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Problem with PRI tones

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March71

Technical User
Joined
Feb 16, 2006
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46
Location
US
Has anyone ever had this problem before?

The system is an opt 11 with 4 tmdi pris. everything is working fine for over a year up until a couple of days ago when the customer started to complain that -

When they make an ougoing call to an automated service, the service cannot recognize their dtmf tones. for example, when they are told to press 1 to reach customer service - the customer presses 1 but the other end does not "see" it. i've cold started the opt 11, pulled out/rolled the cards, but still to no avail. checked for errors on the pri, everything is clean. just for fun, i installed a universal trk card and then hooked up a fax line to it, it works!

I've also tried calling a live person on the other end. I hear the tones when he presses his keypad, on the otherhand, he can't hear mine. is something blocking it?

Telco already did an intrusive test (whatever that is?!) came back and said pris are ok.

Any ideas? i'm stumped!
 
that tone comes from the dtr card and is a digital signal on the pri, not a tone.. the opt ll dtr is built on the ssc card stat 0 and you should see 8 dtr's.. might just be a single channel or you may need the card

john poole
bellsouth business
columbia,sc
 
There are a few times I've seen a related issue. For example, if you have a party on the lime and then use NHC to "add on" a menu, the desination does not seem to give an answer signal and it never becomes a 3 way call. If you call it directly as a one part call it will work...but why not on NHC??

Trivia: AO as in Add On is what the AO in AO6 means for those interested.


~
 
Trivia: AO as in Add On is what the AO in AO6 means for those interested.

Conference 6 party but what does the AO stand for?
 
Thanks for the trivia GHTROUT......AO3 and AO6 ... was wondering why these were conference features.
 
thanks john, i did a stat on the dtrs and they came back as idle. thay are idle before and after i rebooted the system. any more ideas? please!
 
test your dtr's one of them is bad.. test each one is ld 34. a reboot never helps... 1 out of a 1000 times..

john poole
bellsouth business
columbia,sc
 
Is this happening only when calling one particular service? Can you call other external auto-attendants and dial through okay?
As ghtrout suggested it may be that the destination is not providing answer supervision. I've seen this with some long-distance card services.
DTR's are not a factor in this case. DTR's are only used when an analog phone goes off-hook to make a call. They don't get used for digital sets. Once the call has received answer supervision, or the end-of-dial timer expires, the DTR drops out of the picture.
If your call is going out on an analog trunk or DTI route (rather than a PRI) then it may be that the end-of-dial timer has NOT expired and the system is not passing the DTMF to the destination. You can overcome that by pressing # after dialing the destination number,
 
Thanks guys for all your suggestions!
 
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