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Cisco Bug: CSCvr99967 - Telepresence ISDN GW not advertising any DTMF method on signalling

Last Modified

May 20, 2020

Products (1)

  • Cisco TelePresence ISDN Gateway

Known Affected Releases

2.2(1.128)

Description (partial)

Symptom:
Telepresence ISDN GW not advertising any DTMF method on signalling

Conditions:
- Telepresence ISDN GW not advertising any DTMF method.
- ISDN GW DTMF working can receive Raw inband DTMF.
- ISDN GW DTMF working can receive RFC2833 in case the ISDN GW set to Auto attendant Mode only.
- Advertise out-of-band DTMF (telephone and auto attendant)	check box on the configuration : means the DTMF can be received as RFC2883 not KPML .
- in case of Cisco IP Phone ( like 88XX ) the DTMF will be sent as KPML or RFC 2833 where the ISDN GW will not got it (unless it set to Auto attendant mode it will accept RFC2833).
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