IBM SC30-3681-08 Optional Isdn Parameters, TEI number of your Isdn switch, D-channel. For example

Using ISDN

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 con®gure 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 con®gurable, 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 Pro®le ID (SPID).

The SPID is a number up to 20 digits long that uniquely identi®es 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 Identi®er (TEI) to match the signalling
TEI number of your ISDN switch.
Check with your service provider to ®nd 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 con®gure 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 ªSetº on page 629.

Optional ISDN Parameters

This section describes optional ISDN parameters you can set. For a complete description of these commands see ªISDN Con®guration Commandsº on page 627.

vFor all ISDN switches except INS64, you can con®gure the limit for the number of calls to an address. Use the set retries-call-addresscommand to set the number of calls to a non-responding destination. Use the set timeout-call-addresscommand to set the time period to wait before trying the call again.

Chapter 45. Using the ISDN Interface 621