[cisco-voip] 3825 Voice Gateway Issue
David Fielder (US)
David.Fielder at us.didata.com
Mon Oct 16 22:19:40 EDT 2006
The IOS upgrade is 12.3(14)T7. The Call Manager is 4.1(3)sr3b.
David Fielder
Senior Engineer
Dimension Data
Office: (336) 510-9431
Mobile: (336) 669-5129
david.fielder at us.didata.com
________________________________
From: Erick Bergquist [mailto:erickbe at yahoo.com]
Sent: Monday, October 16, 2006 9:09 PM
To: David Fielder (US); nikola at att.net
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] 3825 Voice Gateway Issue
On the router, during a call is active, is the IP address under 'show
call active voice brief' reachable from the MGCP interface on the router
that MGCP is bound to and vice versa? Does that output show tx/rx
traffic counts incrementing? With MGCP all the information may not be
displayed for that command, but the IP address and tx/rx counts will be
there.
Also check the phones web page during an active connected phone call,
the stream page and see what IP's it is showing for the stream and
verify reachibility of the path from phone to the remote device (the
gateway in this case).
Also, from the config , mgcp bind commands are set for the gigabit
ethernet but loopback has description on it as being MGCP interface. May
not be a issue since you are troubleshooting this issue, etc and
probably made changes while figuring this out but just in case you have
routing/ACLs/etc set up for that and not the other interfaces, etc.
May want to do a 'debug mgcp pack' during call setup to see if
setup/audio-cutover is correct and all packets are making it to gateway,
etc. Are there any routing, firewalls, or QoS policies that may be
effecting the call flow past this gateway? There are no drops on the QoS
policies?
The 'service mgcpapp' commands are not needed on the pots dial-peers for
PRI ports. In older cisco docs this was the practice but then there was
a bug id on how that effected MGCP PRI backhauls and caused problems so
now they say do not put that command on pots dial-peers for PRI ports.
There are some conflicting docs out there on this still.
Is this the only site having this issue, other sites working fine if
there are others? What version CCM and phone firmwares?
What did you upgrade the IOS to? I see the config posted is 12.3(14)T5
but the current in that stream is 12.3(14)T7.
-- Erick
----- Original Message ----
From: David Fielder (US) <David.Fielder at us.didata.com>
To: nikola at att.net
Cc: cisco-voip at puck.nether.net
Sent: Monday, October 16, 2006 4:58:19 PM
Subject: Re: [cisco-voip] 3825 Voice Gateway Issue
David Fielder
Senior Engineer
Dimension Data
Office: (336) 510-9431
Mobile: (336) 669-5129
david.fielder at us.didata.com
________________________________
From: Nikola Stojsin [mailto:nikola at worldnet.att.net]
Sent: Monday, October 16, 2006 5:45 PM
To: David Fielder (US)
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] 3825 Voice Gateway Issue
Two quick questions -
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.)
2. Can you post your router configuration it would definitely help.
HTH,
Nikola
---------------------------
Nikola Stojsin
PhD CCIE #12888
Nikola at att.net
(917) 558-1423
---------------------------
________________________________
From: cisco-voip-bounces at puck.nether.net on behalf of David Fielder (US)
Sent: Mon 10/16/2006 4:23 PM
To: Ryan Ratliff
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] 3825 Voice Gateway Issue
I will see about getting a capture. I have not done any PCM dumps
David Fielder
Senior Engineer
Dimension Data
Office: (336) 510-9431
Mobile : (336) 669-5129
david.fielder at us.didata.com
-----Original Message-----
From: Ryan Ratliff [mailto:rratliff at cisco.com]
Sent: Monday, October 16, 2006 3:17 PM
To: David Fielder (US)
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] 3825 Voice Gateway Issue
Can you get a sniffer capture at the phone and recreate the audio in
the capture file?
Have you done PCM dumps at the router yet?
