MiVB 7.0 to Asterisk

[MitelUK2010]

Hi looking to see if anyone could either provide me a working SIP peer profile for connecting Mitel to Asterisk. I have the link up and inbound calls from Asterisk to Mitel work, outbound i get a "420 bad extension" - when i look i see a 100rel unsupported in the packet capture.

Any pointers would be appreciated.

Thanks

[sarond]

Try setting 'Disable Reliable Provisional Responses' to Yes under Signaling and Header Manipulation tab on the SIP Peer.