ADTRAN ISU 512 User Manual

Also see for ISU 512: User manual Specifications

Contents

ADTRAN ISU 512 User Manual Manual pdf 81 page image

Chapter 7: Troubleshooting61202.086L1-1 ISU 512 User Manual 65IF THE DISPLAY READS SPID{1,3,5, OR 7}This section does not apply to installations outside of North America.If the ISU 512 reads SPID1, then the ISU 512 is physically connected to the lo-cal telephone service provider and has established Logical Layer 2. The ISU512 is unable to establish layer 3. The problem is with one or more of the fol-lowing:• The ISU 512 software setup• The software setup of the telephone service providerTo isolate the problem, use the following procedure:1. Ensure the ISU 512 is set up for the correct switch type by selecting CON-FIG, Netw. options, Dial Line, and Switch type.2. Ensure that the ISU 512 is set up with the correct SPID and LDN by select-ing CONFIG, Netw. options, Dial Line, Terminal ID, and SPID/LDN.Review the section Setting the SPID in the chapter Configuration.3. Connect another piece of functioning ISDN equipment to the ISDN line.4. With the ISU 512 connected to the ISDN line and powered up, talk to yourservice provider's repair group and inform them you have an ISDN basicrate line that appears physically OK but has no Terminal Endpoint Identi-fier (TEI). Ask them to check the ISDN line translation and ensure that theline supports dynamic TEI allocation. Inform them an NT1 and terminaladapter device are connected to the ISDN line.IF THE DISPLAY READS SPID{2,4,6, OR 8}This section does not apply to installations outside of North America.If the ISU 512 continues to read SPID2, the ISU 512 has completely initializedthe first phone number but is unable to establish Logical Layer 3 for the secondphone number. The problem is with one or more of the following: