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ISU 128 128 kbps ISDN Ser vice Unit USER MANUAL Part Numbers 1202029L2 115 VAC 1202029L3 115 VAC with V.34 Modem Option 61202.029L2-1D January 1998.
Trademarks: DMS-100 is a trademark of Northern Telecom. ISU is trademark of ADTRAN, Incorporated. Macintosh is a registered trademark of Apple Computer, Incorporated. Stac is a registered trademark and LZS is a trademark of Stac Electronics. Windows is a registered trademark of Microsoft Corporation.
FCC regulations require that the following information be provided to the custom- er in this manual. 1. If your telephone equipment ( ISU 128) causes harm to the telephone network, the telephone company may discontinue your service temporarily. If possible, they will notify you in advance.
FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT FCC ID: HDC1202029TL This equipment has been tested and found to comply with the limits for a Class B dig- ital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential environment.
CANADIAN EMISSIONS REQUIREMENTS This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus," ICES-003 of the Department of Communications.
61202.029L2-1 ISU 128 User Manual i T able of Contents Chapter 1. Understanding ISDN and the ISU 128 ..................................................... 1 ISDN Overview ................................................................................
Table of Contents ii ISU-128 User Manual 61202.029L2-1 Near-End Block Errors/Far-End Block Errors (NEBE/FEBE) .............................. 22 Software Version ..........................................................................................
Table of Contents 61202.029L2-1 ISU 128 User Manual iii Leased Line Service ............................................................................................................ 40 Clock Mode: Slave/Master ......................................
Table of Contents iv ISU-128 User Manual 61202.029L2-1 Dial PPP* ............................................................................................................... 62 V34 115.2 async* ......................................................
Table of Contents 61202.029L2-1 ISU 128 User Manual v Environmental ............................................................................................... 85 Physical ...........................................................................
Table of Contents vi ISU-128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual vii List of Figures Figure 1-1: ISU 128 Rear Panel ................................................................................ 2 Figure 1-2: ISU 128 Front Panel ...................................................
List of Figures viii ISU 128 User Manual 61202.029L2-1 Figure 10-1: Remote Configuration Menu Path ...................................................... 72 Figure 10-2: Remote Configuration Screen .....................................................
61202.029L2-1 ISU 128 User Manual xi List of T ables Table 1-A: DTE Indicators ....................................................................................... 3 Table 1-B: Recommended Operating Modes ...........................................
List of Tables xii ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 1 Chapter 1 Understanding ISDN and the ISU 128 ISDN OVERVIEW The Integrated Services Digital Network (ISDN) is a public or private switched digital network.
Chapter 1. Understanding ISDN and the ISU 128 2 ISU 128 User Manual 61202.029L2-1 over ISDN. The ISU 128 may be viewed as an ISDN dial modem that allows cost-effective high-speed data transmission at rates up to 128 kbps. The ISU 128 has one RJ-45 jack available on the rear panel for network connec- tion (see Figure 1-1).
Chapter 1. Understanding ISDN and the ISU 128 61202.029L2-1 ISU 128 User Manual 3 • With DTR asserted, some bridges/routers raise DTR when bandwidth on their dedicated line is exceeded. In high-traffic times, this allows the ISU 128 to dial out over the ISDN for an extra 128 kbps of bandwidth-on-de- mand.
Chapter 1. Understanding ISDN and the ISU 128 4 ISU 128 User Manual 61202.029L2-1 ISU 128 INTEROPERABILITY Telephone networks are evolving from analog technologies to digital technol- ogies such as ISDN. This transition is time-consuming and costly for the tele- phone companies.
Chapter 1. Understanding ISDN and the ISU 128 61202.029L2-1 ISU 128 User Manual 5 ENTER 123 456 789 #0 * RS CS TD RD LD TR SR ISU CANCEL ENTER 123 456 789 #0 * RS CS TD RD LD TR SR DSU CANCEL ENTER 12.
Chapter 1. Understanding ISDN and the ISU 128 6 ISU 128 User Manual 61202.029L2-1 RECOMMENDED OPERATING PROTOCOLS The ISU 128 supports a wide range of operating modes. Many combinations of circuit type, protocol, and data rate may be selected. However, only the combinations shown in Table 1-B are recommended.
Chapter 1. Understanding ISDN and the ISU 128 61202.029L2-1 ISU 128 User Manual 7 Table 1-B Recommended Operating Modes 1. All asynchronous rates support flow control. 2. All dial-up modes support front panel, DTR, RS-366, AT command, and V.25 bis dialing methods.
Chapter 1. Understanding ISDN and the ISU 128 8 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 9 Chapter 2 ISDN Ordering Codes (IOCs) ORDERING ISDN USING IOCS The development of ISDN ordering codes (IOCs) simplifies the process of or- dering ISDN service.
