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Telmex E1 Digital Trunk Service - Configuration Help

The Cisco router model for this site is: 2811

Running Version 12.4(20)T

Hello,

I am trying to bring up voice service delivered by Telmex to our Mexico location.  They have dropped off 10 digital lines, basically a PRI circuit that is connected to a 1-port 2nd Gen Muliflex Trunk Voice/WAN int. Card - T1/E1.  I built the controller and voice-port that looks like below.  I am unable to get the circuit in an up state.  Anothere question is why when I build out the controller E1 0/2/0 do I NOT get get a serial interface?

controller E1 0/2/0
framing NO-CRC4
ds0-group 1 timeslots 1-15,17-30 type r2-digital r2-compelled ani
cas-custom 1
  country telmex
  category 2
  answer-signal group-b 1
  groupa-callerid-end


voice-port 0/2/0:1
cptone MX

Doing a show controller e1 0/2/0 I get:

E1 0/2/0 is down.

  Applique type is Channelized E1 - balanced

  Cablelength is Unknown

  Transmitter is sending remote alarm.

  Receiver has loss of signal.

  alarm-trigger is not set

  Version info Firmware: 20090408, FPGA: 13, spm_count = 0

  Framing is NO-CRC4, Line Code is HDB3, Clock Source is Line.

  Data in current interval (799 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, 799 Unavail Secs

16 REPLIES

Telmex E1 Digital Trunk Service - Configuration Help

Hi

On controller configuration, add "clock source line primary"

You don't get a serial interface because you are configuring a Ds0 Group not a primary group

HTH

Regards

Carlo

Please rate all helpful posts

"The more you help the more you learn"

Please rate all helpful posts "The more you help the more you learn"
New Member

Telmex E1 Digital Trunk Service - Configuration Help

It does not allow me to add that - only clock source line independent

New Member

Telmex E1 Digital Trunk Service - Configuration Help

here is the current clocking configuration: 0/0/0 is the MPLS connection.

clock timezone EST -5

clock summer-time EDT recurring

network-clock-participate wic 0

network-clock-participate wic 2

network-clock-select 1 E1 0/0/0

Telmex E1 Digital Trunk Service - Configuration Help

If the controller is down try these checks:

- check cable

- check pin out

- check framing (crc, no crc)

- try the controller with a physical loop

You can find more suggestions here: http://docwiki.cisco.com/wiki/Cisco_IOS_Voice_Troubleshooting_and_Monitoring_--_T1_or_E1_Interface_Troubleshooting

Regards.

VIP Purple

Telmex E1 Digital Trunk Service - Configuration Help

Hi Troyputnam,

In addition to what Mr. Daniele has said, you can swap the pairs 1,2 and 4,5 in case if controller is not coming UP.

Also, try giving physical loop towardsTelemex, so that they can connect BERT Meter  and check the quality of paris.

regds,

aman

New Member

Telmex E1 Digital Trunk Service - Configuration Help

My Controller is now up.  I am not aware if someone onsite swapped the cable or not.  When I view the voice port summary I show the IN STATUS for the 10 channels as blocked.  Is this a telmex issue or a config issue on my end?  Any experience out there with this?

rtr-2811-200-17-1#show voice port summary

                                           IN       OUT

PORT            CH   SIG-TYPE   ADMIN OPER STATUS   STATUS   EC

=============== == ============ ===== ==== ======== ======== ==

0/2/0:1         01  r2-digital  up    up   blocked  idle     y

0/2/0:1         02  r2-digital  up    up   blocked  idle     y

0/2/0:1         03  r2-digital  up    up   blocked  idle     y

0/2/0:1         04  r2-digital  up    up   blocked  idle     y

0/2/0:1         05  r2-digital  up    up   blocked  idle     y

0/2/0:1         06  r2-digital  up    up   blocked  idle     y

0/2/0:1         07  r2-digital  up    up   blocked  idle     y

0/2/0:1         08  r2-digital  up    up   blocked  idle     y

0/2/0:1         09  r2-digital  up    up   blocked  idle     y

0/2/0:1         10  r2-digital  up    up   blocked  idle     y

0/1/0           --  fxo-ls      up    dorm idle     on-hook  y

0/1/1           --  fxo-ls      up    dorm idle     on-hook  y

0/1/2           --  fxo-ls      up    dorm idle     on-hook  y

0/1/3           --  fxo-ls      up    dorm idle     on-hook  y

Hall of Fame Super Gold

Telmex E1 Digital Trunk Service - Configuration Help

First and foremost, update IOS.

New Member

Telmex E1 Digital Trunk Service - Configuration Help

Hello,

I have considered that based on the research I have done.  Are you recommending I upgrade to a 15.1(x)M code? 

Hall of Fame Super Gold

Telmex E1 Digital Trunk Service - Configuration Help

Yes, latest.

New Member

Telmex E1 Digital Trunk Service - Configuration Help

Update - I have not updated the IOS as of yet. I did however notice I did not complete the build out for MTP resources on the router.  I built it out and did a shut and no shut of voice port and now the channels IN STATUS are in an idle state.

Still not getting inbound or outbound calls.. working on dial-peers....

Hall of Fame Super Gold

Re: Telmex E1 Digital Trunk Service - Configuration Help

The version you are using has many E1 R2 bugs and will give you nothing but trouble.

New Member

Re: Telmex E1 Digital Trunk Service - Configuration Help

I found and verified with TAC that the carrier (Telmex) failed to send a “SEIZE-ACK” after around 5 seconds that the gateway SEIZURE signal, it is the main cause why the calls are failing. The gateway is also receiving BLOCK state from the carrier.

Does anyone have a reliable support number for Telmex where I can choose an option for English?

Thank You!

Hall of Fame Super Gold

Telmex E1 Digital Trunk Service - Configuration Help

Possibly telco has never truly put the circuit into service at CO, so a simple request to do that for a local person may resolve.

New Member

We got a new site in Mexico,

We got a new site in Mexico, connected by Telmex, using an E1 R2 modified. Router is 2921, 15.4(1)T1, with VWIC3-1MFT-T1/E1. Setup has been done by MGCP, controller E1 shows up state. Its current config looks like:

controller E1 0/0/0
 framing NO-CRC4
 ds0-group 1 timeslots 1-10 type r2-digital r2-compelled ani
 cas-custom 1
  country telmex
  category 2
  answer-signal group-b 1
  groupa-callerid-end

voice-port 0/0/0:1
 cptone MX

show voice port sum says oper state dorm.

The gateway in CUCM (8.5.1) shows unregistered state. As this is our first R2 setup I am wondering if it can be done by using MGCP? If so can please someone assist on how to set it up in CUCM?

Any help would be greatly appreciated!

Bronze

It would have probably been

It would have probably been better to start a new discussion rather than commenting on an old post.

Can you create a new discussion and post the output of sh run from your 2921 gateway?

Thanks
Rob

New Member

done :) can you please check?

done :) can you please check?

https://supportforums.cisco.com/discussion/13121096/telmex-e1-r2-mgcp-gateway

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