I can confirm this - when calling tollfree to TELLME on 1800 555 8355, the only way I can get the DTMF to work is via voipuser.org, it doesn't work via other providers including sipbroker/voxalot. Other services such as UK 0800 work fine. I read another post somewhere and it is a common problem - someone mentioned having to change settings for different numbers, can't voxalot look after this for us on the server - transcoding the DTMF tones so they are compatible if that is the problem?
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