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Related Manuals for Teltone ILS-B
Summary of Contents for Teltone ILS-B
- Page 1 ISDN Demonstrator ILS-B User’s Manual 40-400-00011, Rev. B...
- Page 2 Copyright © 1996 - 2003 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.
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Page 3: Table Of Contents
Introduction...1 Unpacking ...1 Chapter 1: Quick Start ...2 ISDN Demonstrator Operation ...5 What To Read Next ...6 Chapter 2: ISDN-BRI ...7 Technology Overview...7 Layer 1 - Physical Operation ...7 U Reference Point...7 Network Termination-1 (NT-1)...8 S/T Reference Point...8 Terminal Adapters ...8 Layer 2 - Data Link Operation...8 Packet Addressing ...8 TEI Assignment ...9... - Page 4 Reference Documents ...30 Warranty and Service...32 Warranty Information ...32 Return Procedures...32 Technical Assistance...32 Maintenance...32 Cleaning...32 Servicing ...32 Specifications...33 Glossary ...34 40-400-00011, Rev. B...
- Page 5 List of Figures Figure 1. Configuration Software ...12 Figure 2. U Interface Operation ...23 Figure 3. Dimensions and Panels...24 Figure 4. Call Control Message Exchange Example ...26 40-400-00011, Rev. B...
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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: Regulatory Compliance
REGULATORY COMPLIANCE FCC Part 15 Class A Notice: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. -
Page 9: Introduction
2B+D, that is, two full duplex Bearer channels and one full duplex Delta channel combined onto a single pair of wire. The Teltone ISDN Demonstrator is two ISDN BRI connections in a portable housing. The user interface is “U” connection using an RJ45 modular plug. -
Page 10: Chapter 1: Quick Start
ISDN Demonstrator User’s Manual CHAPTER 1: QUICK START The ISDN Demonstrator is easier to operate than most communications devices designed for ISDN-BRI applications. It functions in the background, providing two lines of end-to-end ISDN-BRI service. Because the Simulator was designed primarily for people who demonstrate, functionally test, or configure ISDN-BRI devices, you do not need to understand ISDN protocols or read the entire User’s Manual to use it. - Page 11 Step 6 Step 7 NOTE: The instructions may specify that your communications device requires power from a secondary source, such as a wall adapter. Step 8 Step 9 Step 10 Next, you may be instructed to program one or more First device at Port 1: Second device at Port 1: First device at Port 2:...
- Page 12 ISDN Demonstrator User’s Manual Second device at Port 2: NOTE: Not all communications devices are programmed with a SPID or DN. Some devices need an additional number called a Terminal Endpoint Identifier (TEI). If you must assign a TEI, use a different number (between 1 and 63) for each device you connect to the Simulator.
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Page 13: Isdn Demonstrator Operation
ISDN Demonstrator User’s Manual ISDN Demonstrator Operation When the STATUS LED is a solid green, you can use your communications devices or computer applications as if connected to the telephone company’s ISDN-BRI service. In general, your ISDN-BRI device will operate the same as conventional telephone equipment, with the obvious exceptions that call processing occurs more rapidly and that voice, high-speed data, and packet mode data may be sent and received simultaneously. -
Page 14: What To Read Next
ISDN Demonstrator User’s Manual a video conferencing application, cannot connect to another device on the same line. Another limitation occurs when attempting to place a call to a device that does not support the requested call type. For example, a call placed from an ISDN data terminal to an ISDN voice telephone will be rejected by the telephone. -
Page 15: Chapter 2: Isdn-Bri
CHAPTER 2: ISDN-BRI Technology Overview The Integrated Services Digital Network - Basic Rate Interface (ISDN-BRI) is a technology that gives individuals affordable access to the world’s largest digital network using the copper wire currently entering their home or office. With ISDN-BRI, users may connect almost any form of personal communications device to a single phone line and establish multiple, simultaneous voice and data connections at speeds up to 128 thousand bits per second. -
Page 16: Network Termination-1 (Nt-1)
