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7921 used with ISDN (1721 router)

Im experimenting with a 1721 router. Does anyone know if i can make the 7921/7920 wireless ip phones work to use Voip over isdn? If so could anyone point me in the right direction to making it all work.

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Re: 7921 used with ISDN (1721 router)

Voip over ISDN a bit of strech, but possible. Configure G.729 codec for that.

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