On 8/11/2015 7:08 PM, Chuck McCown wrote:
I am compiling a list of sip/voip issues I have run into over the
years. I am going to get beaten up by some bureaucrats tomorrow
morning and I want to have a list to defuse them before the oral part
of the proceedings start.
I am going to say that ATA/SIP/VOIP is not suitable for the following:
Fax Machines (don’t even get me started on this, tried to do a
doctor’s office and pharmacy once....)
TDD The teminal that deaf people use. Does anyone know if a TDD will
work on a garden variety ATA? I don’t have one I can test with.
Dial up modems....
Fire Alarm control panels (the monitoring companies refuse to even
hook it up if you tell them it is VOIP).
Burglar Alarms .... ditto
Well....we can usually make alarms work. I found a building code once
that said any electronics required to make an alarm line work needed 8
hours of backup power. A POTS line has that by default since they're
powered from the CO. Same deal with elevator phones. Any smart alarm
company is not going to bet on a VoIP line. Any smart ITSP is going to
say, "geez you really should have a POTS line for that." Anybody with a
tight bottom line is going to try VoIP anyway because it's cheaper.
I wonder about heart monitors that you wear and have the results
phoned in.
I've had people try it. Like any other modem: if it works you're lucky.
Dial phones. I have never tried to use a pulse dial phone on an
ATA/SIP unit. I wonder if it would work.
Any others?
Credit card machines. Might work, might not.
ATM.
I remember a customer with an ATM, credit card machine, and alarm system
all on his VoIP line. I'm sure we told him "no modems or fax machines",
but it does not register with people that those other devices count as
modems. Sadly, it actually worked most of the time, but when one didn't
work, they all didn't work.
The only other thing is I've had more anomalies with call completion
using VoIP carriers. I think it came down to LCR and we eliminated it
when we said, "Just take our money and stop doing LCR."
Oh....and E911. Theoretically the end user can move the ATA without
telling you and screw up E911.