ISDN Demonstrator User’s Manual cancellation, and an Embedded Operations Channel (EOC) for testing and monitoring. Network Termination-1 (NT-1) The U Interface terminates at a device called a Network Termination-1, or NT-1. This device converts the U Interface to an S/T Interface. It also permits loop back and testing by the telephone company and a means of routing local power to devices previously designed to receive power from the line, such as a telephone. -
Page 17: Tei Assignment
three logical links or destinations within a device. SAPI 0 addresses Call Control functions, and SAPI 16 addresses the Packet Handling Function (PHF) associated with X.25 LAP-B user data. SAPI 63 addresses the Signaling Access Controller (SAC), which negotiates and assigns the second packet address number, called a Terminal Endpoint Identifier or TEI. -
Page 18: Service Profile Id (Spid) Assignment
ISDN Demonstrator User’s Manual 5. Call Control is extensible, however, and the number of Messages and Information Elements continues to increase. Multiple versions of ISDN Call Control currently exist. Two common ISDN switches use proprietary Call Control: Northern Telecom’s DMS-100 series and AT&T’s 5E series. -
Page 19: Chapter 3: Provisioning And Operation
CHAPTER 3: PROVISIONING AND OPERATION The instructions for many ISDN-BRI communications devices may specify Provisioning required of the telephone company. Provisioning is a means of configuring the ISDN switch so it knows what kind and how many calls communications devices can support, up to the limits imposed by ISDN-BRI technology. -
Page 20: Figure 1. Configuration Software
ISDN Demonstrator User’s Manual installation until complete. A Program Window will be created that is labeled ISDN Demonstrator Configuration and includes an icon labeled ISDN Demonstrator Configuration. Double click on this icon to start the software (see Figure 1) and provision the ISDN Demonstrator. The ISDN Demonstrator Configuration software will attempt to query the ISDN Demonstrator via COM1, the default communications port. -
Page 21: General Operation
General Operation Provisioning of features using the ISDN Demonstrator configuration software allow the user to select from several stored configurations, as well as allow the user to store other configurations as needed. If a stored configuration is selected, and any feature is changed, the Configuration Name changes to (Untitled). -
Page 22: D Channel X.25
ISDN Demonstrator User’s Manual Important: When the Simulator configuration is changed, always reinitialize any connected devices. All devices must be compatible with the selected switch protocol. D Channel X.25 Packet Handling Function (PHF) ISDN-BRI permits the use of the 16Kbs D Channel, usually reserved for ISDN signaling, to exchange X.25 LAP-B user data with a host system. -
Page 23: B Channel Provisioning
STEP 3 STEP 4 STEP 5 Note: Some terminals require that you send an X.25 RESET command manually before the terminal will establish a PVC connection. B Channel Provisioning Some ISDN-BRI communications devices, usually LAN gateways and other Terminal Adapters, do not use ISDN Call Control to establish calls or allocate B Channels. -
Page 24: Terminal Display Text
ISDN Demonstrator User’s Manual The ISDN switch knows each user’s identity because a SPID or Directory Number is always associated with a specific line and user name. When a user places a call, the switch accesses its database to retrieve the calling number and includes it in the SETUP message sent to the called party. -
Page 25: Electronic Key Telephone Service (Ekts)
When set to ON, the Simulator sends formatted display text to every device, which includes the Call Appearance, Called (or Calling) Party Name, and Directory Number. When the Simulator is configured for National ISDN-1, this text is sent in a Display Text Information Element following a Locking Shift 5 (National Codeset) Information Element. -
Page 26: Multi-Point
ISDN Demonstrator User’s Manual STEP 5 Note: EKTS is not available when Multi-Point is disabled. Multi-Point When the Simulator is configured for multi-point operation, each line can initialize and support more than one device, using multiple SPID’s. However, some devices will not operate on multi-point lines. To change this setting, STEP 1 STEP 2 STEP 3... -
Page 27: Key Hold
STEP 1 STEP 2 STEP 3 STEP 4 STEP 5 Note: This setting is not available when EKTS is disabled. Note: A maximum of 4 calls may be on hold with one connected. When one or more Call Appearances are enabled, the Calling Party Information Element is not included in incoming SETUP messages. -
Page 28: Additional Call Offering (Aco)
