From: Brian Lodwick (xpranax@xxxxxxxxxxx)
Date: Thu Mar 07 2002 - 20:23:22 GMT-3
Ab,
You might want to take a better look at these articles.
http://www.dtr.com.br/cdrom/cc/sol/mkt/ent/ndsgn/voice_dg.htm
The RTP and RTCP are specified in the H.323 specification. After the H.323
call setup and control process is completed, audio and video packets are
sent via User Datagram Protocol (UDP) (see Table 4). To assist with
streaming audio and video, the specification calls for a RTP header. A RTP
header contains a time stamp and sequence number, allowing the receiving
device to buffer as much as necessary to remove jitter and latency by
synchronizing the packets to play back a continuous stream of sound.
Table 4 : UDP Port Numbers
>From To Application Priority
0 16383 Not specified Lowest
16384 32767 Audio Highest
32768 49151 Whiteboard Medium
49152 65535 Video Low
http://www.cisco.com/warp/public/788/voice-qos/voip-mlppp.html
The range of UDP destination ports. A number, which added to the
starting-rtp-port-number, yields the highest UDP port number. For VoIP set
this value to 16383 (32767 - 16384 = 16383)
http://akson.sgh.waw.pl/~chopin/ios120/120newft/120t/120t5/iprtp.htm
The IP RTP Priority feature does not require that you know the port of a
voice call. Rather, the feature gives you the ability to identify a range of
ports whose traffic is put into the priority queue. Moreover, you can
specify the entire voice port range---16384 to 32767---to ensure that all
voice traffic is given strict priority service
I guess I has the video and whiteboard switched around.
>>>Brian
>From: "Ab Bulei" <abasima2002@hotmail.com>
>To: xpranax@hotmail.com
>Subject: Re: Voice Port numbers
>Date: Thu, 07 Mar 2002 16:23:03 -0500
>
>
>voice udp range is 16384- 16484 and voice tcp port is 1720 if my memory is
>correct.
>
>
>>From: "Brian Lodwick" <xpranax@hotmail.com>
>>Reply-To: "Brian Lodwick" <xpranax@hotmail.com>
>>To: ccie@investorsgrp.com, billgreenwood@earthlink.net
>>CC: ccielab@groupstudy.com
>>Subject: Re: Voice Port numbers
>>Date: Thu, 07 Mar 2002 12:19:37 +0000
>>
>>I believe the 3 UDP port ranges for RTP (VoIP) traffic are.
>>
>>Voice 16384 - 32767
>>Video 32768 - 49151
>>Whiteboard 49152 - 65536
>>
>>>>>Brian
>>
>>
>>>From: "Shadi" <ccie@investorsgrp.com>
>>>Reply-To: "Shadi" <ccie@investorsgrp.com>
>>>To: "Bill Greenwood" <billgreenwood@earthlink.net>
>>>CC: "ccielab" <ccielab@groupstudy.com>
>>>Subject: Re: Voice Port numbers
>>>Date: Thu, 7 Mar 2002 12:01:07 +0200
>>>
>>>So VOIP is from 16,383 - 20,000 not from 16384 to 32767????
>>>
>>>
>>>Is that true?
>>>
>>>
>>>----- Original Message -----
>>>From: "Bill Greenwood" <billgreenwood@earthlink.net>
>>>To: <armreg@netscape.net>; ""Michael C. Popovich""
>>><mpopovich@layer3.biz>;
>>><ccielab@groupstudy.com>
>>>Sent: Thursday, March 07, 2002 5:51 AM
>>>Subject: Re: Voice Port numbers
>>>
>>>
>>> > I was thinking the VoIP ports where 16384 to 32767
>>> >
>>> > ----- Original Message -----
>>> > From: <armreg@netscape.net>
>>> > To: ""Michael C. Popovich"" <mpopovich@layer3.biz>;
>>><ccielab@groupstudy.com>
>>> > Sent: Wednesday, March 06, 2002 10:12 PM
>>> > Subject: RE: Voice Port numbers
>>> >
>>> >
>>> > > MP,
>>> > >
>>> > > I do not have the link on the Doc CD, but here is what I remember
>>> > >
>>> > > TCP port 1720 for H.323 gateways
>>> > > TCP port 11,000 - 11,999 for H.225 and H.245
>>> > > UDP port 16,383 - 20,000 for VOIP
>>> > >
>>> > > Thanks
>>> > >
>>> > > Antonio
>>> > >
>>> > >
>>> > >
>>> > >
>>> > > "Michael C. Popovich" <mpopovich@layer3.biz> wrote:
>>> > >
>>> > > >Anyone have a link on the DOC CD that tells me what ports are
>>>needed
>>>for
>>> > > >call-setup, ring-tone, H.323, H.245, etc. relating to voice?
>>> > > >
>>> > > >I am having difficulty locating it.
>>> > > >
>>> > > >Thanks
>>> > > >
>>> > > >MP
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:56:56 GMT-3