MGCP between CallManger 4.2(3) and Gateway 2851 with 5 E1s B-ch OOS

Unanswered Question


I have some problems between CallManager 4.2(3) and gateway 2851 with 5 E1s, I see that the gateway register to CallManager but I receive alarms on the EVENT VIEWER of the CCM that all E1s that the b-channel out of service, also there is an Transient connection attempt with the following explanation:

A conection was established and immediately dropped before completion registration. Incomplete registration may indicate a device is rehoming in the middle of registration.

Here is a show ccm, where you can see the registration ok:

MGCP1_GW#show ccm

MGCP Domain Name:

Priority Status Host


Primary Registered

First Backup None

Second Backup None

Current active Call Manager:

Backhaul/Redundant link port: 2428

Failover Interval: 30 seconds

Keepalive Interval: 15 seconds

Last keepalive sent: 17:17:14 GUATE Sep 29 2008 (elapsed time: 00:00:36)

Last MGCP traffic time: 17:17:50 GUATE Sep 29 2008 (elapsed time: 00:00:00)

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

Backhaul Link info:

Link Protocol: TCP

Remote Port Number: 2428

Remote IP Address:

Current Link State: OPEN


Packets recvd: 26067

Recv failures: 0

Packets xmitted: 33114

Xmit failures: 0

PRI Ports being backhauled:

Slot 0, port 0

Slot 0, port 1

Slot 0, port 0

Slot 0, port 1

Slot 0, port 0

Configuration Auto-Download Information


Current version-id: {C090D148-22AA-4CCC-B51E-5953CB68E64A}

Last config-downloaded:00:00:00

Current state: Waiting for commands

Configuration Download statistics:

Download Attempted : 16

Download Successful : 16

Download Failed : 0

Configuration Attempted : 8

Configuration Successful : 8

Configuration Failed(Parsing): 0

Configuration Failed(config) : 0

Last config download command: New Registration

Configuration Error History:

controller E1 0/2/0no pri-group timeslots 1-31

controller E1 0/1/1no pri-group timeslots 1-31

controller E1 0/1/0no pri-group timeslots 1-31

controller E1 0/0/1no pri-group timeslots 1-31

controller E1 0/0/0no pri-group timeslots 1-31

FAX mode: cisco





Walter Flores

I have this problem too.
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iptuser55 Tue, 09/30/2008 - 23:45

How many E1/T1 do you have working in the router, It could be that the config. in the CCM shows the other spare controllers but they are not configured.It seems that the router is trying to register all the controllers


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