ChanSpy SIP > SIP


I am trying to ChanSpy on SIP > SIP channels and on SIP > ZAP channels.

Spying on SIP > ZAP channels works fine, but spying on SIP > SIP channels only sends through one side of the conversation. Sometimes this is the originating side and sometimes it is the receiving side; I think this is dependent on who is talking at the moment of calling ChanSpy.

I tried transmit_silence_during_record = yes in asterisk.conf but this does not help. I am running Asterisk 1.2.24 and can not easily upgrade. Any suggestions?