H323 to H323 call transfer

Unanswered Question
Nov 12th, 2009


I have this scenario:

One CallManger version and two H323 Gateway (Cisco 3845)

One H323 Gateway is connected to Alcatel PBX and the other H323 Gateway is connected to PSTN.

Alcatel PBX have extension 3xxx .

CallManager have exension in the range 1000-2499 (internal IP phone).

Extension 1xxx,2xxx can transfer to extension 3xxx but external call come to the PSTN not.

When a call comes to PSTN and I want to make the transfer to extensions 3xxx, call drop and CallManger give a busy signal.

Please help.


I have this problem too.
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