I have a small business with an analog Panasonic Kx-TES 824 pbx. We have installed 2 ATAs (Linksys sp2102), so can have 4 concurrent calls. While dialing out and receiving calls is fine, for incoming calls, when the dialer dials a tone to select a department from the auto attendant, the Panasonic fails to pick up the dial tone. This is frustrating as it then makes all the extension phones ring when it has timed out due to it thinking the caller has failed to dial a tone. When I call my company and simulated the dial tones myself, they sound scratchy and not as smooth as the good old copper lines. Are there settings I need 2 talk to adjust? Please advise.
Hmm thats a bit strange. Normally it is the other way around.
Maybe just check that your ATA is using RFC2833 for DTMF and also be sure you aren't on 2talk's old platform - just make sure it is registering to 'sip.2talk.co.nz'. The old platform had issues with dtmf often.
The only other thing I can think of is the Panasonic isn't listening for dtmf. But I assume this was working on the standard POTS lines so that should already be set up. I will have a look through my panasonic book for other dtmf related settings tomorrow and post up if I find anything helpful.
My only other recommendation is get a new PABX and terminate the SIP trunks natively ;-)