Isdn Service From Pacific Bell - 3Com ISDN Modem User Manual

Table 6-3 How to Use Call Transfer
How Do I
Cancel the second call and
switch back to the first call?
If you experience difficulty implementing any of the
Supplementary Voice Features, confirm that you have these
features enabled on your ISDN line, and that the default Call
Conferencing, Call Transfer, and Call Drop S register values
(S77, S78, and S79) match the values required by your
telephone company.
ISDN Service from Pacific Bell
If your ISDN line has been provisioned through Pacific Bell,
and you are having difficulty implementing Call Hold, Call
Drop, Call Conference and Call Transfer, you may need to
make three additional S register changes to take advantage
of these Flexible Calling features.
1 Contact Pacific Bell and discern the appropriate Call Hold,
Call Drop, Call Conference and Call Transfer key values.
2 Launch your terminal emulation software.
You will need to change the values of S registers 77, 78, and
79.
3 Send the following command to the 3C882 ISDN modem:
AT S77=x S78=x 79=x
(where
[Enter] or [Return].
Do This
If the dialed party is busy, press and release the switch
hook button to cancel the attempted call and
reconnect you to the first call. If you should hang up,
the phone will ring back, indicating that you have a
call on hold.
If you dialed a wrong number, or the far end does not
answer, hang up the phone to abort the attempted
call. The phone will then ring, indicating that the first
call is on hold. Answer the phone to reconnect you to
the first call.
is the key value supplied by Pacific Bell) and press
x
Supplementary Voice Features
6-5