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<DIV><FONT size=2>I too wish there was a simple solution to this. A SCCP proxy
would be great.</FONT></DIV>
<DIV>--------------------------------------------------------------------------------<BR>Lelio
Fulgenzi, B.A.<BR>Network Analyst (CCS) * University of Guelph * Guelph, Ontario
N1G 2W1<BR>(519) 824-4120 x56354 (519) 767-1060 FAX
(JNHN)<BR>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
<BR>"I had a coffee and Coke at lunch today...and now, I've got more jitter than
an<BR>IP phone on a long haul 10base2
connection"
LFJ</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Scott.Voll@wesd.org href="mailto:Scott.Voll@wesd.org">Voll, Scott</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=jsteinberg@gmail.com
href="mailto:jsteinberg@gmail.com">Justin Steinberg</A> ; <A
title=cisco-voip@puck.nether.net
href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, January 05, 2006 11:30
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: [cisco-voip] Voip NAT
Traversal with CCM</DIV>
<DIV><BR></DIV>Justin--<BR><BR>I feel your pain. We have just gone
through the same process. We have<BR>went to using 836 DSL routers
because we couldn't get those cheap<BR>actiontec things working.
<BR><BR>Scott<BR><BR>-----Original Message----- Justin
Steinberg<BR><BR><BR>I'm getting more and more requests for telecommuters who
wish to have<BR>an IP phone at their residence. For ease of management I
would prefer<BR>to just give the remote users an IP Phone and configure the
phone with<BR>alternate TFTP to contact a public IP address of a CCM tftp
server. <BR>Of course the CCM would have to be firewalled
appropriately.<BR><BR>The problem is that most of these users will plug their
IP phone into<BR>a cheap dsl/cable NAT router which will lead to the problem
of no way<BR>/ one way voice. The signalling will communicate with
callmanager and<BR>the audio with a voice gateway or another IP
phone. Thus with the<BR>phone behind a "dumb" NAT router this
solution won't work.<BR><BR>Is there any solution that will get the job done
without requiring any<BR>hardware on the end user side? Any solution
that requires purchasing<BR>a 79xx phone and a VPN capable router isn't going
to fly. The<BR>hardware costs and maintenance support required will not
realize a<BR>cost savings over a PSTN line.<BR><BR>I know SIP has session
border controllers but I'd rather not have to<BR>worry about what phones are
running SIP and what phones running SCCP.<BR><BR>Are there any Session Border
Controllers for SCCP or any other way to<BR>get past this NAT
issue?<BR><BR>I've read a little about IOS NAT Application Layer Gateways but
I'm<BR>not an expert in that area.<BR><BR>What are other people
doing?<BR><BR>Thanks<BR><BR>Justin<BR><BR>_______________________________________________<BR>cisco-voip
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href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</A><BR><A
href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</A><BR><BR>_______________________________________________<BR>cisco-voip
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