3-14
Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-03
Chapter 3
Configuring with the Command-Line Interface
Configuring ISDN BRI WAN Interface Cards
Defining ISDN Service Profile Identifiers
Some service providers assign service profile identifiers (SPIDs) to define the services to which an ISDN
device subscribes. If your service provider requires SPIDs, your ISDN device cannot place or receive
calls until it sends a valid SPID to the service provider when initializing the connection. A SPID is
usually a seven-digit telephone number plus some optional numbers, but service providers might use
different numbering schemes. SPIDs have significance at the local access ISDN interface only; remote
routers are never sent the SPID.
Currently, only DMS-100 and NI-1 switch types require SPIDs. Two SPIDs are assigned for the
DMS-100 switch type, one for each B channel. The AT&T 5ESS switch type might support SPIDs, but
Cisco recommends that you set up that ISDN service without SPIDs.
If your service provider assigns you SPIDs, you must define these SPIDs on the router. To define SPIDs
and the local directory number (LDN) on the router for both ISDN BRI B channels, use the following
isdn spid commands:
Router (config-if)# isdn spid1
spid-number
[
ldn
]
Router (config-if)# isdn spid2
spid-number
[
ldn
]
Note
Although the LDN is an optional parameter in the command, you might need to enter it so the router
can answer calls made to the second directory number.
For further information on configuring ISDN, see the chapters “Configuring ISDN” and “Configuring
DDR” in the Wide-Area Networking Configuration Guide publication, for your Cisco IOS software
release.
5ESS National ISDN (NI-1) BRI Terminal type = A
2 B channels for voice or data
2 directory numbers assigned by service provider
2 SPIDs required, assigned by service provider
Set speed for ISDN calls to 56 kbps outside local exchange
Directory number 1 can hunt to directory number 2
DMS-100 BRI
2 B channels for voice or data
2 directory numbers assigned by service provider
2 SPIDs required, assigned by service provider
Functional signaling
Dynamic terminal endpoint identifier (TEI) assignment
Maximum number of keys = 64
Release key = no, or key number = no
Ringing indicator = no
EKTS = no
PVC = 2
Request delivery of calling line ID on Centrex lines
Set speed for ISDN calls to 56 kbps outside local exchange
Directory number 1 can hunt to directory number 2
Table 3-7
ISDN Provisioning by Switch Type (continued)
Switch Type
Provisioning
