M2T-T3+ pa line coding

Unanswered Question
Jul 3rd, 2007

Cannot find nor verify the line coding for a T3 terminated in a M2T-T3+ port adapter. Can't find this spec in either serial int or in controller. Need to verify its set to B3ZS for a carrier.

CCO specs say the PA is set to B3ZS, but can I confirm on my routers port adapter and what is the command?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Paolo Bevilacqua Tue, 07/03/2007 - 12:21


per telecom standards, there is no other linecode than B8ZS (not B3ZS) for T3 circuits.

Hope this helps, please rate post if it does!

sundar.palaniappan Tue, 07/03/2007 - 13:02

Did you try the command 'show controller t3 (port#)'?

The output would look something like this.

Router#sh controller t3 2/0

T3 2/0 is up.

Applique type is Subrate T3

No alarms detected.

MDL transmission is disabled

FEAC code received: No code is being received

Framing is C-BIT Parity, Line Code is B3ZS



Paolo Bevilacqua Tue, 07/03/2007 - 13:12

Then I stand corrected on the proper spelling, having got it mixed with the T1 linecode.

dgalati000 Fri, 07/06/2007 - 08:16

Sundar, was off for a few days...I cannot get that output on my router...perhaps sending you the following info will give you more info >>

Part number 73-3761-03

FRU Part Number PA-2T3+=

Router type: 7206 VXR NPE-G2

running vers: Version 12.4(11)T1

sundar.palaniappan Fri, 07/06/2007 - 12:22

The command 'show controller t3 slot/port' should be a valid command on 7200. Does it give you an error when this command is issued. If it does can you do a 'show controller ?' and post the output.




This Discussion