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CFwdALL failing when forwarding an IP 7940 to a t-mobile cell phone.

Unanswered Question
Aug 7th, 2013
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We are having issues forwarding our IP phones to a T-mobile cell phone. Other cell carriers i.e. Sprint, Verizon and MetroPCS work fine. The calls forwarded to T-mobile will sometimes connect and the caller will get dead air. If you dial the IP phone's internal extension it works but if you dial the 10 digit number i.e. off network it fails. Any suggestions?                 

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mmoulson1 Thu, 08/08/2013 - 06:51
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Maybe a codec issue?


We had a problem recently when setting up a new SIP trunk for PSTN connectivity. Some cell providers connected fine others would fail.


Could you give more information around your setup?


Regards

Matty

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