Mitel TA7102 fax woes, MiVB 8.0 MXE III SIP trunks 1

[Crowtalks]

We have a couple of TA7102 terminal adapters that work wonderfully for voice, but when I tried to connect them to local fax machines, the faxes are failing.

I thought it was a SIP trunk issue until I attempted to send faxes internally and received the same failure.

When I dial the fax number, I hear the outbound fax tome start, I hear it ring the far end, but as soon as the far end answers with a fax signal, I receive a busy tone and the call drops. I have made a couple of minor changes in the media setting with no affect.

The locations that fax in our campus system are remote to the MXE III, so analog extensions off the back of the cabinet is not available.

Jim

"If I had known it would turn out like this, I would have become a locksmith" Albert Einstein

NCSS, NCTS, NCTE, CS1000E, Call Pilot
Avaya IP Office
Mitel 3300 Advanced, 5000, SX200, NuPoint, MiCollab, MBG

 

[Lundah]

Check the settings in the ATA to ensure the G.711U codec is allowed. I believe they have only G.711A (EU standard) enabled by default, so you need to manually allow G.711U and/or T.38, depending on what the SIP carrier supports.

 

[Crowtalks]

Thanks...yeah G.711U is enabled and T.38 is also.

I tried it with and without T.38. I am testing faxing internally 1st and I get the same failure as I do when I fax out of the system.

"If I had known it would turn out like this, I would have become a locksmith" Albert Einstein

NCSS, NCTS, NCTE, CS1000E, Call Pilot
Avaya IP Office
Mitel 3300 Advanced, 5000, SX200, NuPoint, MiCollab, MBG

 

[Lundah]

Can you grab a packet trace of a test call? That should have clues as to why the call is disconnecting, but it sounds like a codec mismatch.

 

[Crowtalks]

I'll see what I can do

"If I had known it would turn out like this, I would have become a locksmith" Albert Einstein

NCSS, NCTS, NCTE, CS1000E, Call Pilot
Avaya IP Office
Mitel 3300 Advanced, 5000, SX200, NuPoint, MiCollab, MBG

 

[Lundah]

If you have access to Mitel KMS (user group members get access, MUG membership is free), check articles HO973 and HO2643 for the recommended configuration.

 

[Crowtalks]

Thanks for the info!

I'll go through the PDFs and see if it helps!

"If I had known it would turn out like this, I would have become a locksmith" Albert Einstein

NCSS, NCTS, NCTE, CS1000E, Call Pilot
Avaya IP Office
Mitel 3300 Advanced, 5000, SX200, NuPoint, MiCollab, MBG

 

[Crowtalks]

Thanks Lundah...

HO2643 settings solved my issue!

"If I had known it would turn out like this, I would have become a locksmith" Albert Einstein

NCSS, NCTS, NCTE, CS1000E, Call Pilot
Avaya IP Office
Mitel 3300 Advanced, 5000, SX200, NuPoint, MiCollab, MBG