Point to Point BRI Question

[ryancdavis]

I'm having to create an internal Bri point to point circuit.  Topology is:

1700 series router w/ ST BRI card ------ Straight through cable ----- Cisco 2921 w/ ST BRI card

Is this possible? Or do I need something else, such as NT1 device, etc.....

[Daniele Giordano]

Yes, you can do it.

One interface must be in NT mode and the other in TE.

NT mode example:

interface BRI1/1

no ip address

isdn switch-type basic-net3

isdn overlap-receiving T302 4000

isdn not-end-to-end 64

isdn protocol-emulate network

isdn layer1-emulate network

isdn incoming-voice voice

isdn send-alerting

isdn negotiate-bchan

isdn sending-complete

isdn static-tei 0

isdn skipsend-idverify

TE mode example:

interface BRI1/0

no ip address

isdn switch-type basic-net3

isdn overlap-receiving T302 4000

isdn not-end-to-end 64

isdn point-to-point-setup

isdn incoming-voice voice

isdn static-tei 0

isdn skipsend-idverify

Regards.

[paolo bevilacqua]

For that you need a crossed ISDN BRI cable, not straight.

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_configuration_example09186a008010ef6c.shtml