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4. For BRI only, set the ISDN interface to either point-to-point (pp) or multipoint
(mp).
Point-to-point is one ISDN device on an ISDN line. Multipoint is two or more
ISDN devices sharing an ISDN line. With some switch variants, you must
configure the line as multipoint regardless of how many devices are on it. Check
with your ISDN service provider.
ISDN Config>set multi-point-selection
Multipoint Selection [MP]? pp
Note: PRI is not configurable, it is always point-to-point.
5. For BRI only, if you are connected to a U. S. switch variant, your service
provider may require a Service Profile ID (SPID).
The SPID is a number up to 20 digits long that uniquely identifies the ISDN
device. Your ISDN service provider assigns SPIDs. You must get the SPID
number from your service provider.
ISDN Config>set spid
Enter BChannel Number [1]? 1
Enter Service Profile ID (SPID) []? 91955555550101
6. For BRI only, set the Terminal Endpoint Identifier (TEI) to match the signalling
TEI number of your ISDN switch.
Check with your service provider to find out which TEI signalling the switch
supports. The default TEI is auto. If the switch to which your ISDN interface is
connected does not support automatic TEI signalling, you must set the TEI to a
value from 0 to 63, assigned by your provider.
If you are connected to a 5ESS or USNI1 BRI switch, you must set the TEI for
each B-channel. The set tei command prompts you for a B-channel number.
ISDN Config>set tei
TEI [AUTO]? 10
Note: TEI for a PRI is always 0.
If you are using X.25 on the D-channel, you must configure a separate TEI for
the D-channel. For example:
ISDN Config>set tei 2
TEI 2 []? 21
7. To set the frame size, use the set framesize command. For example:
ISDN Config>set framesize
Framesize in bytes (1024/2048/4096/8192) [1024]? 2048
Note: If you choose a frame size of 1024, PPP will not work over the ISDN dial
circuit, since the minimum frame size for PPP is 1500.
For more information about setting the ISDN framesize, see “Set” on page 629.
Optional ISDN Parameters
This section describes optional ISDN parameters you can set. For a complete
description of these commands see “ISDN Configuration Commands” on page 627.
v For all ISDN switches except INS64, you can configure the limit for the number
of calls to an address. Use the set retries-call-address command to set the
number of calls to a non-responding destination. Use the set
timeout-call-address command to set the time period to wait before trying the
call again.
Using ISDN
Chapter 45. Using the ISDN Interface 621
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