01-15-2009 07:56 AM - edited 03-15-2019 03:32 PM
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 t1
T1 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 Secs
T1 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 Secs
2851-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!
Solved! Go to Solution.
01-15-2009 09:37 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
01-15-2009 07:56 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 nd
ip route 0.0.0.0 0.0.0.0 10.100.2.1
!
!
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip 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 10.100.2.20
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
ccm-manager config server 10.100.3.20
!
mgcp
mgcp call-agent 10.100.3.20 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp modem passthrough voip mode nse
no mgcp timer receive-rtcp
mgcp fax t38 inhibit
mgcp bind control source-interface GigabitEthernet0/0
mgcp bind media source-interface GigabitEthernet0/0
!
mgcp profile default
!
sccp local GigabitEthernet0/0
sccp ccm 10.100.2.20 identifier 3 version 4.1
sccp ccm 10.100.4.20 identifier 2 version 4.1
sccp ccm 10.100.3.20 identifier 1 version 4.1
sccp
!
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 0/0/0:23
Thanks.
01-15-2009 09:37 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
01-15-2009 10:21 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!
01-15-2009 10:38 AM
Slips will do a number on faxing :)
Glad I could help.
-nick
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