CM 6.3: SIP Fax machines connected to Audio Codes gateway are unable to transmit or receive faxes

Doc ID		SOLN285425
Version:		3.0
Status:		Published
Published date:		29 Jun 2018
Created Date:		10 Mar 2016

Author:

obrien11

Details

CM 6.3 SP11
Audio Codes Media-Gateway.
Fax machines configured as 9640SIP stations

Multiple fax machines connected to Audio Codes are unable to transmit or receive faxes. 100% failure rate. This was working before. Audio Codes is connected to CM using a SIP trunk.

Problem Clarification

Below is a list trace of a user failing to send fax.

13:26:45     Calling party trunk-group 10 member 7    cid 0x1081
13:26:45     Calling Number & Name XXXXXXXXXX NO-CPName
13:26:45     dial 55001
13:26:45     term station      55001 cid 0x1081
13:26:45     dial 5500 route:AAR
13:26:45     term trunk-group 3      cid 0x1082
13:26:45     dial 55001 route:AAR
13:26:45     route-pattern 3 preference 1 location 1/ALL cid 0x1082
13:26:45     seize trunk-group 3 member 44    cid 0x1082
13:26:45     Calling Number & Name NO-CPNumber NO-CPName
13:26:45 SIP>INVITE sips:[email protected] SIP/2.0
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45     Calling Number & Name XXXXXXXXXX NO-CPName
13:26:45     Proceed trunk-group 3 member 44    cid 0x1082
13:26:45 SIP<INVITE sips:[email protected] SIP/2.0
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP>INVITE sips:[email protected] SIP/2.0
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP<SIP/2.0 100 Trying
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP>SIP/2.0 100 Trying
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP<SIP/2.0 480 Temporarily Unavailable (SIPS Not Allowed)
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP>ACK sips:[email protected] SIP/2.0
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP>SIP/2.0 480 Temporarily Unavailable (SIPS Not Allowed)
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45 SIP>ACK sips:[email protected] SIP/2.0
13:26:45     Call-ID: 80427e378df2e516b455e556ea00
13:26:45     Alert trunk-group 3 member 44    cid 0x1082
13:26:49     active station      55001 cid 0x1081
13:26:56     Tone Det T38 Fax aux:none tone:CNG uid:0x5028c
             From voip: [X.X.X.X]:2220
13:27:00     G711MU ss:off ps:20
             rgn:1 [X.X.X.X]:6010
             rgn:1 [X.X.X.X]:2220
13:27:00     xoip options: fax:T38 modem:off tty:US uid:0x5028c
             xoip ip: [X.X.X.X]:2220
13:27:00     dial 55001
13:27:00     denial event 2301: Tran/rec codec mismatch D1=0x7f40028c D2=0x20210
13:27:00     idle station      55001 cid 0x1081

Cause

Faulty Audio Codes hardware.

Solution

Replace the Audio Codes Media-Gateway

Additional Relevant Phrases

Audio Codes SIP fax Fax through MP118 not working

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