Subject: [Megaco] Why separate Signaling Gateway from MGC?

From: "Patrick Lam" <[email-masked]>
Date: Sun, 9 Dec 2001 23:11:46 -0800

Hi:

I hope these will be the right groups to ask this question ..... :)

I have done some research on SS7 Signaling Gateways and MGCs.  I found an interesting similarities among most vendors:  the SG and MGC are usually separated into physically differen boxes.  While I understand that the scalability of the MGC might be the reason that the SS7 has to be separated from it, but I really want to know why the vendors can't combine the functionalities of SG and MGC together into one box?

Why not have the SG decode all the ISUP and do MGCP and H.323 all in one box?  What's the advantage of having a SG to convert SS7 to Sigtran, and then having MGC convert Sigtran to H.323 and do MGCP?

Thanks very much in advance,

Patrick.