[82615] in North American Network Operators' Group
Re: GSM gateways in the US?!?
daemon@ATHENA.MIT.EDU (Simon Lockhart)
Mon Jul 25 03:00:03 2005
Date: Mon, 25 Jul 2005 07:59:24 +0100
From: Simon Lockhart <simon.lockhart@bbc.co.uk>
To: John Todd <jtodd@loligo.com>
Cc: "Robert M. Enger" <enger@comcast.net>, nanog@nanog.org
In-Reply-To: <p06020420bf0a2a63f91a@loligo.com>
Errors-To: owner-nanog@merit.edu
> There are two methods that are obvious to terminate calls into mobile=20
> (GSM) networks in North America:
Just to give you a .uk experience, I don't know the technical details of how
this is implemented, but from a user's point of view:
Outbound (enterprise-to-mobile):
My desk phone extension is 01-37720. If someone on the corporate PBX calls
071-37720, that's routed to my cell phone. Full internal CLID works (so my
cell phone shows the extension of the caller, rather than an external numbe=
r)
Inbound (mobile-to-enterprise):
=46rom my cell phone, I can just dial internal extensions (e.g. I can dial
0137720 on my cell phone, and my desk phone rings). This would appear to be
the most ugly hack on the part of the mobile carrier, as it matches on numb=
er
length to determine if it's an "internal" or an "external" call. However, it
does mean that my cell phone appears to be part of the corporate PBX.
According to our Intranet, this gives 30% call savings.
Hope this helps,
Simon