ISDN Demonstrator User’s Manual STEP 5 Note: This setting is not available when EKTS is disabled. While the Simulator recognizes the CONFerence and TRANSfer call control messages, it does not perform these services at this time. The ISDN Demonstrator returns a reject message, as if the service was not subscribed. -
Page 29: Chapter 4: Demonstrator Operation
ISDN Demonstrator User’s Manual CHAPTER 4: DEMONSTRATOR OPERATION This section refers to the operation of the ISDN Demonstrator in more detail. Many users of the Simulator will not need to read this section. When power is first applied to the Simulator, a self-test is performed and the interfaces are initialized. -
Page 30: Restart
ISDN Demonstrator User’s Manual with most terminals attempting to do the same, and operation resumes normally. However, some terminals are designed to report link failures to their Call Control Layer, which may then attempt to recover. If their recovery procedure is not satisfied before various timers expire, they may clear (or dump) any active calls. -
Page 31: Chapter 5: Reference
CHAPTER 5: REFERENCE Status Indications Figure 2 shows the ISDN Demonstrator configured for U Interface operation. Connecting to the U Interface allows synchronization of any communications devices connected downstream. The Simulator’s U interface status is signaled by the U-SYNC LED which changes from a blinking green LED to a solid green LED after synchronization has competed. -
Page 32: Dimensions And Panels
ISDN Demonstrator User’s Manual Dimensions and Panels Figure 3 shows the unit’s front and rear panels. Supported Call Control Messages The Simulator supports the ISDN-BRI Call Control messages listed below. For specification documents that describe the function of each message, see the end of this section. - Page 33 ISDN Demonstrator User’s Manual CONFerence (AT&T)* CONFerence REJect (AT&T) CONNect CONNect ACKnowledge DISConnect DROP (AT&T) DROP ACKnowledge (AT&T) DROP REJect (AT&T) HOLD (NI-1/NTI) HOLD (AT&T) HOLD ACKnowledge (NI-1/NTI) HOLD ACKnowledge (AT&T) HOLD REJect (NI-1/NTI) HOLD REJect (AT&T) INFOrmation MANagement INFOrmation (AT&T) NETwork ESCape NOTIFY (NI-1/NTI) PROGress...
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Page 34: Typical Call Control Sequence
ISDN Demonstrator User’s Manual Typical Call Control Sequence Figure 4 illustrates a common method for depicting a Call Control (Layer 3) message exchange, end-to-end, for setting up and releasing a successful call. The near-end or originating caller is shown on the left, while the far-end or terminating caller is on the right. -
Page 35: Troubleshooting
Connected from the "EXT CLOCK OUT" of another Teltone ISDN Simulator for bonding b Channels. Connect to the "EXT CLOCK IN" of another Teltone ISDN Simulator for bonding B channels. Ensure that the device is connected to the U interface and is 2B1Q encoded. -
Page 36: Tei Assignment
ISDN Demonstrator User’s Manual Problem: How do I loopback the U interface? Solution: TEI Assignment Problem: The TE cannot initialize TEI Solution: Solution: Solution: Solution: Solution: Problem: The TE indicates that TEIs are periodically Solution: Solution: Solution: Call Control Problem: Caller ID doesn’t work. Solution: Solution: Solution:... - Page 37 Problem: TE indicates an error when attempt is Solution: Solution: Solution: Solution: Solution: Solution: Solution: Problem: Calls are routed to the same DN when a Solution: Solution: Solution: Problem: Every call indicates no channel available or Solution: Solution: Solution: Solution: Solution: 40-400-00011, Rev.
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Page 38: Configuration
ISDN Demonstrator User’s Manual Configuration Problem: How do I select Bearer Capability or call Solution: Problem: TE continues to reinitialize (in some cases Solution: Solution: Solution: Problem: Cannot place X.25 call by dialing a Solution: Problem: Electronic key telephone drops calls when Solution: Reference Documents The following specification documents, among others, have been used for... - Page 39 ISDN Demonstrator User’s Manual National ISDN Generic Guidelines for ISDN Terminal Equipment on Basic Rate Interface, Bellcore SR-NWT-002661 ISDN D-Channel Exchange Access Signaling and Switching Requirements (Layer 2), Bellcore TR-TSY-000793 ISDN Access Call Control Switching and Signaling Requirements (Layer 3), Bellcore TR-TSY-000268 ISDN Features-Common Switching and Signaling Generic Requirements, Bellcore TR-TSY-000847...
