External Transfer calls dropped

[yutel]

Hi guys,
I have a situation on 9.0 Avaya IP Office where forwarded calls to cell phone are being droped after 5 seconds.
Customer has SIP trunks and there is no problem on regular calls.
I tried to use different line number for dialing out for forwarding (created new SIP URI) but calls are still being dropped.
Thank you in advance for help.

 

[IPGuru]

What does system monitor tell you is happening when the call is being setup?

Do you have a mantelpiece contract these are the sort of issues a competent maintainer would be able to resolve very quickly


A Maintenance contract is essential, not a Luxury.
Do things on the cheap & it will cost you dear