12-02-2003 06:55 AM - edited 03-02-2019 12:05 PM
I am trying to bring up a T1 PRI. I have the following config.
isdn switch-type primary-dms100
Controller t1 0/0
linecode b8zs
framing esf
pri-group timeslot 1 - 24
when i do a sh isdn status, layer 2 is showing
TEI - ASSIGNED, then it changes to awaiting-establishment, and then back to TE1 - ASSIGNED. Basically bouncing between these two states.
I am missing something..it should be showing multiple frame-established, right?
Thanks
12-02-2003 07:17 AM
Hello,
can you enable debugging for q.921 (debug isdn q921), then shut/no shut the T1 controller and post the output ?
Regards,
GP
12-02-2003 07:30 AM
Here is the Debug:
Router(config-controller)#shut
Router(config-controller)#no shut
Router(config-controller)#
*Mar 1 00:12:45.410: %CONTROLLER-5-UPDOWN: Controller T1 0/0, changed state to administratively d
*Mar 1 00:12:50.102: %CONTROLLER-5-UPDOWN: Controller T1 0/0, changed state to up
*Mar 1 00:12:50.106: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:12:51.108: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:12:52.109: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:12:53.111: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:12:59.113: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:00.114: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:01.116: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:02.118: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:08.119: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:09.121: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:10.123: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:11.124: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:17.126: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:18.128: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:19.129: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
*Mar 1 00:13:20.131: ISDN Se0/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
Router#un al
*Mar 1 00:13:21.922: %SYS-5-CONFIG_I: Configured from console by vty0 (10.102.1.1)l
All possible debugging has been turned off
Router#
12-02-2003 07:34 AM
This is the output from the sh controller. I am having errors:
Router#sh controllers t1 0/0
T1 0/0 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20020812, FPGA: 11
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (124 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
8 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
8 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 1:
2 Line Code Violations, 6 Path Code Violations
56 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 2 Degraded Mins
60 Errored Secs, 1 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 1 15 minute intervals):
2 Line Code Violations, 6 Path Code Violations,
56 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 2 Degraded Mins,
60 Errored Secs, 1 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Router#
12-02-2003 08:35 AM
Hello,
you might want to try and change the cablelength in your controller config, currently it is gain36 0db, the default is gain26 0db.
Here is a link to explain the different options of this command, it also depends on your platform:
Regards,
Georg
12-02-2003 08:55 AM
tried that, still same issue.
12-02-2003 11:35 AM
Hello,
stupid question maybe, but you are sure about the ISDN switch type, the line coding, and the framing parameters ?
Check this document for troubleshooting T1 Error Events:
http://www.cisco.com/en/US/partner/tech/tk713/tk628/technologies_tech_note09186a00801095a3.shtml
Regards,
Georg
12-04-2003 01:02 PM
Georg is on the right track. Contact your Telco to ensure that their parameters are matching yours - your debug only shows outputs, no inputs from the Telco.
01-31-2004 09:20 AM
You need the
isdn protocol-emulate network
command on your serial 0/0:23
thanks
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