cable And Pin Functions

    Use the three screws to install the bracket to a 3/4-inch-thick wood panel that is attached to a wall. If you are installing multiple units, insert the first T-311 in the slot closest to the wall. (The bottom of each unit should face the wall.)

  • Page 20: Figure 5 Universal Mounting Bracket (Optional)

    T-311 Figure 5 Universal Mounting Bracket (Optional) Figure 6 Universal Mounting Shelf (Optional) Page 12...

  • Page 21: Chapter 4: Dialing Instructions

    The T-311 allows calls to be placed by the computer operator or by software controlling the computer. If a W is embedded in the dialed number string, the T-311 monitors the line for dial tone (both primary and secondary), dials the digits in the specified manner (tone or pulse), and performs whatever oper- ations are enabled by the X command.
  • Page 22 TUV = 8 WXYZ = 9 For example, the command attend “teltone”<CR> will send the digits 8358663. The entire string, including ATD and both quotation marks, can be up to 40 characters. If more char- acters are to be sent, multiple D commands must be issued.

  • Page 23: Chapter 5: Answering Calls

    Telephone Rings The T-311 is enabled to detect ringing voltage when the line is not seized by either the T-311 or a tele- phone sharing the line with the T-311. As each burst of ringing voltage is detected, the T-311 transmits...

  • Page 24: Security Checking

    The T-311 will always issue the connection tone when the password requirement is enabled (*C=1) or if Bit 3 of the S*2 register is set to 1. In this situation, if a second T-311 is the caller, that T-311 will detect the connection tone and issue the message “T-311 CONNECT” (when V is set to V3) to its computer port.

  • Page 25: Chapter 6: Calling The T-311

    Dial the telephone number to which the T-311 is connected. Although a pulse-dialing telephone may be used to call the T-311, a DTMF telephone (or a DTMF generator used with a pulse-dialing telephone) must be used to enter the password (if required) and communicate with the computer after the connection through the T-311 is established.
  • Page 26 (0 seconds = OFF = Default), the unit will disconnect. To program this timeout period, see S10 on page 34. Cut-off On Disconnect will occur if the T-311 detects an open circuit for at least 800 ms. This feature is always enabled.

  • Page 27: Chapter 7: Record & Play Back Messages

    4 below.) Step 3: Delayed Recording Start: Place a call through the T-311 by issuing a “D” command at the computer or through an applica- tion program (see Chapter 8 for more information on commands). Start the recording at any time after the connection is established by issuing the command AT*R1<CR>.
  • Page 28 “Play” command through the T-311 (Step 4). Step 3: Place Call Place a call through the T-311 by issuing a “D” command at the computer or through an applica- tion program. (Or, on an incoming call, proceed to Step 4.)

  • Page 29: Chapter 8: Commands

    For compatibility with existing communications software, the T-311 uses many of the Hayes AT commands. Some have been modi- fied for use in the T-311 and new commands added to control T-311 features not available in a modem.

  • Page 30: Table 4 Command Set (Sheet 1 Of 2)

    T-311 Commands flagged with ¶ and all commands preceded by * are unique to the T-311. M commands (flagged with ¶¶ function differently than the AT M commands Command Function A or A0 Answer ringing line or take line off hold...

  • Page 31: Table 4 Command Set (Sheet 2 Of 2)

    Reset the T-311 RS-232C port to default values &D or &D0 T-311 ignores DTR, DTR LED is always on &D2 T-311 hangs up line when it detects on-to-off transition on DTR, LED follows DTR state. &F Fetch the default configuration and load it into RAM &W...

  • Page 32: Command Descriptions

    40 characters. Where multiple commands are issued in a single string, the T-311 will execute all commands as it re- ceives them until it receives an invalid command. An error response is returned when an invalid command is received.
  • Page 33 This command instructs the T-311 to wait for 5 seconds of silence before continuing. If no 5 second si- lent period is detected within the time value set in register S7, the T-311 hangs up and returns a NO ANSWER message. If 5 seconds of silence is detected, the remaining characters in the dial string are processed.
  • Page 34 This command puts the line on hold Note: When Bit 7 of Register S*2 is set to 1, the T-311 will ignore an H0 and hang up when it receives an H3. This configuration is used when the T-311 is controlled by drivers written for a ®...
  • Page 35 Q (message display on/off) and V (verbose mode) com- mands. Note: The T-311 M command serves a different function than the Hayes AT M command, which operates the modem speaker. M or M0 No messages No call progress messages are displayed.

