[asterisk-ss7] Asterisk SS7, SG, MG and MGCP

[Matthew Fredrickson]

voip me wrote:
> Dear Matthew,
>  
> What do you think , how could one improve it then, you think chan_dahdi 
> should speak MGCP or any request show come up to channel then bridged 
> (or in some other way) to an MGCP channel (not the current but a changed 
> MGCP channel) and the rest.

That's basically what I have had in mind.  Either use chan_dahdi or a 
new channel driver which can talk SS7 and can also talk MGCP or 
Zap/DAHDI (and maybe SIP) for bearer control.

> I have another question Matthiew, are you familiar with MGCP, how could 
> one address a channel on gateway?

For analog lines, it is:
aaln/1 at my.gateway.com

For DS0, IIRC, it is:
ds/ds1-1/ds0-3 at my.gateway.com

See rfc3435 Appendix E.1

Matthew Fredrickson


>  
> Regards.
> --
> MSH
> 
>  
> On 13/08/2008, *Matthew Fredrickson* <creslin at digium.com 
> <mailto:creslin at digium.com>> wrote:
> 
>     voip me wrote:
>      > Dear Folks,
>      >
>      > Sorry for my ambigouse subject. I want to set the following
>     solution and
>      > need your idea's and experinces. I want to setup an asterisk box with
>      > one E1 link containing 4 or 5 SS7 signalling links and have two
>     or three
>      > asterisk boxes each with 8 E1 (voice only) as media gateway. What is
>      > your idea's, is it possible, it seems MGCP is for this case but
>     aa more
>      > i look in asterisk MGCP channel less I get what's its usage. Any one
>      > could shed some lights on this topic, im somehow mixed up. How
>     could I
>      > control the media gateway asterisks to tell them which channel has a
>      > call and where it should go?
> 
>     Asterisk's chan_mgcp does not support being a media gateway right now.
>     You can only control media gateways.  Also, Asterisk doesn't currently
>     support signalling reception on anything other than a DS0 directly
>     connected to the machine.
> 
>     You're not going to be able to control media gateways either that are
>     signalled via SS7, since chan_dahdi does not speak MGCP.
> 
>     These are both things that I would like to improve though...
> 
>     Matthew Fredrickson
>     Digium, Inc.
> 
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