Chapter 2. ISDN Ordering Codes (IOCs) 10 ISU 128 User Manual 61202.029L2-1 ADTRAN has registered the following ISDN ordering codes to support a va- riety of tariffs and applications: Capability S • .
61202.029L2-1 ISU 128 User Manual 11 Chapter 3 Installation After unpacking the unit, immediately inspect it for possible shipping dam- age. If damage is discovered, file a claim immediately with the shipping car- rier, then contact ADTRAN Repair and Return Department (see the end of this manual).
Chapter 3. Installation 12 ISU 128 User Manual 61202.029L2-1 DTE DATA CONNECTION Data terminal equipment is connected to the ISU 128 by using either the RS- 530 interface, the V.35 interface, or EIA-232 interface on the rear panel of the ISU 128. The maximum recommended cable lengths are shown in Table 3-A.
Chapter 3. Installation 61202.029L2-1 ISU 128 User Manual 13 MAINTENANCE INTERFACE The Maintenance Interface is available at 9600 bps, 8 data bits, no parity, asyn- chronous format, through the RS-366/Maintenance port. See the appendix Connector Pinouts for Maintenance port pin assignments.
Chapter 3. Installation 14 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 15 Chapter 4 Operation MENU NAVIGATION Four function keys on the left-hand side of the keypad allow the user to enter, exit, and scroll through the various menu branches. The four function keys are defined below. Enter Enters the selected item.
Chapter 4. Operation 16 ISU 128 User Manual 61202.029L2-1 GETTING STARTED At power up, the front panel display is in the Current Status mode. This is the recommended resting place for the display as it shows the current operational status of the unit.
Chapter 4. Operation 61202.029L2-1 ISU 128 User Manual 17 VT 100 TERMINAL MENU SUPPORT When connected to an asynchronous VT 100 terminal or VT 100 terminal em- ulator, use the built-in ISU 128 menu system for configuration. To enter into the menus, type AT!V Enter .
Chapter 4. Operation 18 ISU 128 User Manual 61202.029L2-1 Configuration Screen Once the unit is selected using the terminal interface, the display shows the Configuration Menu (see Figure 4-2). This screen shows the current configura- tion, line, and call status for the selected unit.
61202.029L2-1 ISU 128 User Manual 19 Chapter 5 Testing TEST OPTIONS Pressing Ctl-T from any VT 100 terminal screen or selecting 2=TEST from the top of the menu tree on the front panel displays local testing options. Figure 5-1 shows the VT 100 terminal test screen and the menu tree is illustrated in Figure 5-2.
Chapter 5. Testing 20 ISU 128 User Manual 61202.029L2-1 Figure 5-2 Test Menu Tree Loopback DTE Loopback DTE causes the ISU DTE port to loop back toward user equipment. This allows performance of a bit error rate test (BERT) between the ISU 128 and the end user equipment to verify proper cable connection.
Chapter 5. Testing 61202.029L2-1 ISU 128 User Manual 21 Loopback Remote Loopback Remote allows the ISU 128 to issue a V.54 in-band loopback com- mand to a far-end unit while still accepting data from the DTE connector. This provides bit error rate testing of an entire link using an external BERT test set.
Chapter 5. Testing 22 ISU 128 User Manual 61202.029L2-1 DDS+V54 Accept The ISU 128 responds to both DSU Latching Loopback commands (leased line mode only) and V.54 loopback commands. The ISU must be optioned for Clear Channel operation for DSU Latching and V.
61202.029L2-1 ISU 128 User Manual 23 Chapter 6 Configuration DIAL LINE OPERATION This section explains how to configure the ISU 128 when using ISDN basic rate switched service.
Chapter 6. Configuration 24 ISU 128 User Manual 61202.029L2-1 Figure 6-2 VT 100 Configuration Screen Switch Protocol Find out what kind of ISDN switch your local CO is using by asking the tele- phone administrator or telephone company representative.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 25 less than data service. A Speech call type does not guarantee an end-to-end digital connection with some local and long distance carriers. Audio Audio directs the call control software to request a 3.
Chapter 6. Configuration 26 ISU 128 User Manual 61202.029L2-1 When selecting a SPID, use the Up and Down arrows to choose between SPID 1 and SPID 2. Press Enter to select the SPID and use the keypad to enter the SPID number. While entering/editing a SPID, the Down arrow allows ou to backspace through the number string to correct mistakes.
Chapter 6: Configuration 1 ISU 128 User Manual 27 Configur 2=DTE options 1=Netw. options 1=Asynchronous 2=Synchronous G 3=Protocol 1=Clear Channel 2=BONDING mode 1 3=V.120 4=V.34 5=V.110 6=DSU 57.6 ASYNC 7=T-LINK 8=SAP . 9=FALLBACK 1=Fallback Def 0=PPP asyn-sync 4=Quick setup S ‘Buffer Display’ 1=Loopback DTE 2=Loopback Netw.
