CM server are running 5.1(3) ES4102 version. Hardware conference and transcoder are created. Voice gateway are running 12.(4)16b.
As ip phone user start a meetme conference, another ip phone user make external call to mobile user and transfer the call to existing meetme conference.External mobile user can join to meetme without issue.As the mobile user hang up, all remaining users in meetme will hear the disconnect tone. The meetme conference cannot release even all ip phone users hangup. It seems the voice path from the mobile user still exists.
If the external user comes from PSTN fix network e.g. office,home. As the external user hangup, the remaining phone users cannot hear disconnect tone and the meetme can be released after all members hangup the phone.
If the external mobile ring directly to existing meetme conference, the result is the same as from PSTN home user and will not case this issue.
It seems the mobile network cannot pass the disconnect signal to PSTN fix network.
I find out the command "disc_pi_off " but this command only useful in h.323 gateway, the current voice gateways are running MGCP protocol.
How can I fix this issue?
Does anyone have this experience?
Thanks for any suggestions!