From: Robert (k_robert@tsp.lviv.ua)
Date: Thu Mar 11 2004 - 09:20:20 GMT-3
> Cisco Gatekeeper uses TCP port 1719
RAS uses UDP port 1719.RAS is a protocol used between Gatekeeper and
Gateway/terminals ( i.e endpoints ) .
H.225 uses TCP port 1720 ( for session initiation)
RTP/RTCP uses UDP ports as follows : 16384 + ( 4* number of voice channel in
the router) and in general
RTP uses odd port, while RTCP must use the next available even port .
Sincerely
Robert
----- Original Message -----
From: <alsontra@hotmail.com>
To: <joe@martinsweb.org>; 'Yasser Abdullah ' <yasser@alharbitelecom.com>;
<ccielab@groupstudy.com>; Ramasubramanian Sethuraman <snrmanian@hotmail.com>
Sent: Thursday, March 11, 2004 2:22 PM
Subject: Re: VOICE Classification - Class-maps
> Thanks for the responses. For the RS exam, I'm hoping this is it as far
as
> voice port numbers go...
>
> Cisco H.323 uses TCP port 1720
> Cisco VoIP payload uses UDP ports 16835 - 32767
> Cisco Gatekeeper uses TCP port 1719
> SIP uses UDP port 5060
> RTP can be identified by the RTP header
> MGCP port - 1025 through 65535 (not sure how important this is)
> SCCP (not sure)
>
> I can't seem to find all of these port numbers within the docCD, so guess
> memorization is probably the best method of recall. If anyone has any
> comments as to other relevant voice port numbers I would appreciate your
> comments.
>
>
> H.323 TCP 1720
> VoIP payload UDP 16835 - 32767
> Cisco Gatekeeper TCP 1719
> SIP UDP 5060
> RTP RTP header
> MGCP 1025 through 65535 (not sure how important
this
> is)
> SCCP (not sure)
>
>
> Thanks,
> Alsontra
>
>
>
> ----- Original Message -----
> From: "Joe Martin" <joe@martinsweb.org>
> To: "'Yasser Abdullah '" <yasser@alharbitelecom.com>;
> <alsontra@hotmail.com>; <ccielab@groupstudy.com>
> Sent: Wednesday, March 10, 2004 10:29 PM
> Subject: RE: VOICE Classification - Class-maps
>
>
> Also, VoIP comes in protocols other than H.323. It could be SIP, MGCP or
> SCCP which all have different port for call control. Though all of them
use
> the same UDP port range for RTP traffic.
>
> Joe
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Yasser Abdullah
> Sent: Wednesday, March 10, 2004 9:30 PM
> To: alsontra@hotmail.com; ccielab@groupstudy.com
> Subject: RE: VOICE Classification - Class-maps
>
>
> Also, if your voice gateways register with a gatekeeper, you'll need TCP
> port 1719.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> alsontra@hotmail.com
> Sent: Thursday, March 11, 2004 8:08 AM
> To: ccielab@groupstudy.com
> Subject: VOICE Classification - Class-maps
>
> Group,
>
> This question has been asked before, but there was no answer. Forgive my
> repetition...
>
>
> If you need to classify voice and all that goes with it (H323, etc), can
you
> assume that ports 1720 and 16384 - 32767 will encompass voice traffic? In
> general, I'm finding that most voice traffic traverse these udp ports.
>
> For example:
>
> If you asked to classify and set DSCP values on all voip traffic, would
> something of this sort do the trick?
>
> ip access-list extended VOICE
> permit udp any any range 16384 32767
> permit udp any any eq 1720
>
> class-map match-all VoIP
> match access-group name VOICE
>
>
> policy-map QOS
> class VoIP
> set dscp cs5
> class class-default
> set dscp cs1
>
> int e0/0
> service-policy input QOS
>
>
> While this is certainly not all inclusive, it essentially cover most voip
> activities correct? Or do you have to try and use the question to find the
> appropriate port numbers?
>
> Thanks,
> Alsontra
>
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