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Fujitsu SRS-2100 (
Page 12
Multipoint Configurations
In older ISDN installations, most phone connections are point-to-point.
Each phone in a point-to-point configuration requires a separate line into
your building. However, most service providers now offer multipoint
configurations as a subscription option. In a multipoint configuration, up
to eight devices (digital sets and/or terminal adapters) can be connected
to a single line. For example, your company could connect two digital
sets and two data terminal adapters to a single line. The two digital sets
could each use one B-channel for voice communication, and the data
terminal adapters could use the D-channel for packet-switched data calls.
SPID
For your SRS-2100 to work, it must have a valid Service Profile Identifier
(SPID). (If your SRS-2100 is the voice/data version, you need two SPIDs,
one for voice and one for data.) The SPID number is usually entered
when the SRS-2100 is installed. So if your digital set already has a SPID
number, you don't have to reenter it. If you do need to enter a SPID
number, you can find out what it should be from your System
Administrator or service provider. For the procedure to enter a SPID, see
Appendix B.
CAUTION: Once the SPID number is entered, don't change it unless
your System Administrator tells you to do so. Your SRS-2100 won't
work without the correct SPID number. If the SPID number is wrong,
the set displays the message SPID NG. (The message is redisplayed a
second time if the data terminal adapter SPID is also invalid.) Enter the
correct SPID number and you'll get the normal dial tone.