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  1. cwknight

    SIP across private p-p T1 with Adtran 3200 routers

    I'm trying to run Altigen IP710 phones and/or AltiView with IPTalk across a point to point T1 that has Adtran NetVanta 3200 routers on it. I've disabled the firewall and removed the SIP helper in the NetVanta, and I can log in the phone and the AltiView, but I can't initiate nor receive, so the...

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