Am new to Asterisk. We’re using Elastix. We’ve created SIP trunk to one of our branch office using PBX (Shoretel) using config below via our intranet line and both incoming and outgoing calls are ok. We’ve created another SIP trunk to another branch office who is using Cisco and used the same config, but of course, different trunk name. Outgoing calls are ok but incoming calls to Asterisk goes intermittent. It goes to “not in service” voice prompt, but after once, twice of trice redial, the call goes in. There are times when incoming call to Asterisk is ok but more instances when it goes to “not in service” before call is received thru the Asterisk.
– Executing [s@from-sip-external:8] Playback(“SIP/x.x.x.x-000cf426”, “ss-noservice”) in new stack
– <SIP/x.x.x.x-000cf426> Playing ‘ss-noservice.gsm’ (language ‘en’)
Not sure why the config below is working ok to one of our SIP trunk but not with Cisco. From forums, there are mention of context=from-pstn, context=from-trunk, context=from-internal, etc. What are the differences between these and if this line is necessary?
Need assistance on how to resolve intermittent incoming call to Asterisk.