Re: NetTalk Duo VoIP

[<petem001@xxxxxxxxx>]

"Doug"  a écrit dans le message de groupe de discussion :
8yTjp.2350$Vx7.1653@xxxxxxxxxxxxxxx


"tourman" <robercampbell@xxxxxxxxx> wrote in message
news:9d7b4b1e-1070-4efd-b190-ecce78ef2c95@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Mar 27, 9:04 pm, Jim Rojas <jro...@xxxxxxxxxxxx> wrote:
> Every technology in existence has its problems...nothing should go
> without concern.
>
> POTS lines get garbled or even die in rainy weather.
> VoIP is subject to bandwidth, echoes, and the high compression of data
> streams.
> DSL is just plain too noisy.
> GSM works as long as someone maintains the local cell towers.
> IP works as long as the customer pays their bill.
>
> We do the best we can with what we have.
>
> Jim Rojas
> Technical Manuals Online!http://www.tech-man.com
> 8002 Cornwall Lane
> Tampa, FL 33615-4604
> 813-884-6335

>RHC: Well, I'm going to be testing this device on a DSL high speed
>connection over a POTS line, and it's using Contact ID, so we'll see
>what we see....

What you'll see is how well the device works on your home/office line at the
time of testing.

Unfortunately since its Voip and subject to the same issues as any other
Voip service it won't tell you much about how it will perform in the field
tomorrow, next week or next month.

Other than using it for voice, fax and possibly using it for downloading I'm
not sure what attraction this device holds for anyone in the alarm industry,
if the customer has no land line and has broadband then they probably
already have Voip of some sort and liability wise you would probably be
better off using their Voip (with a suitable disclaimer), rather than you
providing or recommending a Voip device for them to use.

If they have no land line or Voip but have broadband, then in my opinion you
would be better off using an IP communicator.

With the low cost of cellular devices and the low monthly rates available I
prefer to use cellular for backup for those customers who choose to use Voip
for their alarm service.

Doug


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one way to be sure its working ok is to use a router that can do QOS.
(quality of service)


If you program the router properly it will assign a part of the bandwith to
the ip adress and/or the ip port used for the voip device.

One way to have QOS for cheap is using dd-wrt as the firmware of your
router.

on my side I use a buffallo router model whr-hp-g54

even have a strong wifi signal..