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3CX and Sprint

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jwarrenr6

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has anyone had any issues using SIP over Sprint?

My 3cx on my iphone 4S works fine over wifi, but does not register when connected to the Sprint 3G network

Any ideas?

James
 
If you are using as an extension off the 3CX PBX, have you tried using the Tunnel option?

I don't recall reading anything about Sprint blocking VoIP.
 
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