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<title>Re: [cisco-voip] 3825 Voice Gateway Issue</title>
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<p class=MsoNormal><em><i><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:navy'>David Fielder</span></font></i></em><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:navy'>Senior Engineer</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:navy'>Dimension Data</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:navy'>Office: (336)
510-9431</span></font><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:navy'>Mobile: (336)
669-5129</span></font><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><a
href="mailto:david.fielder@us.didata.com">david.fielder@us.didata.com</a></span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Nikola Stojsin
[mailto:nikola@worldnet.att.net] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, October 16, 2006
5:45 PM<br>
<b><span style='font-weight:bold'>To:</span></b> David Fielder (US)<br>
<b><span style='font-weight:bold'>Cc:</span></b> cisco-voip@puck.nether.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [cisco-voip] 3825
Voice Gateway Issue</span></font><o:p></o:p></p>
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12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Two quick questions -<o:p></o:p></span></font></p>
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10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>1. Can you please verify that the PVDM-2s
in the 3825 work fine? (I remember seeing something similar on a router with a
PVDM issue.)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>2. Can you post your router configuration
– it would definitely help.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>HTH, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Nikola<o:p></o:p></span></font></p>
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10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>---------------------------<br>
Nikola Stojsin<br>
PhD CCIE #12888<br>
<a href="mailto:Nikola@att.net">Nikola@att.net</a><br>
(917) 558-1423<br>
---------------------------<o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
cisco-voip-bounces@puck.nether.net on behalf of David Fielder (US)<br>
<b><span style='font-weight:bold'>Sent:</span></b> Mon 10/16/2006 4:23 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Ryan Ratliff<br>
<b><span style='font-weight:bold'>Cc:</span></b> cisco-voip@puck.nether.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [cisco-voip] 3825
Voice Gateway Issue</span></font><o:p></o:p></p>
</div>
<div>
<p><font size=2 face="Times New Roman"><span style='font-size:10.0pt'>I will
see about getting a capture. I have not done any PCM dumps<br>
<br>
David Fielder<br>
Senior Engineer<br>
Dimension Data<br>
Office: (336) 510-9431<br>
<st1:City w:st="on"><st1:place w:st="on">Mobile</st1:place></st1:City>: (336)
669-5129<br>
david.fielder@us.didata.com<br>
<br>
-----Original Message-----<br>
From: Ryan Ratliff [<a href="mailto:rratliff@cisco.com">mailto:rratliff@cisco.com</a>]<br>
Sent: Monday, October 16, 2006 3:17 PM<br>
To: David Fielder (US)<br>
Cc: cisco-voip@puck.nether.net<br>
Subject: Re: [cisco-voip] 3825 Voice Gateway Issue<br>
<br>
Can you get a sniffer capture at the phone and recreate the audio in <br>
the capture file?<br>
<br>
Have you done PCM dumps at the router yet?<br>
<br>
-Ryan<br>
<br>
On Oct 16, 2006, at 3:09 PM, David Fielder ((US)) wrote:<br>
<br>
I have a very interesting issue at a client I am working with. We are <br>
converting this customer from a Nortel to CallManager. This customer <br>
is using IP phones already. There are four locations that are <br>
converting to IP phones. All four locations will be using a single <br>
3825 voice gateway to the PSTN. We connected the phones at one <br>
location and configured the gateway as an MGCP gateway. We have two <br>
Bellsouth ISDN PRIs connected to the gateway that came out of the <br>
Nortel. The ISDN connections come up with no problem. We have <br>
verified the Frame type with the Bellsouth and the PRI are working <br>
fine. The phones are using PoE and are getting the IP address via <br>
DHCP and are using a voice VLAN. The PCs are connected to the access <br>
port on the phones. The Phones register to the Subscriber just fine. <br>
Calls are being routed to the Gateway with no problem. Inbound calls <br>
make it to the IP phones fine. So you are asking then what the <br>
problem is. There is no audio on the call or ring back. The call sets <br>
up fine. The ISDN debugs show no errors. The phone maintains the <br>
connection until you hang up. And if you look at the RTP and UDP <br>
debugs it is sending and receiving the RTP traffic without issues or <br>
appears to be. You can start an ISDN Q931 debug and make a call. When <br>
the call is connected look at the traffic info on the phone and <br>
everything appears as it should accept there is no audio, static or <br>
anything. We have made calls from different phones, phone types <br>
(7961, 7912, and IP Communicator) with the same result. IP <br>
connectivity is good. There are no IP routing issues. We upgraded the <br>
IOS on the Gateway. We caused the phones to go into SRST mode to <br>
remove the CallManager from the equation and it was the same result. <br>
Cisco to Cisco calls work great. This one has TAC scratching there <br>
head. If anyone has ever seen a problem like this or have any other <br>
suggestions I would really appreciate your input.<br>
<br>
<br>
<br>
David Fielder<br>
<br>
Senior Engineer<br>
<br>
Dimension Data<br>
<br>
Office: (336) 510-9431<br>
<br>
<st1:City w:st="on"><st1:place w:st="on">Mobile</st1:place></st1:City>: (336)
669-5129<br>
<br>
david.fielder@us.didata.com<br>
<br>
<br>
<br>
<br>
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