-Ryan
On Oct 16, 2006, at 3:09 PM, David Fielder ((US)) wrote:
I have a very interesting issue at a client I am working with. We are
converting this customer from a Nortel to CallManager. This customer
is using IP phones already. There are four locations that are
converting to IP phones. All four locations will be using a single
3825 voice gateway to the PSTN. We connected the phones at one
location and configured the gateway as an MGCP gateway. We have two
Bellsouth ISDN PRIs connected to the gateway that came out of the
Nortel. The ISDN connections come up with no problem. We have
verified the Frame type with the Bellsouth and the PRI are working
fine. The phones are using PoE and are getting the IP address via
DHCP and are using a voice VLAN. The PCs are connected to the access
port on the phones. The Phones register to the Subscriber just fine.
Calls are being routed to the Gateway with no problem. Inbound calls
make it to the IP phones fine. So you are asking then what the
problem is. There is no audio on the call or ring back. The call sets
up fine. The ISDN debugs show no errors. The phone maintains the
connection until you hang up. And if you look at the RTP and UDP
debugs it is sending and receiving the RTP traffic without issues or
appears to be. You can start an ISDN Q931 debug and make a call. When
the call is connected look at the traffic info on the phone and
everything appears as it should accept there is no audio, static or
anything. We have made calls from different phones, phone types
(7961, 7912, and IP Communicator) with the same result. IP
connectivity is good. There are no IP routing issues. We upgraded the
IOS on the Gateway. We caused the phones to go into SRST mode to
remove the CallManager from the equation and it was the same result.
Cisco to Cisco calls work great. This one has TAC scratching there
head. If anyone has ever seen a problem like this or have any other
suggestions I would really appreciate your input.
David Fielder
Senior Engineer
Dimension Data
Office: (336) 510-9431
Mobile : (336) 669-5129
david.fielder at us.didata.com
Disclaimer: This e-mail communication and any attachments may contain
confidential and privileged information and is for use by the
designated addressee(s) named above only. If you are not the intended
addressee, you are hereby notified that you have received this
communication in error and that any use or reproduction of this email
or its contents is strictly prohibited and may be unlawful. If you
have received this communication in error, please notify us
immediately by replying to this message and deleting it from your
computer. Thank you.
_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck...nether.net/mailman/listinfo/cisco-voip
<https://puck.nether.net/mailman/listinfo/cisco-voip>
-----------------------------------------
Disclaimer:
This e-mail communication and any attachments may contain
confidential and privileged information and is for use by the
designated addressee(s) named above only. If you are not the
intended addressee, you are hereby notified that you have received
this communication in error and that any use or reproduction of
this email or its contents is strictly prohibited and may be
unlawful. If you have received this communication in error, please
notify us immediately by replying to this message and deleting it
from your computer. Thank you.
_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck...nether.net/mailman/listinfo/cisco-voip
<https://puck..nether.net/mailman/listinfo/cisco-voip>
________________________________
Disclaimer: This e-mail communication and any attachments may contain
confidential and privileged information and is for use by the designated
addressee(s) named above only. If you are not the intended addressee,
you are hereby notified that you have received this communication in
error and that any use or reproduction of this email or its contents is
strictly prohibited and may be unlawful. If you have received this
communication in error, please notify us immediately by replying to this
message and deleting it from your computer. Thank you.
_______________________________________________
cisco-voip mailing list
cisco-voip at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-voip
-----------------------------------------
Disclaimer:
This e-mail communication and any attachments may contain
confidential and privileged information and is for use by the
designated addressee(s) named above only. If you are not the
intended addressee, you are hereby notified that you have received
this communication in error and that any use or reproduction of
this email or its contents is strictly prohibited and may be
unlawful. If you have received this communication in error, please
notify us immediately by replying to this message and deleting it
from your computer. Thank you.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://puck.nether.net/pipermail/cisco-voip/attachments/20061016/5cc386a2/attachment-0001.html
More information about the cisco-voip
mailing list