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Beginner

Incorrect DTMF tones detected by remote phone system

We've been running CUCM 6.1 for a while now and haven't had any issues.  We recently have come across 1-2 auto attendants elsewhere that are detecting the wrong DTMF tones from us.  i.e. from multiple Cisco phones we are seeing:

Number dialed: 2101

Number detected: 2302

Number dialed: 2101

Number detected: 2701

Number dialed: 2101

Number detected:2203

I noticed that the H225 DTMF Duration Service parmater was set to 300ms.  I don't know the reason why this was increased from 100 to 300ms a while back.

I enabled debugging on our gateway and confirmed that it's receiving the correct digits and that the tone duration matches the H225 DTMF Duration timer value in CUCM.

Any idea on how we can correct this?

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Enthusiast

Re:Incorrect DTMF tones detected by remote phone system

Hi!

Could you please share the complete call flow? How is tgis H323 GW sending the digits out? PRI, SIP, FXO?

Is the issue only with certain numbers?

--

Jorge Armijo

Sent from Cisco Technical Support Android App

-- Jorge Armijo Please remember to rate helpful responses and identify helpful or correct answers.
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