  • Page 36: Verbose Mode

    Codes 0, 2, 4, 7 This command enables response codes 0, 2, 4, and 7 (OK, RING, ERROR, BUSY, and REORDER). The T-311 dials without waiting for dial tone and returns a a BUSY message if a busy signal is de- tected.

  • Page 37: Detector Toggles

    This command enables response codes 0, 2, 4, 6, and 7 (OK, RING, ERROR, NO DIAL TONE, and BUSY). The T-311 waits for dial tone before dialing and returns a NO DIALTONE message if dial tone is not detected within 5 seconds, and a BUSY message if a busy signal is detected.
  • Page 38 &D1 Not recognized by the T-311. &D2 Hang up on transition of DTR This commands the T-311 to hang up the line when it detects an on-to-off transition on the DTR line. LED follows DTR state. &F Fetch default configuration This command reads the default configuration stored in EPROM into RAM, making it the active con- figuration.

  • Page 39: S Registers

    This command turns both remote control switch and audio input ON (to play back to the network) Set Password This command sets the password for incoming calls to the T-311. A telephone cannot be used to set the password; it must be set through the computer. The password may be any 3 to 15 character com- bination of 0 - 9, *, and A - D, and must be terminated by #, <CR>.

  • Page 40: Table 5 S Register Summary

    Baud rate Receiver status Telephone line status Head/handset status Auto Answer This command holds the number of rings after which the T-311 automatically answers an incoming call. A value of 0 disables the automatic answer function. Valid range: 0-255 Units:...
  • Page 41 Default: 2 Call Completion Timeout This command sets the amount of time that the T-311 will wait after dialing for a network response (other than dial tone) before it disconnects and returns a NO ANSWER message. A value of 0 dis- ables this function.
  • Page 42 T-311 Pause for Comma in Dial String This command contains the number of the seconds the T-311 pauses when it receives a comma in a dial sequence. Multiple commas can also be entered in the dial string for longer delays.
  • Page 43 To change to pulse dialing, enter the command ATS14=235, or simply dial ATDPn...n<CR>. Ringback Tones Before Disconnect This register holds the number of ringbacks the T-311 is to detect before it disconnects the line and returns a NO ANSWER message.
  • Page 44 T-311 BIT 2 — BIT 3 No Connection Tone On Answer (default) BIT 3 Connection Tone On Answer BIT 4 Dtr Recognized As Always On BIT 4 System Hangs Up On On-to-off Transition Of Dtr BIT 5 Security Checking Off...
  • Page 45 To change, for example to toggle SIT off, enter ATX7<CR>, giving a query response of 215. Line Status (read only) This register displays the current status of the T-311 telephone line. See the appendix for information on reading the contents of this register.

  • Page 46: Chapter 9: Messages

    T-311 response messages are listed in Table 6. The T-311 will return either a limited set of messages based on the standard AT message set or a complete set of T-311 messages. The latter supports capabilities in the T-311, such as extended call progress monitoring and security checking, that are not present in modems.
  • Page 47 Line 1 selected Line not available — No activity Flash Flash failure Phone off-hook Phone on-hook 40-400-00045, Rev. B Table 6 T-311 Response Messages X Commands Description Enabled X2,X4,X5 No dial tone found Ringback count exceeded — Encountered unknown event...

  • Page 48: Chapter 10: Configuration

    When a Caller ID/Visual Message Waiting ( CID/VMW) message has been received and decoded by the T-311-B-01 it will immediately be transmitted to the serial port if the following conditions are true: 1. The CID/VMW outputs are enabled via the ATXF command (default = enabled). 2. The verbosity level is set to three (default = ATV3).

  • Page 49: Saving A Configuration

    AT Sxx? <CR> where xx is the register number. The T-311 will return a decimal number between 0 and 255. In the case of bit-mapped registers (S13, S14, S*2, S*5, S*6, and S*7) the number represents the sum of up to 8 binary conditions. See Appen- dix C for an explanation.

  • Page 50: Table 7 Configuration Options

    All detectors enabled S3=13 ASCII 13 S11=70 S4=10 ASCII 10 Messages are displayed until answer (with line testing) Enabled T-311 word result codes are returned S13=8 8-bit data word, parity off No password entered Disabled S6=2 2 seconds Command/ Format...

