SIP Trunks and Multitech Fax finder

[phoneguy1983]

Hello,

I have a IPOffice V2 system that is running 8.1(85) and using Rogers SIP Trunks on a dedicated Fibre line. The calls are working fine in and out but after about a week the SIP lines will no longer communicate correctly with the Multi tech fax finder. (It appears it can't negotiate properly)

I have attached a basic trace of a call that doesn't work and one that does from another system.

Any assistance would be appreciated.

Thank You

Working Fax finder

Trunk Information, SYSTEM (192.168.90.2)
22/07/2014 3:47:28 PM
-----------------------------------------------

Peer Domain Name: sip://192.168.x.1
Resolved Address: 192.168.x.1
Line Number: 18
Number of Administered Channels: 2
Number of Channels in Use: 0
Administered Compression: G711 Mu, G711 A
Silence Suppression: Off
Layer 4 Protocol: UDP
SIP Trunk Channel Licenses: 56
SIP Trunk Channel Licenses in Use: 0
SIP Device Features:

Channel URI Call Current Time in Remote Media Codec Connection Caller ID or Other Party Direction Round Trip Receive Receive Packet Transmit Transmit Packet
Number Group Ref State State Address Type Dialed Digits on Call of Call Delay Jitter Loss Fraction Jitter Loss Fraction
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1 Idle 00:00:25

2 Idle 3 days 23:23:42


Trace Output - Channel 1:
22/07/14 3:46:54 PM-749ms Line = 18, Channel = 1, SIP Message = Invite, Call Ref = 2025, Direction = From Switch, From = 9055551111@192.168.x.1, To = 5450@192.168.x.1
22/07/14 3:46:54 PM-757ms Line = 18, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = To Switch, From = 9055551111@192.168.x.1, To = 5450@192.168.x.1, Response = 100 Trying
22/07/14 3:46:54 PM-763ms Line = 18, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = To Switch, From = 9055551111@192.168.x.1, To = 5450@192.168.x.1, Response = 183 Session Progress
22/07/14 3:46:54 PM-763ms Call Ref = 2025, Alerting, Line = 18, Channel = 1
22/07/14 3:46:54 PM-764ms Call Ref = 2025, Originator State = Incoming Alerting, Type = Trunk, Destination State = Outgoing Alerting, Type = Trunk
22/07/14 3:46:54 PM-766ms Line = 22, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = From Switch, From = 9055551111@173.46.30.202, To = 4165551111@10.0.x.1, Response = 180 Ringing
22/07/14 3:46:54 PM-802ms Line = 18, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = To Switch, From = 9055551111@192.168.x.1, To = 5450@192.168.x.1, Response = 200 OK
22/07/14 3:46:54 PM-803ms Line = 18, Channel = 1, SIP Message = Ack, Call Ref = 2025, Direction = From Switch, From = 9055551111@192.168.x.1, To = 5450@192.168.x.1
22/07/14 3:46:54 PM-814ms Line = 22, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = From Switch, From = 9055551111@173.46.30.202, To = 4165551111@10.0.x.1, Response = 200 OK
22/07/14 3:46:54 PM-846ms Line = 22, Channel = 1, SIP Message = Ack, Call Ref = 2025, Direction = To Switch, From = 9055551111@173.46.30.202, To = 4165551111@10.0.x.1
22/07/14 3:46:54 PM-849ms Call Ref = 2025, Originator State = Connected, Type = Trunk, Destination State = Connected, Type = Trunk
22/07/14 3:46:54 PM-849ms Call Ref = 2025, Answered, Line = 18, Channel = 1
22/07/14 3:46:55 PM-353ms Line = 22, Channel = 1, SIP Message = Invite, Call Ref = 2025, Direction = From Switch, From = 4165551111@10.0.x.1, To = 9055551111@173.46.30.202
22/07/14 3:46:55 PM-363ms Line = 22, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = To Switch, From = 4165551111@10.0.x.1, To = 9055551111@173.46.30.202, Response = 100 Trying
22/07/14 3:46:55 PM-403ms Line = 22, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = To Switch, From = 4165551111@10.0.x.1, To = 9055551111@173.46.30.202, Response = 200 OK
22/07/14 3:46:55 PM-405ms Line = 22, Channel = 1, SIP Message = Ack, Call Ref = 2025, Direction = From Switch, From = 4165551111@10.0.x.1, To = 9055551111@173.46.30.202
22/07/14 3:47:15 PM-719ms Line = 18, Channel = 1, SIP Message = Bye, Call Ref = 2025, Direction = To Switch, From = 5450@192.168.x.1, To = 9055551111@192.168.x.1
22/07/14 3:47:15 PM-720ms Line = 18, Channel = 1, SIP Message = Response, Call Ref = 2025, Direction = From Switch, From = 5450@192.168.x.1, To = 9055551111@192.168.x.1, Response = 200 OK
22/07/14 3:47:15 PM-723ms Call Ref = 2025, Originator State = Connected, Type = Trunk, Destination State = Clearing, Type = Trunk
22/07/14 3:47:15 PM-723ms Call Ref = 2025, Disconnect from Destination End


Failing Fax Finder

Trunk Information, STSTEM B(192.168.x.2)
22/07/2014 4:00:21 PM
----------------------------------------------