Chapter 6: Configuration 28 ISU 128 User Manual.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 29 Dial options The ISU 128 can be configured to dial using the Front Panel, RS-366 port, AT Commands, or V.25 bis Commands. Figure 6-4 illustrates the menu tree. Front Panel To establish and disconnect calls from the front panel keypad, configure Dial options for Front Panel .
Chapter 6. Configuration 30 ISU 128 User Manual 61202.029L2-1 1 sec or EON The ISU 128 assumes the dial string is fully entered if more than one second elapses since the last digit was entered, or the unit receives the EON com- mand.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 31 To exit the data mode and enter the command mode, the asynchronous DTE device must transmit a proper escape sequence to the ISU 128. A specified time delay must occur between the last data character and the first escape se- quence character.
Chapter 6. Configuration 32 ISU 128 User Manual 61202.029L2-1 Reading S-Registers Type ATS followed by the number of the S-register to be read followed by a question mark and press Enter. ATS0? Reading S-Register Strings The ISU 128 uses S-register strings to store strings of digits for stored phone numbers, SPIDs, etc.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 33 V.25 bis Configuring the ISU 128 for V.25 bis (see Figure 6-5) enables in-band dialing over a DTE interface using asynchronous or synchronous V.25 bis commands. V.25 bis can be used to establish and end a call.
Chapter 6. Configuration 34 ISU 128 User Manual 61202.029L2-1 When using stored numbers, V.25 bis accesses stored numbers 1 through 9 used by front panel dialing. See Front Panel Dialing Options. Auto Answer should be set to Disabled (shown in Figure 6-6) if V.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 35 The setting in Figure 6-8 allows for V.25 bis messages in asynchronous (start/ stop) data format. Figure 6-8 V.25 bis ASYNC Menu Tree Although V.25 bis allows asynchronous data format, asynchronous DTE is more likely to support the AT command set than V.
Chapter 6. Configuration 36 ISU 128 User Manual 61202.029L2-1 Auto Answer The ISU 128 auto answer parameter can be configured in one of three ways: Disabled, Enabled, or Dump all calls. Disabled When Disabled is selected, the ISU 128 will not automatically answer an in- coming call.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 37 Answer Tone The Answer tone option (shown in Figure 6-9) enables the transmission of a modem answer tone at the start of voice and audio calls. The purpose of this tone is to disable echo suppression and echo cancelling on the circuit in order to get a clear digital circuit.
Chapter 6. Configuration 38 ISU 128 User Manual 61202.029L2-1 Connect Timeout Connect Timout sets the length of time that the ISU 128 waits for a far-end unit to answer an outgoing call.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 39 The ISU 128 displays the Call ID for all dumped calls in the Status buffer. See the section Status Buffer for more information on the Status buffer.
Chapter 6. Configuration 40 ISU 128 User Manual 61202.029L2-1 LEASED LINE SERVICE This section explains how to configure the ISU 128 when using a 2B1Q leased digital service or a service that provides a permanent connection between end points. Figure 6-12 illustrates the menu tree for setting leased line.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 41 If two ISU 128 units are connected through channel banks, both units should be configured for Slave mode (see Figure 6-14). To easily configure ISU 128s for this application, one unit can be optioned using Quick Setup, Ldm 128 Master and the other using Quick Setup, Leased 128k sync.
Chapter 6. Configuration 42 ISU 128 User Manual 61202.029L2-1 DTE OPTIONS The following procedure configures the DTE options for asynchronous and synchronous applications. Figure 6-15 and Figure 6-16 illustrate the menu trees for both asynchronous and synchronous operation.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 43 Connector Type The ISU 128 can provide an EIA-232, RS-530, or V.35 interface to a DTE by se- lecting the desired connector type. RTS Options Selecting 1 MS delay causes the Clear-to-Send (CTS) signal to change states 1 millisecond after the DTE Ready-to-Send (RTS) signal changes state.
Chapter 6. Configuration 44 ISU 128 User Manual 61202.029L2-1 DTR signal is in the active state. The unit attempts to establish a call using SN0 until the call is established or DTR goes inactive. Selecting Answer if On only allows the unit to answer an incoming call if the DTR signal is asserted.
Chapter 6. Configuration 61202.029L2-1 ISU 128 User Manual 45 Data Format (Asynchronous) A frame consists of a start bit, 7 or 8 data bits, 0 or 1 parity bit, and 1 to 2 stop bits. The settings for Data Bits , Parity Bits , and Stop Bits are available as shown in Figure 6-18.
