RE: Matching Voice Signalling traffic

From: Kelly, Russell G (Russell_Kelly@eu1.bp.com)
Date: Thu Sep 30 2004 - 12:38:22 GMT-3


2748 is the softphone to callmanager setup port.

See link below for additional ports for CCM 3.3

http://www.cisco.com/en/US/customer/products/sw/voicesw/ps556/products_t
ech_note09186a00801a62b9.shtml

But as Scott said, not too impt for lab

Cheers
Russ

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Morris
Sent: 30 September 2004 15:31
To: 'David Duncon'; ccielab@groupstudy.com
Subject: RE: Matching Voice Signalling traffic

H.323 voice (your voip dial peers) will use TCP 1720 as the signalling
(H.225 portion).

TCP 2000-2002 is the Cisco skinny stuff for the IP phones
I have no idea where 2748 comes from though. TCP 2428 (and UDP 2427) is
used for MGCP controls. You don't have MGCP on the R&S lab.

I wouldn't stress out about it. Not a core topic here. If you are
looking to go for the Voice CCIE, I'd know those ports plus the H.245
ones, SIP and GK as well. Just a thought. But otherwise, no worries.
:)

HTH,

 
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
CISSP, JNCIP, et al. IPExpert CCIE Program Manager IPExpert Sr.
Technical Instructor swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
 
 

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
David Duncon
Sent: Thursday, September 30, 2004 9:02 AM
To: ccielab@groupstudy.com
Subject: Matching Voice Signalling traffic

Hello Group,

I am little unsure on the best way to *match* the Signaling traffic.

In the recent past I have a seen a config where the author has used to
match the destination port greater than TCP 3000 , equal to TCP 2000 &
2748. And also equal to TCP 1720.

Can some please explain why these ports are necessary to match signaling
traffic. I was impression that signaling only uses TCP 1720 :(

And also like RTP using the *even* ports from 16384 to 32768 , I was
impression that Signaling uses *odd* ports in the same range ??

I appreciate any clarification on the above queries :-)

Thanks in advance

David.



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