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9608 DTMF Issues on PRI

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twitchy087

Vendor
Dec 20, 2011
144
US
Hello,

I have a 10.1.5 IP500v2 with a PRI and 9608G phones. The 500v2 has a combo card, VCM32 and a PRI daughter card. I am troubleshooting an issue where DTMF tones are not working only when making outbound calls via the 9608s. DTMF works fine when using a butt set in an analog station and when forwarding calls via the incoming call routes. With the 9608, you can press the tone and there is a pause as though the tone is recognized but it never works.

It has been found that the DTMF tones seem to work when you call from the 9608 and conference a third party into the call. So 9608 --> B does not work but 9608 --> B and C does work. It is totally bazaar and I am honestly running out of options here..

The PRI, combo and VCM cards were all swapped without any success.

Any ideas?
 
Can you put the call on hold then pick it up immediately to enter DTMF tones again, without conferencing a third party?
 
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