Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Community Member

CUCM to Tetra Interface by Qsig

Hi,

 

We have recently configured Qsig on 2951 router and CUCM to interface between CUCM 9.1 to Tetra system using MTIG (Motorola Telephone Interconnect Gateway).

Seems the connection establish but we unable to see any Layer 2 frame exchanged Such as TEI and SPID are 0. Can anyone suggest what could be issue?

    Layer 2 Status:
        TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

Below is the Configuration and output for review.

 

card type e1 0 0
!
no aaa new-model
network-clock-participate wic 0

isdn switch-type primary-qsig

controller E1 0/0/0

  pri-group timeslots 1-31 service mgcp

interface Serial0/0/0:15
 no ip address
 encapsulation hdlc
 logging event link-status bchan
 isdn switch-type primary-qsig
 isdn protocol-emulate network
 isdn incoming-voice voice
 isdn bind-l3 ccm-manager
 no fair-queue
 no cdp enable

 

ccm-manager redundant-host 172.x.x.x
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
ccm-manager config server 172.x.x.x
ccm-manager config

mgcp
mgcp call-agent 172.x.x.x 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
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 validate call-agent source-ipaddr

mgcp profile default

dial-peer voice 1 pots
 service mgcpapp
 port 0/0/0:15
!

 

Outputs are below,

ORB3VGW1#sh isdn status
Global ISDN Switchtype = primary-qsig

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

ISDN Serial0/0/0:15 interface
        ******* Network side configuration *******
        dsl 0, interface ISDN Switchtype = primary-qsig
         **** Master side configuration ****
        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:  0xFFFF7FFF
    Number of L2 Discards = 0, L2 Session ID = 1
    Total Allocated ISDN CCBs = 0

BORB3VGW1#sh isdn service
PRI Channel Statistics:

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

ISDN Se0/0/0:15, Channel [1-31]
  Configured Isdn Interface (dsl) 0
   Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
    Channel :  1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    State   :  0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)
    Channel :  1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    State   :  0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0


BORB3VGW1#sh cont e1 0/0/0
E1 0/0/0 is up.
  Applique type is Channelized E1 - balanced
  No alarms detected.
  alarm-trigger is not set
  Version info Firmware: 20100222, FPGA: 13, spm_count = 0
  Framing is CRC4, Line Code is HDB3, Clock Source is Internal.
  Data in current interval (447 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 1:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
  Data in Interval 2:
     1286 Line Code Violations, 8 Path Code Violations
     1 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 97 Unavail Secs
  Data in Interval 3:
     0 Line Code Violations, 0 Path Code Violations
     1 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 714 Unavail Secs
  Total Data (last 3 15 minute intervals):
     1286 Line Code Violations, 8 Path Code Violations,
     2 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
     2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 811 Unavail Secs

BORB3VGW1#sh int se 0/0/0:15
Serial0/0/0:15 is up, line protocol is up (spoofing)
  Hardware is DSX1
  MTU 1500 bytes, BW 64 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, loopback not set
  Keepalive set (10 sec)
  Last input 00:00:02, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     330 packets input, 1631 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     330 packets output, 2125 bytes, 0 underruns
     0 output errors, 0 collisions, 3 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     1 carrier transitions
  Timeslot(s) Used:16, SCC: 0, Transmitter delay is 0 flags

Thank You

Regards

Raj

2 REPLIES

Hi Raj Your configuration ,

Hi Raj

 

Your configuration , and output is very well. The most important thing that MULTIPLE_FRAME_ESTABLISHED appear under L2 . A SAPI is a Service Application endPoint ID.  So the fact that you show two SAPIs (0 and 1) under  TEI would be driven by your equipment/configuration.  Several of these probles exist on the telco switch side of things, so it's a safe start to blame them.    But in the future the "debug isdn q921" will help a lot with that. For more information kindly check the below link:-

http://www.cisco.com/c/en/us/support/docs/wan/t1-e1-t3-e3/14164-e1-flchrt-pri.html?referring_site=smartnavRD

 

Thanks

Please rate all useful information
 

Community Member

Hi Kamal, Thank you for reply

Hi Kamal,

 

Thank you for reply 

Yes, I did debug as well but i could not any frames. Other side (Tetra MTIG) can work with other Vendor Pabx. 

Regards

S.Rajkumar

 

499
Views
0
Helpful
2
Replies
CreatePlease to create content