Peer Domain Name: sip://192.168.x.3
Resolved Address: 192.168.x.3
Line Number: 17
Number of Administered Channels: 4
Number of Channels in Use: 0
Administered Compression: G711 Mu, G711 A
Silence Suppression: Off
SIP Trunk Channel Licenses: 54
SIP Trunk Channel Licenses in Use: 5
SIP Device Features:

Channel URI Call Current Time in Remote Media Codec Connection Caller ID or Other Party Direction Round Trip Receive Receive Packet Transmit Transmit Packet
Number Group Ref State State Address Type Dialed Digits on Call of Call Delay Jitter Loss Fraction Jitter Loss Fraction
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1 Idle 00:00:06

2 Idle 3 days 16:19:38

3 Idle 3 days 16:19:38

4 Idle 3 days 16:19:38


Trace Output - Channel 1:
22/07/14 4:00:17 PM-212ms Line = 17, Channel = 1, SIP Message = Invite, Call Ref = 3156, Direction = From Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3
22/07/14 4:00:17 PM-223ms Line = 17, Channel = 1, SIP Message = Response, Call Ref = 3156, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 100 Trying
22/07/14 4:00:17 PM-229ms Line = 17, Channel = 1, SIP Message = Response, Call Ref = 3156, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 183 Session Progress
22/07/14 4:00:17 PM-231ms Call Ref = 3156, Alerting, Line = 17, Channel = 1
22/07/14 4:00:17 PM-231ms Call Ref = 3156, Originator State = Incoming Alerting, Type = Trunk, Destination State = Outgoing Alerting, Type = Trunk
22/07/14 4:00:17 PM-234ms Line = 92, Channel = 4, SIP Message = Response, Call Ref = 3156, Direction = From Switch, From = 9055551111@173.46.30.202, To = 9059523463@10.0.x.1, Response = 180 Ringing
22/07/14 4:00:17 PM-263ms Line = 17, Channel = 1, SIP Message = Response, Call Ref = 3156, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 200 OK
22/07/14 4:00:17 PM-265ms Line = 17, Channel = 1, SIP Message = Ack, Call Ref = 3156, Direction = From Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3
22/07/14 4:00:17 PM-281ms Line = 92, Channel = 4, SIP Message = Response, Call Ref = 3156, Direction = From Switch, From = 9055551111@173.46.30.202, To = 9059523463@10.0.x.1, Response = 200 OK
22/07/14 4:00:17 PM-314ms Line = 92, Channel = 4, SIP Message = Ack, Call Ref = 3156, Direction = To Switch, From = 9055551111@173.46.30.202, To = 9059523463@10.0.x.1
22/07/14 4:00:17 PM-318ms Call Ref = 3156, Originator State = Connected, Type = Trunk, Destination State = Connected, Type = Trunk
22/07/14 4:00:17 PM-318ms Call Ref = 3156, Answered, Line = 17, Channel = 1
22/07/14 4:00:17 PM-773ms Line = 17, Channel = 1, SIP Message = Invite, Call Ref = 3156, Direction = From Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3
22/07/14 4:00:17 PM-778ms Line = 17, Channel = 1, SIP Message = Response, Call Ref = 3156, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 100 Trying
22/07/14 4:00:17 PM-782ms Line = 17, Channel = 1, SIP Message = Response, Call Ref = 3156, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 406 Not Acceptable
22/07/14 4:00:17 PM-784ms Line = 17, Channel = 1, SIP Message = Ack, Call Ref = 3156, Direction = From Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3
22/07/14 4:00:17 PM-786ms Call Ref = 3156, Originator State = Connected, Type = Trunk, Destination State = Clearing, Type = Trunk
22/07/14 4:00:17 PM-786ms Call Ref = 3156, Disconnect from Destination End
22/07/14 4:00:17 PM-797ms Line = 17, Channel = 1, SIP Message = Bye, Direction = From Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3
22/07/14 4:00:17 PM-802ms Line = 17, Channel = 1, SIP Message = Response, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 100 Trying
22/07/14 4:00:17 PM-805ms Line = 17, Channel = 1, SIP Message = Response, Direction = To Switch, From = 9055551111@192.168.x.3, To = 579@192.168.x.3, Response = 200 OK

 

[hairlessupportmonkey]

Why dont you have the fax finder connected to its own trunk with the ITSP rather than via the switch?

ACSS - SME
General Geek

 

[fshaw]

SIP and fax servers (and IVRs, and modems, etc) just don't play well together. Fax servers rely on analog signals. SIP trunks (or any other VoIP) converts analog to VoIP and then IP Office recreates the analog signal. The recreated analog is not same as the original and will have issues with handshake or poor quality or just stop in mid fax.

You can ask the SIP provider to use 64K (g711) for the fax trunks instead of the standard 8K packet, and that will give a more precise sound that may fix your problem. Otherwise, you may need to get new old-fashion trunks as suggested above.

 

[phoneguy1983]

They just have the one trunk coming in and it is authenticated to the internal IP.

It turns out that multi techs newest release has an issue with 8.1 but works fine with 9.0.

I had to downgrade the fax finder 3.0.4.5 to make it work