[asterisk-ss7] Re: Turning up A-Links

[Matthew Fredrickson]

On Feb 2, 2007, at 4:29 PM, Michael Tague wrote:

> Hi,
>
> The thing that I would like to set up is essentially Asterisk as a 
> Media
> Gateway Controller (MGC) that understands SS7.  The MGC would then 
> control
> Media Gateways such as the Cisco 5400 using MGCP (Media Gateway Control
> Protocol).
>
> I know Asterisk has some implementation of MGCP and I thought, perhaps
> mistakenly, that via MGCP Asterisk could control a Media Gateway.  I 
> was
> hoping that with libss7 Asterisk would then be able to communicate to 
> the
> SS7 network and control the Media Gateways.
>
> It sounds like Asterisk can understand SS7 and locally - within the 
> box -
> answer and originate calls on trunks plugged directly into the 
> Asterisk box.
> But, from your answer, it looks like Asterisk can't then use MGCP to 
> control
> another Media Gateway?

No.  In order to do that, the channel driver that you use to terminate 
your SS7 signalling link would have to be able to understand MGCP as 
well.  Neither libss7/chan_zap nor (AFAIK) chan_ss7 is able to talk 
MGCP to media gateways directly.

>
> Would you have any speculation about just how hard it would be to make 
> it
> work?  That is, is it a matter of some relatively simple functionality 
> not

You would have to add MGCP support to either chan_zap or chan_ss7.

Matthew Fredrickson