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Hi,

I have a Cisco 3725 here, with a VIC BRI NT/TE module installed. It has
two BRI ports (BRI 1/0 and BRI 1/1). I want to simply have an ISDN
phone plugged straight into each BRI port and make a call between the
two. I've tried everything I can think of, but not getting anywhere
fast.

I can get Layer 1, 2 and 3 up and get a dial tone on both phones, dial
the number and the dialpeer debugging shows that the number is
recognised and assigned to a dial-peer, then it lists "conected to
unknown" and the phone gets the busy tone.

I'm in the UK, so using "isdn switch type basic-net3" and A-law for the
voice ports. I've tried a number of different phone makes and models
including test phones. Every document I can find on Cisco about the
modules talks about it being connected to a PBX or PSTN, but nothing
about connecting isdn phones directly to the BRIs.

My config:

isdn switch-type basic-net3

interface BRI1/0
no ip address
isdn switch-type basic-net3
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
isdn skipsend-idverify
!
interface BRI1/1
no ip address
isdn switch-type basic-net3
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
isdn skipsend-idverify
!
!
!
!
interface Dialer0
no ip address
!
!
!
!
voice-port 1/0/0
compand-type a-law
cptone GB
!
voice-port 1/0/1
compand-type a-law
cptone GB
!
!
!
!
!
dial-peer voice 1 pots
destination-pattern 4000
port 1/0/0
!
dial-peer voice 2 pots
destination-pattern 4001
port 1/0/1

Can you see anything wrong with this?

Dialling 4002/4001 from the phones results in this when using "debug
dialpeer":

*Mar 6 08:58:34: //-1/2940353283B0/DPM/dpMatchCore: dialstring(4002);
expanded string(4002); calling()
*Mar 6 08:58:34: //-1/2940353283B0/DPM/MatchNextPeer: peer 2 matched
*Mar 6 08:58:34: //-1/2940353283B0/DPM/dpMatchPeersCore: Result=0
after DP_MATCH_DEST
22:46:07: %ISDN-6-CONNECT: Interface BRI1/0:1 is now connected to
unknown

This results in recieving the busy tone, even though the other phone is
firmly on the reciever. This happens trying from both phones. It is as
if it understands the number that is being input, matches it upto a
dial-peer then just routes it nothing, when all I want it to do is
route it to the other BRI port.
Any suggestions greatly welcoming.

Thanks,

Chris

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