brazil r2 digital clearfwd (telefonica block channels)

[dsobrinho]

Hey guys,

Does anybody knows what the cause for channels block for clearfwd?

I believe that all configuration applied on this voice gateway was okay, because I have many others users with the same configuration.

These channels are not more available for use. I contact the local PSTN to check this reason and them reports that it is my equipment problem.

DS0 channel specific status info:
                                      IN      OUT
PORT            CH  SIG-TYPE    OPER STATUS   STATUS    TIP     RING
=============== == ============ ==== ======   ======    ===     ====
0/0/0:0          01  r2-digital  up   clearfwd idle                      
0/0/0:0          02  r2-digital  up   answered idle                      
0/0/0:0          03  r2-digital  up   clearfwd idle                      
0/0/0:0          04  r2-digital  up   clearfwd idle                      
0/0/0:0          05  r2-digital  up   answered idle                      
0/0/0:0          06  r2-digital  dorm idle     idle                      
0/0/0:0          07  r2-digital  up   clearfwd idle                      
0/0/0:0          08  r2-digital  dorm idle     idle                      
0/0/0:0          09  r2-digital  dorm idle     idle                      
0/0/0:0          10  r2-digital  up   clearfwd idle                      
0/0/0:0          11  r2-digital  dorm idle     idle                      
0/0/0:0          12  r2-digital  up   clearfwd idle                      
0/0/0:0          13  r2-digital  up   clearfwd idle                      
0/0/0:0          14  r2-digital  up   clearfwd idle                      
0/0/0:0          15  r2-digital  dorm idle     idle                      
0/0/0:0          17  r2-digital  dorm idle     idle                      
0/0/0:0          18  r2-digital  dorm idle     idle                      
0/0/0:0          19  r2-digital  up   clearfwd idle                      
0/0/0:0          20  r2-digital  dorm idle     idle                      
0/0/0:0          21  r2-digital  up   clearfwd idle                      
0/0/0:0          22  r2-digital  up   answered idle                      
0/0/0:0          23  r2-digital  up   clearfwd idle                      
0/0/0:0          24  r2-digital  dorm idle     idle                      
0/0/0:0          25  r2-digital  dorm idle     idle                      
0/0/0:0          26  r2-digital  dorm idle     idle                      
0/0/0:0          27  r2-digital  dorm idle     idle                      
0/0/0:0          28  r2-digital  dorm idle     idle                      
0/0/0:0          29  r2-digital  dorm idle     idle                      
0/0/0:0          30  r2-digital  dorm idle     idle                      
0/0/0:0          31  r2-digital  up   clearfwd idle                     

-----------------------------------------------------------------------------

controller E1 0/0/0
framing NO-CRC4
ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled ani
cas-custom 0
  country brazil use-defaults
  metering
  category 2
  answer-signal group-b 1

!
!

following the output of my configuration attached.

[TEDDY LLANO]

I had this problem in my gateway with IOS version 12.4(xx)T. I upgraded it to version 15.1(x)M and the gateway is working fine.
Workaround: you can use the commands "ds0 busyout 1-16,17-31 soft" and "no ds0 busyout 1-16,17-31 soft" under the controller configuration in order to release the stuck channels.

[TEDDY LLANO]

Additional information: This problem is related to bug CSCtd74470 (E1 R2 configured voice port, intermittently stuck in clearfwd state).
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?caller=pluginredirector&method=fetchBugDetails&bugId=CSCtd74470

Regards,

Teddy Llano

[dsobrinho]

Hi Teddy,

Thanks for your support and comments here. I will check again and keep you informed if everything gone be alrigth.

Thanks very mutch

Daniel

[leandro.brito]

Dear all,

I do have this problem under a 3825 connected to Telefonica by R2.

I've upgraded the IOS to a 12.4(15)T15 version which should be already fixed.

Teddy, can you give us the IOS that solve your case?

Regards,

Leandro

[TEDDY LLANO]

Hi Leandro,

I have a Cisco 3825 with the IOS version 15.1(4)M that solves this problem.

Regards,

Teddy

[leandro.brito]

Thanks Teddy,

I'm gonna upgrade it and post here the results.

[leandro.brito]

Still get the same error.

Provider tell me that I'm not sending a disconnect, so they keep the channel on busy, but the router release it.

Next call on the same channel, I got busy.

