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Connection to 3G of AT&T

Discussion in 'Windows' started by EPLAN-User, Jan 29, 2013.

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  1. EPLAN-User

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    Dear Members,
    I'm new in this community and I have immediate a question. Hope somebody finds an answer.
    I installed the 3CX on my iphone. After 2 h of setting and tweaking with all of the SIP Server Setting and so on I finally get the phone running. works pretty well -only in WLAN-
    Now to my question. I get contact only if I'm in the WLAN. If I use the 3G connection of AT&T here in the US I get no connection. 3CX logs in and get connected but if I try to do a call no connection.
    Are there any specifc settings necessary or does AT&T not allow to do VOIP. T-Mobile however doesn't let me in at all....
    Thanks for answers
    Greetings
    J.
     
  2. leejor

    leejor Well-Known Member

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    I seem to recall that at&t users were having a problem using VoIP , in the past, over 3G. I'm not sure if that was ever resolved. Hopefully a current at&t user can provide an update.

    You might also do a search on the net about any restrictions that at&t put on VoIP services.
     
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