my environment: centos 5.4 asterisk 1.8.22.0 dahdi-linux-complete-2.6.2+2.6.2 chan_ss7 2.2.0 Telecom -> chan_ss7 --> Asterisk --> chan_ss7 --> Telecom the caller can't hear anything and display: -- Called ss7/021114 -- Started music on hold, class 'default', on SS7/1/5 -- Stopped music on hold on SS7/1/5 -- SS7/1/30 is ringing -- SS7/1/30 is making progress passing it to SS7/1/5 now the caller can't hear anything from calling.... wny music on hold stopped after ringing ? However, if I use: MusicOnHold(default) in the dial plan, I can hear the music placed in moh. BR -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20130602/abeeb37b/attachment.htm>