[cisco-voip] Cell Phone Call Treatment Different than Landline

[Hodgeman, Samuel]

Cell phones vs. landlines should not be treated differently. HOWEVER I have seen that some alternative carriers may send their calls marked with the Bearer Capability set to something other than 'speech.' If this is what is causing your problem, you should see an error in the q931 debug 'bearer capability not available.' In that case you can try going into your d-channel serial interface and applying 'isdn incoming-voice modem' if yours is probably currently something different.


-          Sam H

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Matthew Saskin
Sent: Tuesday, April 27, 2010 11:45 AM
To: Tkachuk,Birni
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Cell Phone Call Treatment Different than Landline

My guess is that something from the ISDN side of things (information element, etc.) isn't getting properly translated and is causing issues once the call routes to EUM via SIP.

1 - When external calls to EUM fail (either don't route or get dropped) any error log messages on the exchange UM server(s)?
2 - Can you get a q931 debug from the gateway side of things for working and non-working calls?
3 - Can you get CallManager SIP traces for the working and non-working calls to EUM?

Matthew Saskin
msaskin at gmail.com<mailto:msaskin at gmail.com>
203-253-9571

July 18, 2010 - 1500m swim (in the hudson), 40k bike, 10k run
Please support the Leukemia & Lyphoma Society
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On Tue, Apr 27, 2010 at 12:40 PM, Tkachuk,Birni <birnit at nait.ca<mailto:birnit at nait.ca>> wrote:
We have a campus set up in a different city than our Call Manager (version 6.1.4) with a Voice Router and PRI Service for local calling.  We have Microsoft Exchange Unified Messaging for all of our staff which works great except at this remote campus.  When a cell phone call is received the call is routed to Exchange voicemail after 4 rings or on a busy.  When a landline call is received it will ring no answer but never route to voicemail.  If we call forward the phone line to voicemail the landline caller will hear a fast busy but the cell phone caller will go immediately to the voicemail.  Why would a cell phone receive different call treatment than a landline?

Birni Tkachuk
Network Services
Department of Information Services
NAIT
11762 - 106 Street NW
Edmonton, Alberta  T5G 2R1
P 780.471.7532  F 780.491.3083  E birnit at nait.ca<mailto:birnit at nait.ca>
www.nait.ca<http://www.nait.ca>


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