[Noisebridge-discuss] Access control & Safety, both personal and general space.

Florian Friesdorf flo at chaoflow.net
Wed Feb 8 11:29:41 PST 2012


On Wed, 8 Feb 2012 11:25:30 -0800, Jonathan Lassoff <jof at thejof.com> wrote:
> On Wed, Feb 8, 2012 at 11:20 AM, Shannon Lee <shannon at scatter.com> wrote:
> > I kind of like the idea of calling a German phone number and letting it ring
> > in order to open the gate.
> 
> Ditto, it could be a fun feature to have (being German and all).
> However, I think that having a number that anyone can call that will
> open the gate is even *worse* than having people get buzzed in and not
> greeted. With such a system, responsible persons at the space wont
> even know the gate was buzzed.

I think the idea here is caller-id.

Happy to help with registering.

> > It'd be even better if we could rig it so you had to call, let it ring a
> > specific number of times, hang up, then call back...
> 
> Unfortunately, it's not possible to accurately count (as a call
> receiver) how many rings a caller has heard, especially in the case of
> SIP. The ringing state is signalled and the ringing synthesized,
> rather than being an audio stream that both ends can see.

Didn't know that but explains past experiences.

-- 
Florian Friesdorf <flo at chaoflow.net>
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