Nortel Symposium TAPI Service Provider for Succession 3.0, User Manual, Page: 165 / 198

Chapter 7 Compatibilities and features 165
Network Managers Guide for Symposium TAPI Service Provider for Succession, release 3.0
To understand MADN operation in a Symposium TAPI environment, examine a
scenario where you configure two lines, 4 0 0 2 and 4 0 0 3, to monitor an MADN
of 2530. When a call is made to MADN 2530, the following process occurs on the
telephone sets:
1
Both telephone sets show the ringing call state.
2 If you answer the call using the 2530 address on 4 0 0 2, both telephone sets
show the connected state but no call control is possible from the 4 0 0 3
telephone set.
3 If 4 0 0 2 places the call on hold, either of the telephone sets can perform
unhold.
4
The telephone set that performs unhold assumes call control.
Although the TAPI server behavior is different than usual, it provides the required
MADN capabilities through the TAPI application. During the call, the following
behavior occurs on the TAPI server:
1 Although both telephone sets show the ringing call state, the TAPI browser
application shows a call offered message on line 4 0 0 2 only.
2
If you answer the call manually using the 2530 address on line 4 0 0 3, the
TAPI browser application shows a call connected message on line 4 0 0 2
only.
3
In this scenario, no call control is possible from the 4 0 0 2 telephone set, but
the TAPI browser application enables you to perform call control from line
4 0 0 2 through the TAPI application that monitors the line.
In Direct Connect version the following scenario can occur:
The problem they have is that they are using Direct Connect, and when they
try to make a call from the MADN using the Tapi Monitored AST key it is only
made from that key if it handled the last call for that DN i.e. if the non-AST key
handled the last call, then the next call will be made from there. In the latter
scenario the softphone application would still have visibilty of the call but will
not have full call control.
4
In the Direct Connect version the following scenario can occur:
When making a call from the MADN using the Tapi Monitored AST key, the
call is made from where the last keypress took place.i.e.
If Key 3 is manually pressed on 4-0-0-5 (i.e. hanging up a call) then any calls