  • Page 51: Table 9 Default Configuration (By Code)

    Use the indicated AT command to change the parameter. RS-232-C Communications Link The T-311 is linked to the computer via a DB-9 (9-pin) EIA RS-232-C asynchronous serial interface. In the T-311 implementation of this interface, four signals are used to exchange data with the computer:...

  • Page 52: Table 10 Dtmf/Ascii/Dtmf Translation

    1 start bit, 7 data bits, “Mark”, 1 start bit, 7 data bits, “Space”, TX Input. The T-311 receives data from the computer via the TX input. Any character which does not fall into one of the following data types is also ignored:...
  • Page 53 Reference Manual Input DTMF Signal (to T-311) — — — — 40-400-00045, Rev. B Table 10 DTMF/ASCII/DTMF Translation ASCII Character Code Chapter 10: Configuration Output DTMF Signal (from T-311) Page 45...

  • Page 54: Appendix A: Service Information

    12 VAC Power Transformer (spare) Warranty Teltone warrants this product to be free from defects in material and workmanship for a period of two years, given proper installation and usage. At its sole discretion, Teltone will repair or replace free of charge any unit found to be defective during the warranty period.

  • Page 55: Troubleshooting

    LED’s on the front panel to assist in troubleshooting. Contact Teltone for help, if needed. • Return your T-311 to Teltone for repair as instructed in the next section. Return Procedures If a unit is found to be defective, contact Teltone customer service to obtain a RMA (Return Material Authorization) number and shipping instructions.

  • Page 56: Appendix B: Specifications

    T-311 Appendix B: Specifications This chapter provides technical specifications for the T-311, a block diagram, and information on read- ing and writing to bit-mapped S registers. Return loss (complies with VG2 of TR-NPL-000335, Iss. 1, June 1986) Echo return loss ()
  • Page 57 Reference Manual Transmitter: Maximum output level Frequency tolerance Dialing delay Digit signal length Interdigit time Maximum twist Receiver: Response range (level) Minimum response (time, all signals) Must not respond (time) Minimum digit separation Maximum digit interruption (hit) time Maximum twist (high tone to low tone) Frequency tolerance Confirmation tones: Connection tone...

  • Page 58: Figure 7 T-311 Block Diagram

    T-311 Figure 7 T-311 Block Diagram Page 50...

  • Page 59: Appendix C: Reading And Writing To Bit-Mapped S Registers

    0 or ignored). If parity were set to on (Bit 2 = 1 =(4)), even parity (Bit 3 = 1 = (8)), the T-311 would respond with 12, the sum of bits 2 and 3 (.e., 4 + 8).

  • Page 60: Appendix D: Ascii Characters & Dtmf Frequencies

    T-311 Appendix D: ASCII Characters & DTMF Frequencies Code Code “ Ctrl C & ‘ Ctrl H Ctrl J Ctrl M < > Page 52 Table 11 T-311 ASCII Character Set Code — Code...

  • Page 61: Table 12 Dtmf Frequencies

    Reference Manual Signal 40-400-00045, Rev. B Table 12 DTMF Frequencies Low frequency Index High frequency 1336 1209 1336 1477 1209 1336 1447 1209 1336 1447 1209 1447 1633 1633 1633 1633 Page 53...

  • Page 62: Appendix E: Glossary

    T-311 Appendix E: Glossary ASCII American Standard Code for Information Exchange. Coding method used by small computers to convert letters, numbers, punctuation marks, and other characters into digital form that can be recognized by computers. Call progress tones Tone information sent from the central office to tell the caller of the progress of a call; for example, ringback, busy, and reorder tones.

  • Page 63: Index

    Call progress ······················································4 Call Progress monitoring ...28 Call Progress tone tolerances...28 Call Progress Monitoring See X Commands Calling the T-311 communicate with PC ...17 hangup ...17 how to dial ...17 how to enter password ...17 COD ····························································18,36 detection of ...7 Commands·······················································22...
  • Page 64 Prompts acknowledgment tone ...17 connection tone...17 error tone ...17 Prompts audible...17 Pulse dialing·······················································4 Recording connecting the T-311...19 See Also FCC regulations from the line ...19 immediate start ...19 playing back to the line...19 stop ...19 Two-way conversations ...v Reorder Tone tolerances...28...

  • Page 65: Verbose Mode

    Reference Manual V Commands ··············································28,38 Verbose Mode See V Commands 40-400-00045, Rev. B Warranty···························································46 X Commands ···················································28 Index Page 57...

This manual is also suitable for:

T-311-b-01T-311-c-01

Table of Contents