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Difference between 2801 and 2811 with VIC2-2BRI NT/TE

Hi,

I have problem with VIC2-2BRI NT/TE interface card which is install on router 2801.

After some idle period, link on that card goes down, and only inbound call can wake it up.

If I try to make outbound call, it doesn't work.

This is BRI configuration:

interface BRI0/0/0

no ip address

isdn switch-type basic-net3

isdn tei-negotiation first-call

isdn point-to-point-setup

isdn incoming-voice voice

isdn static-tei 0

isdn skipsend-idverify

When I put command: isdn layer1-emulate network, on BRI interface, it works ok, but I hear some kind of clock during the call.

If I do everything like this on router 2811, it works perfectly, with no clock signal to hear, and link is up.

interface BRI0/0/0

no ip address

isdn switch-type basic-net3

isdn tei-negotiation first-call

isdn point-to-point-setup

isdn layer1-emulate network

isdn incoming-voice voice

isdn static-tei 0

isdn skipsend-idverify

Any idea?

Thanks.

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