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Mitel Forums => Mitel MiVoice Business/MCD/3300 => Topic started by: handwritten on October 22, 2014, 04:28:38 PM

Title: t.38 fax error
Post by: handwritten on October 22, 2014, 04:28:38 PM

We have been using fax over SIP trunks through SIP converter boxes (Cisco ATA-122) without using t.38.  DID numbers point to internal extensions assigned to the SIP boxes.  Completion rates are OK, not great.  We have t.38 licenses, so I thought I'd try it out.  I followed the instructions in the on-line help (see attached file for these instructions), but I'm getting the following error in the log:

   Port:11930f90 Failed to Apply Policies.Most likely T38 is not allowed in the zoning plan. (substate 7)

The error only shows up when I enable t.38 in the SIP boxes.  Has anyone seen anything similar?

Release level: 7.0 PR1
Active software load: 13.0.0.83

Title: Re: t.38 fax error
Post by: Abs_76 on March 07, 2016, 06:43:36 AM

I get the same error and I am running MCD 7.0 Sp1 PR1.

Whilst in the lab with the SIP Carrier with MCD 7.0 Sp1 PR2 and above , I do not come across this issue.

Might be worthwhile upgrading to the next version or MCD 7.2

Title: Re: t.38 fax error
Post by: jsorensen on November 22, 2019, 08:35:46 AM

Most likely T38 is not supported on your SIP trunks.

I know Mitel Cloud via Intermedia does not support T38.