MGCP: ISDN L3 will not establish

Unanswered Question

Hi.

I have two 3640 routers with E1 modules installed, a back to back ISDN cable and can get ISDN L3 up and running OK.


when I change over to using MGCP I cannot get isdn L3 (multiple frames established) in show isdn status.


Below is the working output, then the MGCP non working output.

Thanks for any advice.


Regards

John


RTR_E_PSTN#show isdn status

Global ISDN Switchtype = primary-net5

ISDN Serial2/0:15 interface

******* Network side configuration *******

dsl 0, interface ISDN Switchtype = primary-net5

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x80FF7FFF

Number of L2 Discards = 0, L2 Session ID = 81

Total Allocated ISDN CCBs = 0


isdn switch-type primary-net5

!

controller E1 2/0

clock source internal

pri-group timeslots 1-24



interface Serial2/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn protocol-emulate network

isdn incoming-voice data

no cdp enable

!


RTR_A#show isdn status

Global ISDN Switchtype = primary-net5

ISDN Serial3/0:15 interface

dsl 0, interface ISDN Switchtype = primary-net5

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0x80FF7FFF

Number of L2 Discards = 0, L2 Session ID = 72

Total Allocated ISDN CCBs = 0




isdn switch-type primary-net5

controller E1 3/0

pri-group timeslots 1-24


interface Serial3/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn incoming-voice data

no cdp enable



------------------------

now use MCGP


ccm-manager config server 10.100.9.11

ccm-manager config


controller E1 3/0

pri-group timeslots 1-24 service mgcp

!

!

interface Serial3/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable




RTR_A#show ccm-manager

MGCP Domain Name: RTR_A

Priority Status Host

============================================================

Primary Domain Name Unresolvable Pub1

First Backup None

Second Backup None


Current active Call Manager: None

Backhaul/Redundant link port: 2428

Failover Interval: 30 seconds

Keepalive Interval: 15 seconds

Last keepalive sent: 09:40:43 GMT Nov 9 2009 (elapsed time: 01:01:37)

Last MGCP traffic time: 10:36:39 GMT Nov 9 2009 (elapsed time: 00:05:41)

Last failover time: None

Last switchback time: None

Switchback mode: Graceful

MGCP Fallback mode: Not Selected

Last MGCP Fallback start time: None

Last MGCP Fallback end time: None

MGCP Download Tones: Disabled

TFTP retry count to shut Ports: 2


Backhaul/Redundant link is down

Configuration Auto-Download Information

=======================================

Current version-id: 1257434168-47c77570-bea6-48ac-bdc7-ffcee28bf3fc

Last config-downloaded:00:00:00

Current state: Waiting for commands

Configuration Download statistics:

Download Attempted : 1

Download Successful : 1

Download Failed : 0

TFTP Download Failed : 0

Configuration Attempted : 1

Configuration Successful : 1

Configuration Failed(Parsing): 0

Configuration Failed(config) : 0

Last config download command: New Registration

Configuration Error History:

voice-port 3/0:15

echo-cancel coverage 8


controller E1 3/0

no pri-group timeslots 1-31


FAX mode: cisco






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Brandon Buffin Mon, 11/09/2009 - 06:44
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Your gateway is unable to contact and register with the Callmanager for some reason. Check connectivity between the gateway and CCM. Can you ping? Also, make sure the CCM configuration is correct for the gateway. Check the name - it should match the hostname on the gateway. Make sure it is configured for the correct type of interface.


Hope this helps.


Brandon

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