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

[Jason Aarons (AM)]

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<mailto:jason.aarons at dimensiondata.com>
To: cisco-voip at puck.nether.net<mailto: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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itevomcid
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