Again I'm having trouble with sip trunks! I have two problems on different sites.

My first problem is the SIP trunks lock up when they do a trunk to trunk transfer I keep having to remote in and clear the ports.

My second problem is no voice on a trunk to trunk transfer works fine on a normal transfer but not external.

Thanks in advance

For your second problem. Turn on sipt>sipt mgi use to on. Don't use MPS service. This will allow the audio to go through.

You will need to look at the signalling in a wireshark trace, as sip trunks should clear down at the end of the call just like isdn does as the system gets the "bye" message.

Saying that i have a site where the spnet trunks randomly lockup and have to be cleared despite showing as idle in dm/kmmc