sip trunk between mitel pbx and panasonic pbx

[ruks16]

Hi,
i've googled a lot for it but could not find any info. I've been trying to find a way to connect a 3300 to a panasonic ns-300 directly, without using an asterisk server in-between. I could make the 3300 connect via a panasonic sip account but when trying to make calls, i get 'Error' on the mitel ip phones. can anyone guide me on how to sort this out? thx

[acejavelin]

Error would indicate the digits being passed are incorrect and the Panasonic is rejecting the call... Do a SIP TAIL ON  in maintenance commands after attempting a call and check the messaging, my guess is your not absorbing or adding the correct digits.

Sent from my XT1575 using Tapatalk

[ruks16]

thx for the reply and sorry for late reply as i was away.
The digits are correctly being sent and found this error msg: SIP/2.0 500 Server Internal Error
below is an extract of the trace log

Code: [Select]

SIP/2.0 500 Server Internal Error
Via: SIP/2.0/UDP 192.168.10.17:5060;branch=z9hG4bK470451808-92935016;received=192.168.10.17
Call-ID: 469961808-92935012@192.168.10.17
From: "mitel ext" <sip:1950@192.168.10.17>;tag=0_469961808-92935014
To: <sip:798@192.168.36.7>;tag=877883249
CSeq: 3 INVITE
Content-Length: 0

Event Type : ServerErrResp
Call Object Id : 1338656
Session Id : 0xf61ad20, Application ID : 3, Unique ID : 0
Request Type : 6
Reason Cause: 0
Reason Phrase :
Response Code : 500
Warning Code : 0  Warning Text :