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New Member

Basic Rate ISDN problems

Hi All, Wondering if someone can spot any issue swith the config below. Basically it's a 2821 with 4 BRI ports controlled via MGCP from callmanger 7.X. I am sure I am right but I need to make sur ethat the TEI negotiation would occur whatever the callmanager config - the ports themselves have registered with CCM.

no aaa new-model
network-clock-participate wic 2
network-clock-participate wic 3
dot11 syslog
!
!
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 10.114.16.245 10.114.16.254
!
ip dhcp pool IPT-Phones
   network 10.114.16.0 255.255.255.0
   default-router 10.114.16.251
   option 150 ip 10.112.14.1 10.112.14.2
!
!
multilink bundle-name authenticated
!
isdn switch-type basic-net3
!
voice-card 0
no dspfarm
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
  hidekeys
!
!
!
!
!
!
interface GigabitEthernet0/0
description Link to switch fa 1/0/7
backup interface GigabitEthernet0/1
ip address 10.114.16.251 255.255.255.0
duplex full
speed 100
!
interface GigabitEthernet0/1
description backup Link to switch fa 5/0/1
ip address 10.114.16.251 255.255.255.0
duplex full
speed 100
standby 0 mac-address 2893.fef8.7100
!
interface BRI0/2/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn bind-l3 ccm-manager service mgcp
!
interface BRI0/2/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn bind-l3 ccm-manager service mgcp
!
interface BRI0/3/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn bind-l3 ccm-manager service mgcp
!
interface BRI0/3/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn bind-l3 ccm-manager service mgcp
!
ip default-gateway 10.114.16.254
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 10.114.16.254
!
!
ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
!
voice-port 0/2/0
compand-type a-law
cptone GB
!
voice-port 0/2/1
compand-type a-law
cptone GB
!
voice-port 0/3/0
compand-type a-law
cptone GB
!
voice-port 0/3/1
compand-type a-law
cptone GB
!
ccm-manager fallback-mgcp
ccm-manager redundant-host 10.112.14.1
ccm-manager mgcp
ccm-manager music-on-hold
ccm-manager config server 10.112.14.1 
ccm-manager config
!
mgcp
mgcp call-agent 10.112.14.2 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode cisco
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
mgcp package-capability rtp-package
mgcp package-capability sst-package
mgcp package-capability pre-package
no mgcp package-capability res-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp rtp payload-type g726r16 static
!
mgcp profile default

errors from debig ISDN Q921

*Aug  4 14:30:18.015: ISDN BR0/2/0 Q921: User TX -> IDREQ ri=22580 ai=127
*Aug  4 14:30:23.527: ISDN BR0/3/1 Q921: User TX -> IDREQ ri=56181 ai=127
*Aug  4 14:30:23.551: ISDN BR0/3/0 Q921: User TX -> IDREQ ri=37574 ai=127
*Aug  4 14:30:23.551: ISDN BR0/2/1 Q921: User TX -> IDREQ ri=48935 ai=127
*Aug  4 14:30:24.031: ISDN BR0/2/0 Q921: User TX -> IDREQ ri=45464 ai=127
*Aug  4 14:30:25.527: ISDN BR0/3/1 Q921: User TX -> IDREQ ri=51993 ai=127
*Aug  4 14:30:25.551: ISDN BR0/3/0 Q921: User TX -> IDREQ ri=31914 ai=127
*Aug  4 14:30:25.551: ISDN BR0/2/1 Q921: User TX -> IDREQ ri=18251 ai=127
*Aug  4 14:30:26.031: ISDN BR0/2/0 Q921: User TX -> IDREQ ri=48124 ai=127
*Aug  4 14:30:27.527: ISDN BR0/3/1 Q921: User TX -> IDREQ ri=31677 ai=127
*Aug  4 14:30:27.551: ISDN BR0/3/0 Q921: User TX -> IDREQ ri=14222 ai=127
*Aug  4 14:30:27.551: ISDN BR0/2/1 Q921: User TX -> IDREQ ri=45167 ai=127
*Aug  4 14:30:28.031: ISDN BR0/2/0 Q921: User TX -> IDREQ

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: Basic Rate ISDN problems

I'm assuming that 'sh isdn st' shows L2 not up, right?

Do you know how your provider is provisioned as far as the TEI goes?  Are they doing a dynamic or static TEI?  Half the time, you usually need to add this:

isdn static-tei 0

-Steve

3 REPLIES
Cisco Employee

Re: Basic Rate ISDN problems

I'm assuming that 'sh isdn st' shows L2 not up, right?

Do you know how your provider is provisioned as far as the TEI goes?  Are they doing a dynamic or static TEI?  Half the time, you usually need to add this:

isdn static-tei 0

-Steve

New Member

Re: Basic Rate ISDN problems

They would normally be dynamic but I'l give it a go.

Thanks very much

New Member

Re: Basic Rate ISDN problems

Hi Steve, Yep that was the fix - thanks very much. Afterwards I

remembered I had to do something similar about 10 years ago but forgot about it as we don't do much of that stuff nowadays.

Thanks

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