Chapter 6. Configuration 46 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 47 Chapter 7 Protocol Options PROTOCOL OPTIONS The ISU 128 communicates with many different types of telecommunication equipment including other ISU 128s, ISDN terminal adapters, Switched 56 DSUs, BONDING-compatible inverse multiplexers, and V.
Chapter 7. Protocol Options 48 ISU 128 User Manual 61202.029L2-1 Figure 7-1 Protocol Menu Tree See the section Recommended Operating Protocols and Table 1-B in Chapter 1 for more information on recommended modes of operation. The desired protocol may be selected with AT commands at the DTE port or from the ISU 128 front panel.
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 49 near- and far-end DCE need to be configured to use the BONDING mode 1 protocol. Also, if the second B channel number is different from the first B channel, it is important that the 7-digit LDN is programmed in the answering unit.
Chapter 7. Protocol Options 50 ISU 128 User Manual 61202.029L2-1 TXADD01 This option specifies the length of time both endpoints wait for the additional call to be connected at the end of negotiation before deciding the BONDING call has failed.
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 51 V.110 The V.110 protocol is a CCITT compliant rate adaption method which pro- vides DTE service between the ISU 128 and other V.110 compliant devices. V.110 supports synchronous and asynchronous DTE rates.
Chapter 7. Protocol Options 52 ISU 128 User Manual 61202.029L2-1 Compression No Compression turns off the MNP5 compression algorithms in the ISU 128. Compress MNP5 enables MNP5 data compression. Compress V42 enables V.42 bis data compression. Compress V42/MNP5 allows the 128 to negotiate MNP5 or V.
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 53 DSU 57.6 ASYNC The DSU 57.6 ASYNC or DSTOP protocol allows the ISU 128 to communicate asynchronously at 57.6 kbps with ADTRAN 2- and 4-wire Switched 56 DSU products. In addition, the ISU 128 will communicate with other ISUs over dial and leased connections using this protocol.
Chapter 7. Protocol Options 54 ISU 128 User Manual 61202.029L2-1 FALLBACK The FALLBACK asynchronous rate adaption protocol provides the capability to automatically establish calls with other ISDN terminal adapters, Switched 56 DSUs, V.34 modems (optional), as well as other ISUs using a single config- uration.
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 55 When originating calls to unknown units, the ISU begins protocol selection based on the local call type. Data 64k is used for FALLBACK selected from Quick Setup menu. Upon connection at 64k call type, BONDING, V.
Chapter 7. Protocol Options 56 ISU 128 User Manual 61202.029L2-1 Point-to-Point (PPP) Async-to-Sync PPP provides a standard method for transporting multi-protocol datagrams over point-to-point links.
Chapter 7. Protocol Options 61202.029L2-1 ISU 128 User Manual 57 The ISU 128 is configured for multilink PPP from the protocol options of the configuration menu by selecting 2=Multilink PPP or by setting S-register S27 to a value of 1. In this mode, the ISU 128 dials a second number to establish a second point-to-point link.
Chapter 7. Protocol Options 58 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 59 Chapter 8 Quick Setup QUICK SETUP CONFIGURATION To configure the DTE Options quickly and easily, the Quick Setup menu is available to automatically set up the most common DTE configurations (Fig- ure 8-1).
Chapter 8. Quick Setup 60 ISU 128 User Manual 61202.029L2-1 Quick Setup To assist in configuring the DTE options for the ISU 128, ten common config- urations are preset in Quick Setup . These include: • Synchronous dial operation for 56, 64, 112, and 128 kbps • Asynchronous dial operation for 57.
Chapter 8. Quick Setup 61202.029L2-1 ISU 128 User Manual 61 Dial 64K sync* When the ISU 128 is configured for Dial 64K sync service the following pa- rameters are automatically preset: Service type .....................................................
Chapter 8. Quick Setup 62 ISU 128 User Manual 61202.029L2-1 Dial 128K sync* When the ISU 128 is configured for Dial 128K sync service, the following pa- rameters are automatically preset: Service type ..................................................
Chapter 8. Quick Setup 61202.029L2-1 ISU 128 User Manual 63 V34 115.2 async* When the ISU 128 is configured for V34 115.2 async service, the following pa- rameters are automatically preset: Service type ................................................
Chapter 8. Quick Setup 64 ISU 128 User Manual 61202.029L2-1 Dial 115.2 asyn* When the ISU 128 is configured for Dial 115.2 asyn service, the following pa- rameters are automatically preset: Service type ................................................
Chapter 8. Quick Setup 61202.029L2-1 ISU 128 User Manual 65 More More takes the user into the following level of choices: Leased 128K When the ISU 128 is configured for Leased 128K service the following param- eters are automatically preset: Service type .
Chapter 8. Quick Setup 66 ISU 128 User Manual 61202.029L2-1 Factory Setup This option restores the ISU 128 to the factory default setup : Service type ................................................................ISDN dial line ISDN switch protocol .
