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Dial Line/Switch Protocol
Write security: 2; Read security: 5
Find out what kind of ISDN switch protocol the local CO is using by asking
the local telephone administrator or the telephone company representative.
The Express XL/XLT can be configured for the following:
AT&T 5ESS (def) AT&T 5ESS© Custom
DMS-100
National ISDN1 National ISDN-1 (could be a NorTel, AT&T, or
NEC
Dial Line/Area Code
Write security: 2; Read security: 5
Enter 3-digit area code when using ExpertISDN.
Dial Line/SPID 1
Write security: 2; Read security: 5
The SPID is a sequence of digits used to identify ISDN terminal equipment to
the ISDN switch. The SPID is assigned by the local 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.
The number of SPIDs required (0, 1, or 2) depends on how your ISDN line is
configured. For instance, a point-to-point line has no SPID. Multipoint lines
may have one or two SPIDs. The Express XL/XLT 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.
National ISDN-1 switches require the addition of a two-digit terminal identifier (TID)
at the end of the SPID.
61200070L1-1
Chapter 3: Terminal Menu Operation and Structure
Northern Telecom DMS-100™ Custom
Siemens EWSD)
Nippon Electric Company Switch
SPID 1 =
0
1
SPID 2 =
0
1
Express XL/XLT User Manual
5
5
5
1
2
1
5
5
5
1
2
1
2
0
3
0
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