CAS to FXS on Cisco 2851

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Apr 1st, 2009
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Hi,

When there is an incoming E1 R2 CAS call directed towards an FXS, the call does not complete. The cisco does collect the digits on the incoming side (CAS) but does not send it to the FXS. Is there any specific configuration that needs to be done for this?


Thanks

Ashwin

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ashwin_k_kumar Wed, 04/01/2009 - 18:28
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The E1 R2 config is as below


controller E1 0/3/1

framing NO-CRC4

clock source line primary

ds0-group 12 timeslots 1-12 type r2-digital r2-compelled

cas-custom 12

country brazil

metering

release-guard-time 500

category 2

signal-end-to-end

answer-signal group-b 1

ani-digits min 7 max 11




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ashwin_k_kumar Thu, 04/02/2009 - 15:26
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Thanks for the reply.

I tried that but there was no difference.


What I did now was to make

FXS->cas_loop_on_cisco_itself->FXS


All of this on the same box and I still see the problem.


Am atatching the logs for this.



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Nicholas Matthews Thu, 04/02/2009 - 17:58
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Well this doesn't look good:

2 22:37:20.302: [0/3/0:12(1), R2_Q421_IC_ANSWER, E_DSP_SIG_0000] -> ERROR: INVALID INPUT


Then it looks like a few seconds into the call 0/0/0 hangs up:


*Apr 2 22:37:26.894: htsp_process_event: [0/0/0, FXSLS_CONNECT, E_DSP_SIG_0100]fxsls_offhook_onhook, HF duration Max=1000, HF duration Min=150



-nick


ashwin_k_kumar Thu, 04/02/2009 - 18:41
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I dont know what this means


R2_Q421_IC_ANSWER, E_DSP_SIG_0000] -> ERROR: INVALID INPUT


The terminator never rings. Any options of what could be wrong and how we can go about this?


Nicholas Matthews Thu, 04/02/2009 - 22:36
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Hi Ashwin,


I'll be honest - I don't have all of the E1 R2 states and ABCD bits memorized. I usually have to stare through lots of examples and documentation to figure out each state.


You may want to start here:

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_configuration_example09186a00800ad389.shtml



This page has some of the bit tables required:

http://www.quintum.com/support/xplatform/r2/index.shtml




Best of luck!



-nick


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