I have an Asterisk system connected with a CLEC that provides SIP termination. When placing calls from phones on the Astersik system to the PSTN, the calling party hears ringing while the called party is saying "hello". The problem appears to happen when calling a POTS line. The problem does not seem to occur when calling a PSTN number on a T1 circuit, nor does it occur on inter-office calls. When I listen to the "Monitor" recordings, I hear ringing and then the called party saying "hello? hello? hello?" while the calling party hears ringing. Is the ringing that the calling party hears generated by Asterisk and not the ringing in the received audio stream? Would this problem occur if the 200 (OK) message were delayed for any reason? Does Asterisk wait for the 200 message before it connects the received RTP stream with the calling party? Thanks, Asterisk v1.2.4 Polycom IP501 phones Private network between the Asterisk system and the CLEC. -- Michael Welter Telecom Matters Corp. Denver, Colorado US +1.303.414.4980 mike@TelecomMatters.net www.TelecomMatters.net