MGCP gateway won't register

[Evan Ray]

So I've posted up another thread about one of my serial interfaces having an issue, and I wanted to swap out the router.  But I'm unable to get the MGCP gateway to register.  The status is UNKNOWN.  I can see the IP address of the router under the list of gateways, but status states unknown.  I've searched high and low online about what causes this, but I've seen many threads left to die with no resolution.  Any ideas as to what causes the unknown status.  I've configured everything the same as the old router, and made sure to change the name of the router accordingly.  Any thoughts?

[Evan Ray]

Sure Brian!! Thanks for jumping on to help!! Much appreciated!

sh isdn status
Global ISDN Switchtype = primary-4ess

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply

ISDN Serial0/2/0:23 interface
        dsl 0, interface ISDN Switchtype = primary-4ess
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003
    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:  0x807FFFFF
    Number of L2 Discards = 0, L2 Session ID = 0

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 1. Layer 3 output may not apply

ISDN Serial0/2/1:23 interface
        dsl 1, interface ISDN Switchtype = primary-4ess
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 1 CCBs = 0
    The Free Channel Mask:  0x00000000
    Number of L2 Discards = 0, L2 Session ID = 1

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 2. Layer 3 output may not apply

ISDN Serial0/3/0:23 interface
        dsl 2, interface ISDN Switchtype = primary-4ess
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003
    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 2 CCBs = 0
    The Free Channel Mask:  0x807FFFFF
    Number of L2 Discards = 0, L2 Session ID = 1

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 3. Layer 3 output may not apply

ISDN Serial0/3/1:23 interface
        dsl 3, interface ISDN Switchtype = primary-4ess
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003
    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 3 CCBs = 0
    The Free Channel Mask:  0x807FFFFF
    Number of L2 Discards = 0, L2 Session ID = 1
    Total Allocated ISDN CCBs = 0

sh run | sec controller
controller T1 0/2/0
 framing esf
 clock source internal
 linecode b8zs
 cablelength long 0db
 pri-group timeslots 1-24 service mgcp
controller T1 0/2/1
 framing esf
 clock source internal
 linecode b8zs
 cablelength long 0db
 pri-group timeslots 1-24 service mgcp
controller T1 0/3/0
 framing esf
 clock source internal
 linecode b8zs
 pri-group timeslots 1-24 service mgcp
controller T1 0/3/1
 framing esf
 clock source internal
 linecode b8zs
 pri-group timeslots 1-24 service mgcp

[Brian Meade]

It looks like a possible RIS database issue since everything from the gateway side seems to show registered and backhaul channel is up.

Can you make calls successfully?

You may have to restart the RIS Data Collector service on your CUCM nodes to get the webpage to show the correct registration status.

Can you run "show risdb query gateway" from the 192.168.111.6 node?

[Evan Ray]

No I get a fast busy. I don't believe I have a RIS Data Collector.  Please keep in mind I'm running CCM 4.1 the old stuff :(