Skype SIP trunk issues

[phil204]

I am setting up Skype SIP trunks for a customer but having issues. The system is a 3300 MXe running on 9.0.1.17. The system has registered successfully the skype but when trying to dial over the link it comes up "access denied" and has a message in the logs

"Authentication failure - 403 received Recent failure count 1 in last 0 seconds Total failure count 41 Type of call : Outgoing Route 1 Link Skype From 10.0.2.2 To SkypeSIP "

I have read a few posts on here and followed the specific mitel guide for skype sip trunks. Does anyone have any ideas what else i can try?

 

[Billz66]

any reason why you couldnt upgrade the Controller ?
There have been numerous imptrovements to the SIP handling in later versions

 

[Mitelpassion]

Yep, I'd upgrade first and then try. Massive changes on the SIP stack on MCD from release 9 to the latest release, or at least MCD 4.2

Also some wireshark traces would be useful