[ale] [OT] Building a home 'landline' using the cellular network

[Stephen R. Blevins]

On a non-technical level, give some consideration to making sure your
system will interface with E-911 correctly.  In a moment of "panic" one
of your users may try to use this system to get emergency help.  Also,
what are your expectations for the system if the power goes our.
Typically, the POTS system works when the power is out.  Just a thought.
 YMMV

Stephen R. Blevins
stephen.r.blevins at gmail.com

On 1/5/20 4:03 PM, Robert Tweedy via Ale wrote:
> Hi Ale,
> 
> I'm entertaining an idea (currently months/years out on implementation, should it turn out to be feasible) of trying to build a simple in-home phone system that would run over a cellular network (specifically one of the GSM networks like AT&T or T-Mobile, so that I could simply swap out the SIM card should I ever want to change providers), and I was wondering if anyone else here has tried to do this and could offer any pointers.
> 
>>From what I've looked at so far, it looks like I'd need a GSM gateway or similar device to ultimately make the connection to the cellular network, along with a Linux system running something like Asterisk or FusionPBX and the associated cards/hardware to interface with the POTS wiring inside the house (just looking for a simple party-line style setup at the moment; no need to handle multiple extensions/numbers and no desire to buy expensive VoIP/business-class phones). Any suggestions on where to start with something like this, or any pitfalls that you may have experienced when setting up something like this yourself?
> 
> Thanks,
> Robert
> 
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