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Chapter 5: Configuration
61202.086L1-1 ISU 512 User Manual 29
Terminal Identification
Terminal identification is assigned by the local telephone company.
Use the following menu path to set the terminal identification.
3=CONFIG
1=Netw. options
1=Dial Line
3=Terminal ID
1=Set SPID
2=Set LDN
Setting the SPID
The service profile identifier (SPID) is a sequence of digits used to identify
ISDN terminal equipment to the ISDN switch. The SPID is assigned by the lo-
cal phone company when the ISDN line is installed and it usually looks similar
to the phone number. Obtain SPIDs from the telephone administrator or local
telephone representative.
Outside of North America, SPIDs do not have to be entered.
The number of SPIDs required (up to 8) depends on how the ISDN line is con-
figured. For instance, there are no SPIDs for a point-to-point line. Multipoint
lines may have one or two SPIDs. The ISU 512 uses the presence of SPID 1 to
determine if the line is multipoint. If the line has only one SPID, then it must
be entered in SPID 1, SPID 3, SPID 5, and SPID 7, depending on the number of
lines being installed.
Use the Up and Down arrows to select the SPID to enter. SPID numbers cor-
respond to the IFC connector on the rear of the ISU 512 as follows:
IFC #1 SPID 1 (pair with LDN 1) and SPID 2 (pair with LDN 2)
IFC #2 SPID 3 (pair with LDN 3) and SPID 4 (pair with LDN 4)
IFC #3 SPID 5 (pair with LDN 5) and SPID 6 (pair with LDN 6)
IFC #4 SPID 7 (pair with LDN 7) and SPID 8 (pair with LDN 8)
Press Enter to select the SPID and use the keypad to enter the SPID number.
While keying/editing a SPID, the Up arrow allows backspacing through the
number string to correct mistakes. The Down arrow scrolls back to the last
digit entered. To cancel a number, use the Up arrow to backspace through the
number, then press Enter. After entering each SPID, press Enter.