Peter
You have to cover off all your possible points of failure as you would
with any implementation of this level. So points would be the power, the
telco, the server and your lan.
So if your providing 911 service I assume the building has proper power
redundancy ( UPS & generator ). The telco you really can't control but
what redundant paths of service can you receive? ( copper, fiber,
microwave ). The PBX or server you use a high quality server with
redundant power supplies and mirror the drives and if your totally anal
have a second fail over server. Then the last piece is your lan. Again
redundancy, high quality but also QOS and network load /segmentation.
You don't want packets dropping if someone decides to move 3GB from one
server to another on the same subnet.
Your last issue will be code stability. You have to do all tweaking
offline before pushing out into production but this is true of all
mission critical systems. The only time our Asterisk servers (once
pushed into production) have gone offline have been due to
uncontrollable outages ( colo tech accidentally hit data suite power
breaker ) . Besides that only other issues have been with termination
providers but that wouldn't be in your equation.
Now I got to this point and thought, hmm what an I get on google...
typed in "asterisk heartbeat"
First hit:
http://www.voip-info.org/wiki/view/Asterisk+High+Availability+Solutions
Mike
[EMAIL PROTECTED] wrote:
Well said! I suppose another perspective is that if we buy the Televantage
switch and glean the experience of working with a T1, we could then use
that to build a * switch for our message service and connect the two
together thru SIP. Does anyone consider * reliable enough for mission
critical work, say processing 911 calls? That's where it might get a bit scary.
Can't be worse than the ancient PBX and DID line terminators we're running
with now though. Its only a five position call centre so that's a case for *
AFAIK.
Regards,
Peter M.
The Defence:
To the defence, we need to ignore trash talk of salesman such as the Televantage
guy, be aware of insecure sales dudes such as him, and move on & investigate other
companies that are more professional in speech & more sensitive to your business
needs & other prospects. We need to do business with companies that "listen" vs.
talk talk talk and do business with companies that are open to change. Sure it's
toughto stay up to date with technology & other Open Source technologies, but
it'sVERY dangerous to stand still and do nothing.
The Message:
Your message is simple proof that sales trash talk travels faster than the speed of
light, and degrades the reputation of companies such as Televantagewhen their first
line of defence is not very professional. I commend you forposting the bluntly
honest message & openly sharing this with us, which has been received by over
100+ Asterisk enthusiasts, some of whom are using the technology to generate
revenue. Had* not been open source, this telecom consulting opportunity would not
have been possible for the enthusiasts and the little guys that do not have multi-
millions of dollars as backup.
The Suggestion:
My only suggestion is that us hardcore Asterisk supporters be aware of other VOIP
technologies & educate our prospects and clients with * & related products,
eventually allowing the customer to make a decision.Chances are they will go for
the Asterisk solution when we speak so passionately about it - and the fact of the
matter is that Asterisk for small to medium business settings, is likely the most
flexible & reasonable solution. The other fact hard for larger companies to bite is
that * is gaining STRONG ground!
The Lesson Learnt:
From this Televantage Trash talk, we also have a good lesson to learn and that is we
must always be sensitive to our clients needs. If we trash talk about a car, chances
are he is driving or planning to purchase the make & model of the car we are
trashing :).
The answer:
"So why would he say that his programming group had to do $35000 worth of custom
programming to get a PRI working in Halifax NS? "
To call someone a liar or incompetent, is a very strong and harsh word. So I will say
he either does not know what he is talking about, or his programming group is not
very knowledgeable, or he simply wants to show off that he is a hotshot. Maybe all
the above.
The Question:
Who's next? Who dare trash Asterisk?
Cheers!
Reza.
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