61202.029L2-1 ISU 128 User Manual 67 Chapter 9 Dial Options DIALING OPTIONS Selecting 4=DIAL or pressing the # (pound) key from the Current Status menu displays the front panel available dialing options. (See Figure 9-2.) Access the VT 100 terminal dial options screen (Figure 9-1) by pressing Ctl-D from any screen.
Chapter 9. Dial Options 68 ISU 128 User Manual 61202.029L2-1 Figure 9-2 Dial Menu Tree Hang Up Line Terminates current call. Dial Number Enter and dial a number from the keypad. If an error is made while entering a number, press the Down arrow to correct the mistake.
Chapter 9. Dial Options 61202.029L2-1 ISU 128 User Manual 69 Store/Review Number Enter and review stored numbers. Press the Up or Down arrow to scroll through the 10 stored numbers (SN0 - SN9). To store a number, scroll to the desired stored number location, enter the number to be stored, and press Enter to save the number.
Chapter 9. Dial Options 70 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 71 Chapter 10 Remote Configuration Remote Configuration Remote Configuration allows configuration and testing of a remote unit by calling the remote unit from a local unit. The remote unit can be configured using AT commands, the Front Panel, or the VT 100 terminal interface.
Chapter 10. Remote Configuration 72 ISU 128 User Manual 61202.029L2-1 Configuring and Testing with the Front Panel or VT 100 Terminal The menu path to follow to select remote configuration on the Front Panel is shown in Figure 10-1. Figure 10-1 Remote Configuration Menu Path When using the VT 100 terminal interface, select the main menu option Cfg.
Chapter 10. Remote Configuration 61202.029L2-1 ISU 128 User Manual 73 Configure Remote Unit This option allows configuration of a remote ISU 128. The Front Panel will dis- play a prompt for the remote number to dial. Enter a number and press Enter to continue.
Chapter 10. Remote Configuration 74 ISU 128 User Manual 61202.029L2-1 The Front Panel can only be used to configure other ISU devices with front panels. AT commands and the VT 100 terminal can be used to configure any ISU device that sup- ports remote configuration, such as the Express XR/XRT and the ISU 2x64 Rack- mount.
Chapter 10. Remote Configuration 61202.029L2-1 ISU 128 User Manual 75 connect. The screen from a VT 100 terminal is illustrated in Figure 10- 6. To set the password, choose Set Password from the Main Configuration Menu. Type the six digit (or less) password, then press Enter .
Chapter 10. Remote Configuration 76 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 77 Chapter 11 Troubleshooting When the ISU 128 powers up, it performs an internal self test. This takes about 10 seconds.
Chapter 11. Troubleshooting 78 ISU 128 User Manual 61202.029L2-1 2. Disconnect the ISU 128 from the ISDN line. From a functioning voice phone, call the local directory number(s) provided with your line. Calling a good ISDN line with nothing connected usually results in a ring or fast busy tone.
Chapter 11. Troubleshooting 61202.029L2-1 ISU 128 User Manual 79 G. With the ISU 128 connected to the ISDN line and powered up, talk to your service provider's repair group and inform them that your ISDN basic rate line has a physical layer 1 problem.
Chapter 11. Troubleshooting 80 ISU 128 User Manual 61202.029L2-1 5. If the ISU 128 continues to read Register SPID #1 , the ISU 128 is physically connected to the local telephone service provider and has established log- ical layer 2. The ISU 128 is unable to establish layer 3.
Chapter 11. Troubleshooting 61202.029L2-1 ISU 128 User Manual 81 B. Ensure that the ISU 128 is set up with the correct SPID and LDN by selecting CONFIG , Netw. options, Dial Line , Terminal ID , SPID/LDN . C. Try swapping SPID1 with SPID2 and LDN1 with LDN2.
Chapter 11. Troubleshooting 82 ISU 128 User Manual 61202.029L2-1 E. With the ISU 128 connected to the line and powered up, talk to your service provider's repair group and tell them you have an ISDN basic rate line that appears physically okay but has no terminal endpoint identifier (TEI).
61202.029L2-1 ISU 128 User Manual 83 Chapter 12 Specifications SPECIFICATIONS AND FEATURES This section describes the standard specifications and features incorporated in the ISU 128. Network Interface • RJ-45 for ISDN Basic Rate U-Interface, and Leased 2B1Q service DTE Interface • RS-530 • V.
Chapter 12. Specifications 84 ISU 128 User Manual 61202.029L2-1 Rate Adaption • T-Link • CCITT V.120 • CCITT V.110 • SAP • DSU 57.6 Async • BONDING mode 1 • V.34 (optional) • PPP •M P Interoperability • BONDING Inverse Multiplexers • Switched 56 DSUs • ISDN TAs • V.
