nanog mailing list archives
Re: GSM gateways in the US?!?
From: Simon Lockhart <simon.lockhart () bbc co uk>
Date: Mon, 25 Jul 2005 07:59:24 +0100
There are two methods that are obvious to terminate calls into mobile (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 number) Inbound (mobile-to-enterprise): From 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 number 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
Current thread:
- Re: GSM gateways in the US?!?, (continued)
- Re: GSM gateways in the US?!? John Levine (Jul 24)
- Re: GSM gateways in the US?!? Network Fortius (Jul 24)
- Re: GSM gateways in the US?!? John Levine (Jul 24)
- Re: GSM gateways in the US?!? Jon Lewis (Jul 24)
- Re: GSM gateways in the US?!? jkreger (Jul 24)
- Re: GSM gateways in the US?!? jkreger (Jul 24)
- Re: GSM gateways in the US?!? Joe Abley (Jul 24)
- Re: GSM gateways in the US?!? Roy (Jul 24)
- Re: GSM gateways in the US?!? Robert M. Enger (Jul 24)
- Re: GSM gateways in the US?!? John Todd (Jul 24)
- Re: GSM gateways in the US?!? Simon Lockhart (Jul 25)
- Re: GSM gateways in the US?!? Daniel Karrenberg (Jul 28)
- Re: GSM gateways in the US?!? Network Fortius (Jul 24)
- Re: GSM gateways in the US?!? John Levine (Jul 24)