From: Marvin Greenlee (marvingreenlee@yahoo.com)
Date: Fri Jan 09 2004 - 23:59:31 GMT-3
"UDP/TCP Ports Used for VoIP
Below are the UDP/TCP ports used for VoIP, H.323, SIP,
and MGCP.
For H.323
Unicast GK discovery to UDP port 1718.
Multicast GK discovery to 224.0.1.41 UDP port 1718.
RAS to UDP port 1719.
H.225 (call signaling for hosts) to TCP port 1720.
H.245 (capability exchange) to a negotiation in the
range of TCP ports 11000 through 65535.
RTP audio stream to UDP ports 16384 through 32767.
For SIP
Either the UDP or TCP port for the signaling to port
5060.
RTP audio stream to UDP port 16384 through 32767.
User agent may register with a local server on the
startup by sending out a REGISTER request to IP
address 224.0.1.175 (all SIP servers multicast address
sip.mcast.net).
For MGCP version 0.1
MG and CA signaling to UDP port 2427.
RTP audio stream to UDP port 16384 through 32767.
For MGCP version 1.0
MG and CA signaling to MG through UDP port 2427 and CA
through UDP port 2727.
Note: This is because some CAs have the MG
functionality built in them.
RTP audio stream to UDP port 16384 through 32767.
Note: RTP port selection is MG specific. Depending on
the number of voice ports on the MG, the RTP port
range is selected. It does not go as high as 32767 and
the range can be as small as 256.
"
Reference - Cisco - VoIP Traversal of NAT and Firewall
http://www.cisco.com/en/US/tech/tk652/tk701/technologies_tech_note09186a00800f2853.shtml
Sincerely,
Marvin Greenlee, CCIE #12237
Network Learning, Inc.
Senior Technical Advisor
marvin@eccie.com
--- Nathasha Aleyevka <naleyevka@yahoo.com> wrote:
> Hi,
>
> I want to prioritize voice control traffic and
> voice traffic, can I write a class-map
>
> class-map VOICE
>
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