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Page 40: Warranty And Service
Teltone warrants this product to be free of defects in workmanship and materials for a period of 1 year. 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. When returning units, provide the following information: •... -
Page 41: Specifications
SPECIFICATIONS AC Power Input Input Voltage Frequency Current Connector Output to power external devices U Interface Protocol Maximum cable drop Power Source 2 Maximum power source voltage per ANSI T1.605 is 56.5 VDC Minimum power source voltage per ANSI T1.605 is 32.0 VDC Maximum of 6 Watts available power for external devices. -
Page 42: Glossary
ISDN Demonstrator User’s Manual GLOSSARY 5ESS Medium-to-Large digital end office switch (Class 5). Manufactured by AT&T and introduced in 1981. First AT&T switch to offer Basic Interface ISDN (with the software load 5E4.2) in the 1980’s. AMI (Alternate Mark Inversion) A Layer 1 line-code scheme used in T1 carrier and ISDN PRI. - Page 43 ISDN Demonstrator User’s Manual Asynchronous Transmission Data is sent character by character. The receiver and transmitter are synchronized for each individual character via a start and stop pulse. Asynchronous transmission is normally found on dial up circuits, usually at speeds between 300 and 19,2000 bps. B Channel A 64 Kb/s (DS0) ISDN user-to-network channel.
- Page 44 ISDN Demonstrator User’s Manual CCITT (Consultative Committee on International Telephone & Telegraph) Comite Consultatif International Telegraphe et Telephone (French for “International Telephone and Telegraph Consultative Committee”). Formerly, an international standards body charted by the United Nations. Now called ITU-T (International Telecommunication Union-Telecommunication sector.) Centrex Service created by software in the telephone company’s local office which simulates...
- Page 45 ISDN Demonstrator User’s Manual ETSI (European Telecommunications Standards Institute) European Telecommunications Standards Institute. Formed in 1988 by the member administrations of CEPT to broaden European Standards participation to include manufacturers, research centers, private service providers, and user associations, as well as Post and Telecommunications Administrations. ETSI has more than 250 members.
- Page 46 ISDN Demonstrator User’s Manual ITU (Internal Telecommunications Union) The principal international standards organization chartered by the United Nations and supported by treaty agreements among member nations. The ITU is the parent organization for the ITU-T (Formerly CCITT) and the ITU-R (formerly CCIR). In addition, the ITU has two other permanent organs: the International Frequency Registration Board (IFRB), and General Secretariat;...
- Page 47 ISDN Demonstrator User’s Manual Loop Pair of wires connecting the subscriber to the Telephone Company central office. Modem (Modulator/Demodulator) A device which converts data signals into a form suitable for transmission over a communications medium and which recovers the data from the received communication link.
- Page 48 ISDN Demonstrator User’s Manual Packet A grouping of data, typically from 1 to 512 characters in size which usually represents one transaction. A packet is always associated with an address header and control information. The term “Packet” is usually used to refer to a Layer 3 data unit in X.25. PBX (Private Branch eXchange) A customer premises telephone switch connecting 20 or more station sets to each other to the public network and possibly to a private network.
- Page 49 ISDN Demonstrator User’s Manual SS7 (Signaling System Number 7) An international, standard, common channel signaling system. SS7 is used between public network switches (replacing per-trunk signaling), local exchange carrier switches, interexchange carrier switches, and (increasingly) between local and interexchange carrier networks. Switch Generic term for machines that switch telephone calls from/to telephones and/or trunks.
- Page 50 ISDN Demonstrator User’s Manual U Interface A two-wire interface required by the FCC (not the ITU-T) between the Local Exchange Carrier and the customer’s NT1. Specification completed during 1Q87 by ANSI T1D1.3. X.25 ITU-T recommendation specifying how user equipment (DTE) is to connect to a public, packet-switched network (DCE).