[cisco-voip] E1 CAS card in Mexico not getting enough digits

[Ryan Huff]

Well it had to either be the Telco or an inbound xlate. Glad you found it! Good job, now go have an Iced Tea and a vacation!

From: jason.aarons at dimensiondata.com
To: avholloway+cisco-voip at gmail.com; ryanhuff at outlook.com; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] E1 CAS card in Mexico not getting enough digits
Date: Mon, 17 Nov 2014 06:03:23 +0000









So after about 5 CCIEs looked at it and 5 Cisco AS onsite engineers and 2 days of effort we found the translation-profile on the voice-port was somehow responsible. 
 Seems the incoming digits took longer on router-b.  Go figure.  We move the translation-profile from the voice port to the dial-peer.
 
I hate CAS.
 
From: Anthony Holloway [mailto:avholloway+cisco-voip at gmail.com]


Sent: Sunday, November 16, 2014 9:38 PM

To: Jason Aarons (AM); Ryan Huff; cisco-voip at puck.nether.net

Subject: Re: [cisco-voip] E1 CAS card in Mexico not getting enough digits
 
What if...just what if, it's alternating between 3 and 4 digits every time you unplug it?  Try unplugging it and re-plugging it into the same router to validate this crazy idea.

On Sun Nov 16 2014 at 7:21:11 PM Jason Aarons (AM) <jason.aarons at dimensiondata.com> wrote:



If you move circuit to another router and it works, then its hard to blame the carrier! 


 


CAS stinks.


 


 



Sent from my Verizon Wireless 4G LTE Smartphone




 

-------- Original message --------


From: Ryan Huff 


Date:11/16/2014 15:45 (GMT-05:00) 


To: "Jason Aarons (AM)" , 
cisco-voip at puck.nether.net 


Subject: RE: [cisco-voip] E1 CAS card in Mexico not getting enough digits



 



Ahh, missed the part about CAS, sorry.




So is the provider doing something on their side with the MAC of the E1 on your side? If the provider is sending 3 digits (regardless if it works on the other router) then it should be their issue.



You have the plan and type set according to what the provider expects?



Are you getting 3 digits for the calling or called party?



From: 
jason.aarons at dimensiondata.com

To: ryanhuff at outlook.com;
cisco-voip at puck.nether.net

Subject: RE: [cisco-voip] E1 CAS card in Mexico not getting enough digits

Date: Sun, 16 Nov 2014 19:56:50 +0000

CAS no q931

 

Debug shows on bad router we receive 3 digits from provider, move circuit to another router we receive 4 digits from provider.

 



From: Ryan Huff [mailto:ryanhuff at outlook.com]


Sent: Sunday, November 16, 2014 8:52 AM

To: Jason Aarons (AM); 
cisco-voip at puck.nether.net

Subject: RE: [cisco-voip] E1 CAS card in Mexico not getting enough digits



 

 


So on router B, do the following and then place an inbound call from a known number:



hostname# conf t

hostname (config)# logging console 

hostname (config)# exit

hostname# term mon 

hostname# debug isdn q931



What do you see for "Calling Party Number i =", "Plan:" and "Type:"? The "plan" and "type" fields should be located below the "calling party  number" field. Once you've determined that you really are receiving 4 digits from the telco on that circuit the next
 step is to figure out what in the router config is stripping the digit. If you find that you are not receiving 4 digits from the telco, you can either work with the telco to fix it on the PRI or if the missing digit is a constant, you can add it with an inbound
 voice translation rule.



Look at your inbound dial peers; do you have any voice translation rules that are doing any digit stripping? Are the inbound voice translations using different regex than on the router that is working and if so, what is different?



Thanks,



Ryan Huff

CCIE Collaboration (Written), CCNP Voice, CCNA Voice

CCNA Route/Switch, CCNA Wireless, UCCX Specialist




From: jason.aarons at dimensiondata.com

To: cisco-voip at puck.nether.net

Date: Sun, 16 Nov 2014 08:18:22 +0000

Subject: [cisco-voip] E1 CAS card in Mexico not getting enough digits


I have a problem with a E1 CAS site in Mexico.  I have two routers. Router B is problem.  

 

In router A I see 4 digits come in on DTMF.  

In router B I see 3 digits come in on DTMF. We are missing 1 digit.

 

I swap the circuit and works fine in router A.  Same IOS both routers.

 

Controller e1 0/0/0

   Framing NO-CRC4

   dso-group 0 timeslots 1-10 type r2-digital dtmf dnis

   cas-custom 0

   Country telmex

   Seizure-ackt-time 2

 

 

 

 




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