[leandro.brito · Accepted solution]

I realized that the channels are not blocked in the "clearfwd" anymore, however, they keep busy (in a wrong way) at the service provider, so, when I try to make a call by this channel, I got busy tone.

Problem is that it keep busy in the provider forever, and after a while (about 5-6 hours) all my channels are inactive.

[dsobrinho]

Hi Leandro,

Please send the configuration applied on E1 R2 and the command string "show voice port summary".

Some PSTN use another standard in R2 Digital.

controller E1 0/0/0

framing NO-CRC4

ds0-group 0 timeslots 1-15,17-31 type r2-digital (r2-compelled ani) sometimes need change to r2-semi-compelled

cas-custom 0

  country brazil use-defaults

  metering

  category 2

  answer-signal group-b 1

[leandro.brito · Accepted solution]

Hi dsobrinho,

We've made some changes and no channels were blocked on the last 48 hour.

controller E1 0/2/0

framing NO-CRC4

clock source line primary

ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 0

  country brazil

  metering

  release-ack

  category 2

  answer-signal group-b 1

  trunk-group telefonica 1

description ## E1 01 ##

voice-port 0/2/0:0

cptone BR

timeouts call-disconnect 3

bearer-cap Speech

voice-port 0/2/1:0

During our monitoring, we realized that after applying this config "timeouts call-disconect 3" on the voice-port has solved our problem.

Service provider has made some monitoring using their protocol analyzer and they said it's working as expected.

I'll wait until monday to consider it solved, and let you know about it.

Regards,

Leandro

[dsobrinho]

hi Leandro,

Did you check with PSTN if the E1 is r2-compelled ani ou r2-semi-compelled ?

What type of technology involved in the PSTN side (NORTEL, HUAWEI,SIMIENS, ALACATEL).

And please don't forget to send me the output "show voice port summy"

Best regards

dsobrinho

[leandro.brito]

Hi dsobrinho,

It's r2-compelled.

Follow the command you've asked, but now, the problem is already solved according my last post.

BSRSEQ01# show voice port summary

                                           IN       OUT

PORT            CH   SIG-TYPE   ADMIN OPER STATUS   STATUS   EC

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

0/2/0:0         01  r2-digital  up    up   idle     answered y

0/2/0:0         02  r2-digital  up    up   idle     answered y

0/2/0:0         03  r2-digital  up    up   idle     answered y

0/2/0:0         04  r2-digital  up    up   idle     answered y

0/2/0:0         05  r2-digital  up    up   idle     answered y

0/2/0:0         06  r2-digital  up    up   idle     answered y

0/2/0:0         07  r2-digital  up    up   idle     answered y

0/2/0:0         08  r2-digital  up    up   idle     answered y

0/2/0:0         09  r2-digital  up    up   idle     answered y

0/2/0:0         10  r2-digital  up    up   idle     answered y

0/2/0:0         11  r2-digital  up    up   idle     answered y

0/2/0:0         12  r2-digital  up    up   idle     answered y

0/2/0:0         13  r2-digital  up    up   idle     answered y

0/2/0:0         14  r2-digital  up    up   idle     answered y

0/2/0:0         15  r2-digital  up    dorm idle     idle     y

0/2/0:0         17  r2-digital  up    up   idle     answered y

0/2/0:0         18  r2-digital  up    dorm idle     idle     y

0/2/0:0         19  r2-digital  up    up   idle     answered y

0/2/0:0         20  r2-digital  up    dorm idle     idle     y

0/2/0:0         21  r2-digital  up    up   idle     answered y

0/2/0:0         22  r2-digital  up    dorm idle     idle     y

0/2/0:0         23  r2-digital  up    dorm idle     idle     y

0/2/0:0         24  r2-digital  up    dorm idle     idle     y

0/2/0:0         25  r2-digital  up    dorm idle     idle     y

0/2/0:0         26  r2-digital  up    dorm idle     idle     y

0/2/0:0         27  r2-digital  up    dorm idle     idle     y

0/2/0:0         28  r2-digital  up    dorm idle     idle     y

0/2/0:0         29  r2-digital  up    dorm idle     idle     y

0/2/0:0         30  r2-digital  up    dorm idle     idle     y

0/2/0:0         31  r2-digital  up    dorm idle     idle     y

Regards,

Leandro

[ameyphutane@gmail.com]

HI Leandro,
i am facing the same issue,
neither the timeouts command nor busyout is working.
I am not allowed to update the OS.
Can you suggest a command so that i can manually free the channels