unable to dial out or receive call CUCM 8.6

[Rajesh Jain]

Hi i am new to cisco, just learning, we had cucm 8.6 implemented with 7942 phones. today we are unable to dial out.  when we pick up the handset we get the dialtone, when we press the out going line that is 8 for us we get the outgoing dialtone, but when we try to dial out any outside numbe rwe get a busy tone.  and when someone tries to call our main number it says " Unable to dial at this time please try again later".. internal extension to extension is working fine.

please help dont know where to look.  already restarted the CUCM 8.6 but still no luck.

phones registered fine post restart.

Thanks

Raj                  

[bouwman22]

Various things. Check CSS. Check the route pattern your dialing. Run a debug on the gateway What kind of connectivity to PSTN? FXO? PRI? SIP?

[Rajesh Jain]

Hi we have a PRI, i have checked the CSS and route pattern they are fine. everything was working fine suddenly we started getting busy.

[ericdolton · Accepted solution]

What type of signaling are you using for the voice gateway in which the PRI is connected? MGCP or H323. 

issue the following command on the gateway

show isdn status

You should see the state as follows:

State = MULTIPLE_FRAME_ESTABLISHED

If not you have a cabling issue or your provider is having a circuit issue. 

[Rajesh Jain]

It was a provider related issue they just confirmed, they had an outage at their CO.

Thanks

[mika2006nsu]

can some one help I did that and this is what I see

CR2951-1#sh isdn status
Global ISDN Switchtype = primary-ni

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

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

[Jaime Valencia]

Layer 1 is down, make sure the controller is not shutdown, and that a live circuit is connected to the port. If all checks out OK, then do a loopback test to make sure the port is not at fault.

[mika2006nsu]

Yes i did a sh isdn status and it says, how do I get it back up im new to this thanks

Global ISDN Switchtype = primary-ni

%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-ni
        L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003
    Layer 1 Status:
        SHUTDOWN
    Layer 2 Status:
        TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x00000000
    Number of L2 Discards = 0, L2 Session ID = 1
    Total Allocated ISDN CCBs = 0