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>>>>> "John" == John Lange <[EMAIL PROTECTED]> writes:
John> First of all, it makes the client feel like the system is
John> inherently unsafe and inferior to other solutions and this is
John> not true.
I don't see your point.
PBXs that aren't planned with emergency use in mind are inherently
unsafe. This has nothing to do with VoIP.
As an example of such a failure to think, Carleton university, for
instance, renamed "security" to (politically stupid) "safety services"
in their phone book. Guess what --- the 911 service from a payphone on
campus leads to the city system, and they couldn't figure out who to
call. (police did roll). 911 from a campus phone gets you to right
place, ringing through to city 911 if there is no reply. That was with a
stock PBX!
John> What I'm curious about is why suddenly this became an issue
John> only since VoIP since many (most?) PBXs do not work when the
John> power is out (mainly because digital handsets require power)
John> and this has been a common implementation since at least the
John> 80s.
That's right, why I emphasis the point is that VoIP PBXs are
getting installed as the *FIRST* and only system.
Some of our customers planned to have *NO* PSTN lines. (We advised
them differently already) In fact, it was their requirements to do an
emergency plan that made them ask us, "what about 911", and when we
asked if they couldn't just get out, the answer was, "doesn't satisfy
insurance". 911 isn't just for fire.
John> It also doesn't make much practical sense in anything except a
John> very small office. Running to the red POTS phone on the far
Which he said he had.
John> If phone service in a power failure is truly a concern for the
John> client then put Asterisk and a switch with POE (power over
John> ethernet) on a UPS. Then buy phones that support POE and you
In a larger office, my advice would be different --- get a UPS and do
PowerOverEthernet to the handsets, just like you said.
- --
] ON HUMILITY: to err is human. To moo, bovine. | firewalls [
] Michael Richardson, Xelerance Corporation, Ottawa, ON |net architect[
] [EMAIL PROTECTED] http://www.sandelman.ottawa.on.ca/mcr/ |device driver[
] panic("Just another Debian GNU/Linux using, kernel hacking, security guy"); [
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