Now in order to test the DTMF Pass-Thru. I press some digits on Phone1 and hear an on-going tone on phone2.This on-going tone(peeeeeeeeeeeeeeeep) , later digit presses are not heard on phone2. This on-going tone gets lost only if i hang-up.
On the other hand if i perform the same process in reverse order i.e. from phone2 to phone1 things work just fine. i hear multiple tones, each time i press a new digit.
The ios version which I am using is the latest available for this model as5300 c5300-is-mz.123-24a.bin which does include DTMF Feature supports over SIP.
I correct configuration as far as i know. I have searched the web for 2 days and all references told me to use this config. Here it is:
somehow sip-notify is not available although I am using the latest version of ios available for 5300 c5300-is-mz.123-24a.bin
But cisco docu says sip-notify and all options other than rfc can only be used in pure cisco environment, and in case a third party device is used one has to use rfc when using sip. Or am I wrong in my perception?
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