Hi,
We have setup a GSM gateway here at work and when any of our team rings in from there xt mobile we cant use DTMF tones, if we ring in from anywhere else (Voda Telecom landline, telstra, 2talk ) we can use DTMF tones.
Does anyone know if Telecom are blocking DTMF tones between two XT mobiles??
I have tested 2 Voda sims and it works fine
Thanks for any help
Nick