I have 3 SIP suppliers. 2Talk in New Zealand works fine. VoIP.ms in USA works fine. Alliance Call. The dtmf tones are not recognised by the IVR. Looking at the logs it appears that the keys are creating double digits. IE I depress 6 and the log show 66.
Can any one make a suggestion on how to over come this problem while not upsetting the other 2 SIP suppliers.
I’m currently using Alliance Call for tollfree numbers in UK and AU. They are rerouteing the calls in my case to SIP accounts. Alliance Call initially helped get their calls to work but that caused the VoIP.ms calls to fail.
One obvious option is to drop Alliance call, but I’d prefer not to unless there is no other alternative.