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ISDN 64k problem

I have a cisco 7500 router configured with a T1 pri to a private Definity pbx. I can dial out at 64k but can only receive calls at 56k. There is still a question as to whether it is the router or the pbx, both configurations seem pretty straight forward. What are we missing?

1 REPLY
VIP Purple

Re: ISDN 64k problem

Make sure the isdn-switch type that you are using is appropriate.

Ask your PABX engineer if the PABX can make outbound 64kb/s calls.

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