Cisco to Nortel PRI connection

Cisco CallManager, Cisco CallManager Express and IP Video
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Cisco to Nortel PRI connection

Post by Guest » Tue Mar 28, 2006 4:40 am


We are in the process of installing Call Manager.  We have a 2851 gateway with a VWIC2-2MFT-T1/E1 card in it that is connecting to a Nortel Option 81.  All external incoming and outgoing calls go over this connection.  The Nortel is providing the clocking.  When my Nortel guy looks at his card, he shows no errors, says everything looks great.  When my Cisco guy looks at the the Cisco card, we see slip errors consistently happening.2851-cch1-vg#sh controllers t1T1 0/0/0 is up.  Applique type is Channelized T1  Cablelength is long 0db  No alarms detected.  alarm-trigger is not set  Soaking time: 3, Clearance time: 10  AIS State:Clear  LOS State:Clear  LOF State:Clear  Version info Firmware: 20071011, FPGA: 13, spm_count = 0  Framing is ESF, Line Code is B8ZS, Clock Source is Line.  CRC Threshold is 320. Reported from firmware  is 320.  Data in current interval (525 seconds elapsed):     0 Line Code Violations, 0 Path Code Violations     48 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins     48 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs  Total Data (last 2 15 minute intervals):     0 Line Code Violations, 0 Path Code Violations,     170 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,     170 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail SecsT1 0/0/1 is up.  Applique type is Channelized T1  Cablelength is long 0db  No alarms detected.  alarm-trigger is not set  Soaking time: 3, Clearance time: 10  AIS State:Clear  LOS State:Clear  LOF State:Clear  Version info Firmware: 20071011, FPGA: 13, spm_count = 0  Framing is ESF, Line Code is B8ZS, Clock Source is Line.  CRC Threshold is 320. Reported from firmware  is 320.  Data in current interval (525 seconds elapsed):     0 Line Code Violations, 0 Path Code Violations     50 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins     50 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs  Total Data (last 2 15 minute intervals):     0 Line Code Violations, 0 Path Code Violations,     168 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,     168 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs2851-cch1-vg#Now, the connection is active and calls are going across.  The problem is, some faxes and some phone calls have issues and I believe they are related to the errors on the PRI.  All faxes and phone calls that stay internal to the Call Manager have zero issues.I will post the config of the router in a reply to this message since it exceeds max msg length.Has anyone had any experience with Cisco to Nortel connections and troubleshooting these types of errors?Thanks!

Guest

Re:Cisco to Nortel PRI connection

Post by Guest » Tue Mar 28, 2006 5:39 am


Here is the pertinent part of the config on the 2851:!controller T1 0/0/0 framing esf linecode b8zs cablelength long 0db pri-group timeslots 1-24 service mgcp!controller T1 0/0/1 framing esf linecode b8zs cablelength long 0db pri-group timeslots 1-24 service mgcp!!!!!!interface GigabitEthernet0/0 description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$ ip address 10.100.2.26 255.255.255.0 duplex auto speed auto!interface GigabitEthernet0/1 no ip address shutdown duplex auto speed auto!interface Serial0/0/0:23 no ip address encapsulation hdlc isdn switch-type primary-dms100 isdn incoming-voice voice isdn bind-l3 ccm-manager isdn channel-id invert extend-bit no cdp enable!interface Serial0/0/1:23 no ip address encapsulation hdlc isdn switch-type primary-dms100 isdn incoming-voice voice isdn bind-l3 ccm-manager isdn channel-id invert extend-bit no cdp enable!ip forward-protocol ndip route 0.0.0.0 0.0.0.0 10.100.2.1!!ip http serverip http access-class 23ip http authentication localip http secure-serverip http timeout-policy idle 60 life 86400 requests 10000!!!!!control-plane!!!voice-port 0/0/0:23!voice-port 0/0/1:23!ccm-manager redundant-host 10.100.4.20 10.100.2.20ccm-manager mgcpno ccm-manager fax protocol ciscoccm-manager music-on-holdccm-manager config server 10.100.3.20!mgcpmgcp call-agent 10.100.3.20 service-type mgcp version 0.1mgcp dtmf-relay voip codec all mode out-of-bandmgcp modem passthrough voip mode nseno mgcp timer receive-rtcpmgcp fax t38 inhibitmgcp bind control source-interface GigabitEthernet0/0mgcp bind media source-interface GigabitEthernet0/0!mgcp profile default!sccp local GigabitEthernet0/0sccp ccm 10.100.2.20 identifier 3 version 4.1sccp ccm 10.100.4.20 identifier 2 version 4.1sccp ccm 10.100.3.20 identifier 1 version 4.1sccp!sccp ccm group 1 associate ccm 3 priority 3 associate ccm 2 priority 2 associate ccm 1 priority 1 associate profile 2 register cch-tra-1 associate profile 1 register cch-cfb-1!dspfarm profile 2 transcode codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 maximum sessions 2 associate application SCCP!dspfarm profile 1 conference codec g711ulaw codec g711alaw codec g729ar8 codec g729abr8 codec g729r8 codec g729br8 maximum sessions 18 associate application SCCP!!dial-peer voice 1 pots service mgcpapp port 0/0/0:23Thanks.

Guest

Re:Cisco to Nortel PRI connection

Post by Guest » Tue Mar 28, 2006 6:20 am


Hi Keith,Actually you may have missed the pertinent part:You will need 'network-clock-select 1 t1 0/0/0'Try this command, 'clear counters' (exec), and see if this helps.hth,nick

Guest

Re:Cisco to Nortel PRI connection

Post by Guest » Tue Mar 28, 2006 7:38 am


Yes, that appears to have been quite pertinent.  I put that command in, cleared the counters, and monitored the controllers for 15 minutes.  No new errors have appeared.  In addition, I have sent approximately 20 pages of faxes between the Nortel and Cisco systems and none of them had any visible errors.  Thank you!

Guest

Re:Cisco to Nortel PRI connection

Post by Guest » Tue Mar 28, 2006 9:09 am


Slips will do a number on faxing :)Glad I could help.-nick

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