No ringback for calls from cell phones

1 Oct 2013

      Hi,

I am using FreesWITCH with Sangoma 102 and E1 connection. When I make a
call from a fixed number to one of the internal extensions, ringback can be
heard on the fixed number. However, when I make a call from a cell phone,
although the internal extension rings, I cannot hear any ringing on the
cell phone. I have tried two different mobile phone operators, but the
result is the same. I have tried specifying the channel variables such as
ringback and transfer_ringback int he dialplan, but doesn't help.

Any pointers on how to debug this? Could it be the telco, in between the
cell phone operators and FS,  causing this?

Thanks!

Siri MM

Andrew Cassidy

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