Chapter 12. Specifications 61202.029L2-1 ISU 128 User Manual 85 TR Data Terminal Ready from DTE. On when DTR is active at DTE interface. SR Data Set Ready. Environmental • Operating Temperature: 0 to 50 ° C • Storage Temperature: 20 to 70 ° C • Relative Humidity: Up to 95%, non-condensing Physical • Dimensions: 2.
Chapter 12. Specifications 86 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 87 Appendix A AT Commands This appendix lists the supported AT commands and describes their functions. Command Function A Answer. Puts the ISU 128 in answer mode. D Dial. Precedes the telephone access number [ATD5551212].
Appendix A. AT Commands 88 ISU 128 User Manual 61202.029L2-1 Command Function Carrier Detect (CD) Control Line Options &C0 CD forced On &C1 CD normal &C2 CD off with local disconnect (LOCD.
Appendix A. AT Commands 61202.029L2-1 ISU 128 User Manual 89 Command Function Clear-To-Send (CTS) Control Line Options &R0 Follows RTS &R1 Forced CTS Data Set Ready (DSR) Control Line Options .
Appendix A. AT Commands 90 ISU 128 User Manual 61202.029L2-1 Command Function AT Command Response Message Types V0 Numeric response messages V1 Verbal response messages words AT Command Connect Messag.
Appendix A. AT Commands 61202.029L2-1 ISU 128 User Manual 91 Command Function The following AT commands require that the optional V.34 modem board be installed: V.34 Compression Options %C0 No compression %C1 Use MNP compression %C2 Use V.42 bis compression %C3 Use V.
Appendix A. AT Commands 92 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 93 Appendix B Current Status Messages This appendix lists the status line messages and their definitions. Messages shown entirely in capital letters are generated by the ISDN network. Messages with lower case letters are generated by the ISU 128.
Appendix B. Current Status Messages 94 ISU 128 User Manual 61202.029L2-1 Link down The network interface is not active. LPBK DTE Port The DTE connector is looped back in the DTE direction.
Appendix B. Current Status Messages 61202.029L2-1 ISU 128 User Manual 95 xxxxx can be any of the following: BONDING Bandwidth on Demand Industry Users Group protocol. CLEAR CHAN No rate adaption protocol (allows use of maximum bandwidth). DSTOP DSU 57.
Appendix B. Current Status Messages 96 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 97 Appendix C Status Buffer Messages This appendix lists the status buffer message and their definitions. Messages shown entirely in capital letters are generated by the ISDN network. Messages with lower case letters are generated by the ISU 128.
Appendix C. Status Buffer Messages 98 ISU 128 User Manual 61202.029L2-1 BAD_INFO_ELEM Call control error. Bad phone number ISU 128 attempted to call an invalid phone number. Bad TLK Version Invalid TLINK parameters found during end-to-end negotiations.
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 99 Call not ringing User executed an answer command (ATA) but there was not a call present. CALL_REJECTED The call has been rejected by the ISDN Network. Can’t go on-line ISU 128 cannot go back on line.
Appendix C. Status Buffer Messages 100 ISU 128 User Manual 61202.029L2-1 DPUMP END RCVD Indication of a hang-up or disconnect occurring during BONDING. Does not indicate an error condition has occurred. DTE must be SYNC For the protocol chosen, the DTE connector must be optioned as synchronous.
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 101 FlowCtl required Bonding negotiation determined that flow control needs to be optioned on. Hangup 1/2 The call on either the first or second channel was disconnected by the ISU 128.
Appendix C. Status Buffer Messages 102 ISU 128 User Manual 61202.029L2-1 LDN TOO LONG The entered local directory number has too many digits. MANDATORY_IE_LEN_ERR Mandatory information element length error. MANDATORY_IE_MISSING Mandatory information element missing.
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 103 No Sreg value Attempt to change an S-register without specifying a value (example: ATS2= ). NO_ROUTE The phone network was unable to find a route to the destination number. NO_USER_RESPONDING The dialed number is not responding.
Appendix C. Status Buffer Messages 104 ISU 128 User Manual 61202.029L2-1 S cmd not = or ? User did not use proper syntax. SAP idle timeout Unit at far end is not configured to use the SAP protocol. SERVICE_NOT_AVAIL The service requested by the user is not available.
Appendix C. Status Buffer Messages 61202.029L2-1 ISU 128 User Manual 105 TXFA1 expired Bonding timer TXFA1 expired, other vendors BONDING equipment did not operate properly. TXFA2 expired Bonding timer TXFA1 expired, other vendors BONDING equipment did not operate properly.
