[cisco-voip] VoIP over Hardware VPN

Thu May 28 23:24:17 EDT 2009

Depends on the packet loss, if you are having packet loss you might want
to look at iLBC (codec) and then Transcoding resources.

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Go0se
Sent: Thursday, May 28, 2009 10:59 PM
To: 'Larry Hadrava'; 'Jim Reed'
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] VoIP over Hardware VPN

I agree. All phones, voice gateways, etc., need to be able to talk
directly to each other - so EVERY subnet that has a phone on it (at
least a phone you want to be able to talk to) must have connectivity to
the phone at your house (and vice versa). 

Unrelated to your issue, if you notice quality issues with calls you
might consider using the g729 codec.

-Go0se

http://atc.go0se.com

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Larry Hadrava
Sent: Thursday, May 28, 2009 7:50 PM
To: Jim Reed
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] VoIP over Hardware VPN

Jim:

I would check your allowed network lists on the VPN setup. You may be
allowing the subnets for the CUCM and Unity servers but possibly not the
DHCP subnet that the phone you are trying to call.

I am assuming that your voice servers are in a different subnet than the
IP phone at your house and on the other end. 

Thanks
Larry Hadrava
CCIE #12203 CCNP CCNA
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com

On Thu, May 28, 2009 at 8:43 PM, Jim Reed <jreed at swiftnews.com> wrote:

The phone is sitting here in my house and I can ping it from my computer
at my house.  I can do an extension to extension call and leave
voicemail which goes through.  However, if I do an extension to
extension call or make an outside call from or to the IP phone via the
telco then I see no rx traffic.  Thank You...

On 5/28/09 6:11 PM, "Craig Staffin" <craig at staffin.org> wrote:

Jim,

Keep in mind that the RTP traffic does not flow from phone to CUCM to
phone.  So you would actually need to make sure you can ping the phone
from your hours and vise versa.

Craig

On Thu, May 28, 2009 at 7:05 PM, Jim Reed <jreed at swiftnews.com> wrote:

Okay, hate to be a pain but the phone is registered and when I call one
of our main locations and enter the extension the phone rings at my
house but am getting no voice on my end.  Seeing tx traffic on the phone
statistics but no rx traffic.  Any thoughts?  Routing all seems to be in
place.  I can ping the phone from the Call Manager and can ping the Call
Manager from my home.  Have the phone in the same calling search space,
location, etc., as the Call Manager it's registering to.  It's showing a
g711 codec.

Thanks in advance for any advice...
-- 
Jim Reed
Technology Wrangler
Swift Communications, Inc.
970-683-5646 (Direct)
970-683-5650 (Fax)

On 5/28/09 3:48 PM, "Wes Sisk" <wsisk at cisco.com> wrote:

It depends on your setup.  If you are doing address translation then you
must have it enabled.

If you are not doing address translation and do not dynamic port
allocation (basically if you have permit ip any any) then you need to
have it disabled.

So, engineer's favorite answer - it depends.

/Wes

On Thursday, May 28, 2009 3:56:48 PM, Jim Reed <jreed at swiftnews.com>
<mailto:jreed at swiftnews.com>  wrote:

Re: [cisco-voip] VoIP over Hardware VPN Thanks, Lelio.
Are you referring to turning it on or turning it off!
 -- 
Jim Reed
Swift Communications, Inc.
970-683-5646 (Direct)
775-772-7666 (Cell)

On 5/28/09 1:55 PM, "Lelio Fulgenzi" <lelio at uoguelph.ca>
<mailto:lelio at uoguelph.ca>  wrote:

I think the biggest thing is "sccp fixup"....

---
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Bad grammar makes me [sic]" - Tshirt

----- Original Message -----
From: "Jim Reed" <jreed at swiftnews.com> <mailto:jreed at swiftnews.com> 
To: cisco-voip at puck.nether.net, ask-icd-ivr-support at external.cisco.com
Sent: Thursday, May 28, 2009 3:44:45 PM GMT -05:00 US/Canada Eastern
Subject: [cisco-voip] VoIP over Hardware VPN

VoIP over Hardware VPN Anyone have any hints, tips, suggestions,
comments, concerns, etc., regarding running a single IP phone over a
hardware-to-hardware VPN.  I've tried it in the past but could only seem
to get voice going in one direction.  It's been a while and I'm going to
give it another shot.  Will be working with ASA 5505 on one and ASA 5510
on the other.  Call Manager 4.x.  Probably a 7940 or 7960 phone.
Internet connections are 15-Meg-Over-Ethernet on one end and
10-Meg-Over-Ethernet on the other.  Current ping times between devices
on the two ends are consistently very fast -- less than 100ms over
extended ping tests.

Any advice, anecdotal wisdom, personal experience, etc., that anyone has
had in trying to do this is sincerely welcome and appreciated.

Thank You...

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-- 
Jim Reed
Technology Wrangler
Swift Communications, Inc.
970-683-5646 (Direct)
970-683-5650 (Fax)

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