Fujitsu SRS-1050 Manual Do Utilizador
Fujitsu SRS -1050
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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.
Multipoint operation goes on behind the scenes. The only time you
would be aware of it is if you get "blocked" from using a line. If more
than two users bid for the two B-channels at the same time, the message
B-CHANNEL BUSY appears. Talk to your System Administrator if you
get this message frequently.
SPID
For your SRS-1050 to work on a multipoint line, it must have a valid
Service Profile Identifier (SPID). The SPID number is usually entered
when the SRS-1050 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 service
profile identifier, 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-1050 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.
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.