RE: OT : user in our Building can't heare the user in the other

On Wed, Jun 22, 2011 at 16:54:07, Joe Astorino wrote:
> Cc: ccielab_at_groupstudy.com
> Subject: Re: OT : user in our Building can't heare the user in the
> other Building
>
> Voice stream is RTP which is carried inside UDP.
>
> On Wed, Jun 22, 2011 at 4:50 PM, -Hammer- <bhmccie_at_gmail.com> wrote:
>
> > OK. Being a firewall guy I love when people blame the firewall. I'm
> > not saying it's not the firewall but isn't RTP a TCP transport layer
> > protocol? I'm not a voice guy so please don't bash me too much. Do
> > the phones make independent connections (like a send and receive
> > channel) to each other? Which part is stateless?
> >
> > -Hammer-
> >

Call setup doesn't seem to be an issue and if it's a Cisco CM solution, then UDP 16384 - 32767 range for RTP needs to be permitted through the firewall from side that can hear towards the side that cannot.

-ryan

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Received on Wed Jun 22 2011 - 21:00:10 ART