Fax extension stopped working suddenly

[TyMad]

We have ACS 8.0

I have gone through all of the fax extension settings probably about 10-15 times now to make sure they are set according to the book for a fax-saver line. We have 6 phone lines in a hunt group. Only line 6 is setup on the fax extension (ext. 24). Line 6 is also setup as a phone line that is answered by the receptionist, when she hears the fax tone she transfers to fax machine with fax button. I can hear the fax machine making noises and it says receiving, but never actually receives the fax. I have connected the fax machine directly to line 6 to bypass phone system and it works fine. Also, about 2-3 weeks ago I had set it up and had the fax machine working just fine, went on vacation for a few days and when I came back it was no longer working correctly. I can get a dial tone and send out faxes just fine we are just having trouble receiving them. Any ideas?

I read toughtonetommy's response in another thread that says "I've seen some fax machines that simply won't answer to the ringing signal from a Partner control unit. They don't like the voltage and/or the waveform."

Is there a way to check or change the voltage coming to the fax machine? I would think, if it were working before and just stopped, that it may have to do with voltage as opposed to the programming be wrong. Any help would be greatly appreciated as I'm about to start ripping my hair out on this one!

 

[SYQUEST]

To check the ringing voltage and waveform, you need an AC voltmeter and an oscilloscope. Have you tried the fax machine on another port besides 24? Just for test purposes, you might try it. It could be one port or the module, other than TTT's posts on previous threads concerning this subject...

....JIM....

 

[TyMad]

Well now my boss just informed me that AT&T determined our phone system is not transmitting a "goodbye" message to the phone lines, thereby keeping the call active after it is hung up. Any ideas there?

Also, I did test a fax on another extension and had same problem.

 

[CarGoSki]

Loop start lines on copper from Telco or emulated loop start lines from an IAD or channel bank?

If so then the low voltage issues could originate there. Also you can change the trunk port as a test and you can hook the fax machine directly to the line. Naturally TTT probably already covered all of those items.

 

[TyMad]

I have already hooked the fax machine directly to a line on the AT&T box and it seemed to work just fine. I'm not really a phone expert or anywhere near. This is first time I've had to mess with a phone system like this and I was pretty much learning as I went..reading the manual. I have no idea what the loop start lines and channel banks are..

Guess it's time to call a local vendor to come look at the system that actually knows what they are doing.

 

[Dexman]

Loop start lines are your basic telephone lines (think of the phone line in a typical house).

I "FEATURE 00

 

[TyMad]

Ah gotcha, well we just had a service guy come out and he said our analog lines from the AT&T router were only putting out about half the voltage as they should. He said AT&T has been having major issues with T lines in our area lately