[cisco-voip] for voip connection with an isp which settings

[Justin Steinberg]

You will need session border controller / IPIPGW.  Sort of like a 'proxy'
for voice to your ISP.  Your ISP talks with a public IP on the IPIPGW and
that terminates the ISP leg and originates a new leg on the inside of your
network.

www.cisco.com/go/sbc



On 3/30/07, gokhan senol <gokhanciscottl at yahoo.com> wrote:
>
> Hi
>
>
>
> i use ccm 4.1.3 in lan. But also i made an aggrement with an isp(i have
> already have internet conection with the same isp) so that i will use their
> backbone for international calls.
>
> CCM is behind a FW. Also for pstn calls i have on 2821 gateway . CCM and
> my gateway has mgcp connection
>
>
>
> what should i do on FW and CCM for route my international calls to the
> isp/
>
> How the ip phones will send up packets to the softswitch of isp
>
> Also which ports for ip phones and CCM do i have to open from firewall
>
>
>
> design is below
>
>
>
> CCM > CISCO2821 gateway(mgcp) > ip phones
>
>
>
> Firewall > internet router with ISP
>
>
>
>
>
>
>
>
>
>
>
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