Appendix C. Status Buffer Messages 106 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 107 Appendix D S-Register List S0 AUTO ANSWER Determines how the ISU 128 answers an incoming call. 0 = Disable (ISU 128 does not answer call). 1 = Enable (ISU 128 answers all calls). 2 = Dump all calls. S2 BREAK IN Determines which key or character (in ASCII code) CHARACTER defines the escape command.
Appendix D. S-Register List 108 ISU 128 User Manual 61202.029L2-1 S11 FALLBACK DEFAULT Determines how the ISU 128 answers an incoming call if all of the protocols in Fallback failed. 1 = Clear Channel 2 = BONDING Mode 1 3 = SAP 4 = T-link 5 = V.110 6 = V.
Appendix D. S-Register List 61202.029L2-1 ISU 128 User Manual 109 S27 PPP MODE Determines type of PPP connection. 0= Single-link operation (default) 1= Multilink operation 2= Use compression S30 DTE CTS Controls the operation of the DTE connector clear to send (CTS) line.
Appendix D. S-Register List 110 ISU 128 User Manual 61202.029L2-1 S36 ERROR Sets the type of error control to be negotiated with CORRECTION the far-end modem. 0 = Normal operation no error control. Allows speed matching, buffering, and flow control. 1 = Direct error control, no error control.
Appendix D. S-Register List 61202.029L2-1 ISU 128 User Manual 111 S42 BOND TXADD01 The number of seconds both endpoints wait for the additional call to be connected at the end of negotiation before deciding the BONDING call has failed. When dialing overseas, it may be necessary to lengthen this timer to allow for lower call routing.
Appendix D. S-Register List 112 ISU 128 User Manual 61202.029L2-1 S51 LINE CLOCK Selects the clock mode in leased mode. 0 = Slave (default) 1 = Master (Leased line only, limited distance MODEM application only). S52 SWITCH Selects the network switch type for dial service.
Appendix D. S-Register List 61202.029L2-1 ISU 128 User Manual 113 S57 DDS TEST Allows an ISU 128 optioned as a leased line unit to respond to DDS in-band latching loopback or V.54 loopback commands. 0 = No checking 1 = Check for DDS latching loopbacks 2 = Check for v.
Appendix D. S-Register List 114 ISU 128 User Manual 61202.029L2-1 S72 DATA BITS Selects the number of asynchronous data bits. 0 = 8 bits 1 = 7 bits S73 DTE PARITY Selects the number of asynchronous parity bits. 0 = None 1 = Odd 2 = Even S74 DTE STOP Selects the number of asynchronous stop bits.
61202.029L2-1 ISU 128 User Manual 115 Appendix E Connector Pinouts Figure E-1 EIA-232/RS-530 Interface Table E-A EIA-232 Interface Pin Name I/O Description 1 Shield I/O Shield for cable 2 TD I T ransm.
Appendix E: Connector Pinouts 116 ISU 128 User Manual 61202.029L2-1 Table E-B RS-530 Interface Pin Name I/O Description 1 Shield I/O Shield for cable 2 TD-A I T ransmitted Data 3 RD-A O Received Data .
Appendix E: Connector Pinouts 61202.029L2-1 ISU 128 User Manual 117 Figure E-2 V.35 Interface Table E-C V.35 Interface Pin Name I/O Description A Shield I/O Shield for cable B SG I/O Signal Ground C R.
Appendix E: Connector Pinouts 118 ISU 128 User Manual 61202.029L2-1 Figure E-3 RS-366 Interface Table E-D RS-366 Interface Figure E-4 RJ-45 Interface Table E-E RJ-45 ISDN IFC Pin Name I/O Description .
Appendix E: Connector Pinouts 61202.029L2-1 ISU 128 User Manual 119 Figure E-5 Maintenance Port Table E-F Maintenance Port Pin Name I/O Description 2 TD-A I T ransmitted Data 3 RD-A O Received Data PI.
Appendix E: Connector Pinouts 120 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 121 Acronyms AMI Alternate Mark Inversion ANSI American National Standards Institute B (Channel) A 64 kbps digital information channel BONDING Bandwidth On Demand Int.
Acronyms 122 ISU 128 User Manual 61202.029L2-1 LATA Local Access and Transport Area Mbps Megabits per second MF Multi-Frequency Signalling MNP Microcom™ Network Protocol NEBE Near End Block Errors N.
61202.029L2-1 ISU 128 User Manual 123 Glossary B-Channel 64 kbps bearer channel used for voice, circuit, or packet switched data. bearer service As defined by CCITT standards, a type of telecommunication service that provides the capability for the transmission of information between user-to-network interfaces.
Glossary 124 ISU 128 User Manual 61202.029L2-1 DDS Dataphone Digital Service. AT&T private line service for transmitting data over a digital system. The digital transmission system transmits electrical signals directly, instead of translating the signals into tone of varied frequencies as with traditional analog transmission systems.
