Fax over PRI

[Tobiasmoran]

I have a customer who just switched from a T1 to a PRI. They have an MICS, 7.0. Fax machines are of course, going through one of 6 ASMs.

At this point, they cannot send or receive faxes.

When one dials these fax machines directly (xxx-xxx-xxxx), they get a very distorted tone, rather than a traditional fax tone. You can tell it's the fax answering, however it sounds horrible, and I've never heard a sound like this in my 18 years of telecom. I am officially stumped.

Any help or advice would be greatly appreciated!

 

[Deweyhumbolt]

My first guess is the ASM. Do all the problem faxes punch down on the same ASM?

Adversity is Opportunity

 

[Tobiasmoran]

Yes, and that was my first guess as well. However, I just installed that ASM two weeks ago. Brand new, out of the box.

Faxes were working just fine until the T1 was switched to the PRI.

 

[Deweyhumbolt]

So, if use your butt set instead of the fax, it works?

Adversity is Opportunity

 

[Tobiasmoran]

Actually we tried with a butt set and an analog phone. Both came up sounding like hell. Looks like it is the ASM afterall.

UGH.

 

[Deweyhumbolt]

You said you had 6 ASMs, switch the fax to a known working ASM and test. Then you'll know.

Adversity is Opportunity

 

[Tobiasmoran]

Yup...we did do that. I neglected to post that in my previous entry.

Thanks

 

[RikRodgers]

Have you tried power cycling the ASM? I've had the same issue with FSM's, especially when they're on extenders. That usually does the trick.