Re: voip port nubmers

Imran,

RTP does not have ports, these are UDP ports. The best and the most accurate
way to match on Voice traffic is to use the RTP payload type.

On Tue, Aug 9, 2011 at 2:57 PM, Dale Shaw <dale.shaw_at_gmail.com> wrote:

> Hi,
>
> On Wed, Aug 10, 2011 at 7:32 AM, imran ali <immrccie_at_gmail.com> wrote:
> >
> > is their any reserved port for VOIP traffic ? some docs says 16384 to
> > 32767.... is it going to choose any port from this range.
> >
> > does it uses UDP or RTP ?
>
> "VoIP traffic" could mean a lot of things, including voice
> media/payload (e.g. RTP) and/or signalling (e.g. SIP).
>
> For RTP, no, there are no 'reserved' ports. RTP is transport
> independent - it is typically carried on top of UDP/IP but it doesn't
> have to be. When carried on top of UDP/IP, RTP should use
> even-numbered ports while RTCP should use the next highest
> odd-numbered port.
>
> The port ranges used vary between vendors/applications.
>
> Cheers,
> Dale
>
>
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