Glossary 61202.029L2-1 ISU 128 User Manual 125 ISDN Integrated Services Digital Network. A network architecture that enables end-to-end digital connections.
Glossary 126 ISU 128 User Manual 61202.029L2-1 NT2 Network Termination 2. A unit that provides switching and concentration of subscriber lines at the S-interface.
Glossary 61202.029L2-1 ISU 128 User Manual 127 T1C 3.152 Mbps. Capable of handling 48 voice conversations. T1C is further up the North American digital carrier hierarchy. T2 6.312 Mbps. Capable of handling 96 voice conversations. T2 is four times the capacity of T1.
Glossary 128 ISU 128 User Manual 61202.029L2-1 2B+D The Basic Rate Interface (BRI) in ISDN. A single ISDN circuit divided into two 64 kbps digital channels for voice or data and one 16 kbps channel for low speed data (up to 9,600 baud) and signalling.
Glossary 61202.029L2-1 ISU 128 User Manual 129 X.25 A packet data transfer protocol for the B and D Channels. Defines the interface between Data Terminal Equipment (DTE) and Data Circuit Terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuits.
Glossary 130 ISU 128 User Manual 61202.029L2-1.
61202.029L2-1 ISU 128 User Manual 131 Index A answer call 68 answer tone 37 always tone 37 incoming tone 37 no answer tone 37 outgoing tone 37 asynchronous data format 45 AT command connect message op.
Index 132 ISU 128 User Manual 61202.029L2-1 maintenance port 119 RJ-45 ISDN IFC 118 RS-366 interface 118 RS-530 116 V.35 interface 117 connector type 43 connector types EIA-232 12 RS-366 12 RS-530 12 V.
Index 61202.029L2-1 ISU 128 User Manual 133 flow control (async data format ) 44 RTS options 43 transmit clock (sync) 45 DTR options 43 dump all calls 36 E EIA-232 12 interface 115 environmental specifications 85 EON (end of number) 30 error control 51 F factory setup 66 fallback 54 57.
Index 134 ISU 128 User Manual 61202.029L2-1 loopback DTE 20 loopback network 20 loopback points 20 loopback protocol 20 loopback remote 21 loopback remote 1B 74 VT 100 screen 75 loopback remote 2B 74 .
Index 61202.029L2-1 ISU 128 User Manual 135 R rate adaption 84 rate adaption protocols 54 recommended operating protocols 6, 7 redial last number 68 remote configuration 71, 73 AT commands 71 loopback.
Index 136 ISU 128 User Manual 61202.029L2-1 U unit identification 89 V V.110 7, 51 V.120 7, 50 V.25 V.25 HDLC flag 35 V.25 sync bisync dialing 35 V.25 sync HDLC dialing 35 V.25 bis 33 menu tree 33 V.25 async dialing 34 V.34 51 compression block size options 91 compression options 91 operational mode options 91 V.
Product Support Information Presales Inquiries and Applications Support Please contact your local distributor, ADTRAN Applications Engineering, or ADTRAN Sales: Post-Sale Support Please contact your local distributor first. If your local distributor cannot help, please contact ADTRAN Technical Support and have the unit serial number available.
Ein wichtiger Punkt beim Kauf des Geräts ADTRAN ISU 128 (oder sogar vor seinem Kauf) ist das durchlesen seiner Bedienungsanleitung. Dies sollten wir wegen ein paar einfacher Gründe machen:
Wenn Sie ADTRAN ISU 128 noch nicht gekauft haben, ist jetzt ein guter Moment, um sich mit den grundliegenden Daten des Produkts bekannt zu machen. Schauen Sie zuerst die ersten Seiten der Anleitung durch, die Sie oben finden. Dort finden Sie die wichtigsten technischen Daten für ADTRAN ISU 128 - auf diese Weise prüfen Sie, ob das Gerät Ihren Wünschen entspricht. Wenn Sie tiefer in die Benutzeranleitung von ADTRAN ISU 128 reinschauen, lernen Sie alle zugänglichen Produktfunktionen kennen, sowie erhalten Informationen über die Nutzung. Die Informationen, die Sie über ADTRAN ISU 128 erhalten, werden Ihnen bestimmt bei der Kaufentscheidung helfen.
Wenn Sie aber schon ADTRAN ISU 128 besitzen, und noch keine Gelegenheit dazu hatten, die Bedienungsanleitung zu lesen, sollten Sie es aufgrund der oben beschriebenen Gründe machen. Sie erfahren dann, ob Sie die zugänglichen Funktionen richtig genutzt haben, aber auch, ob Sie keine Fehler begangen haben, die den Nutzungszeitraum von ADTRAN ISU 128 verkürzen könnten.
Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit ADTRAN ISU 128. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei ADTRAN ISU 128 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
