Toll free question 3 beeps and disconnect 1

[ta3jbm]

I have a toll free number with AT&T coming in through 2 Aspect switches in different parts of the country and have been seeing the following issue with increasing frequency. Customer is on a call with an agent and both hear 3 beeps and the call is disconnected. Anyone know what is causing this?

 

[skip555]

what does at&t sat about it

 

[ta3jbm]

AT&T keeps trying to point to the LEC but the problem is happening in many different locations nationwide.

 

[jgideon]

Could the calls be coming from a payphone that has a time limit? Do you have take-back-and-transfer on these lines that could be keying on caller voice harmonics? (odd, but does happen) Do your agents use headsets that have amplifies with batteries (that could be running low, beeping, and disconnecting?)

 

[ta3jbm]

The problem turned out to be the Viking 1900 series phones that are used with this toll free number. These phones are factory programmed to beep 3 times and disconnect if any DTMF tones are heard after the preprogrammed speed dialing.

 

[jgideon]

Thanks for updating with a resolution--that's a new one for me, so I'm glad to know about it!