Archived from groups: comp.dcom.voice-over-ip (
More info?)
"G Amer" <newPS2@Nospam.EBAY.net> writes:
> I would like to get onto FWD what is the best way to start on FWD ..
> equipment wise?
>
> I was thinking of buying either the Budgetone 101 or the Handytone 486 but
> cannot dcide and require guidance on pros/cons?
Get the Bugdetone. ATA's are a bit of a hack-job. They require the
ATA electronics to needlessly convert the nice 4-wire signal to a
2-wire signal in order to deliver it to the analog phone. The analog
phone then has to split the signal again with another identical
transformer in reverse. Each of these conversions contribute to
far-end echo.
Strangely the Bugetone can be had cheaper that the Handytone. I'm not
sure why that is.
BTW. Cisco has some nice whitepapers on their site about the
challenges of interoperating VOIP with POTS. In short, calling a POTS
line from VOIP virtually guarantees you'll get an objectionable echo
and need to remove it in software. The more you do to eliminate
far-end echos the better. I can't find the Cisco reference, but this
has some of the same info:
http://www.iec.org/online/tutorials/voice_qual/topic06.html
-wolfgang
--
Wolfgang S. Rupprecht http://www.wsrcc.com/wolfgang/
New toy: Voice over ip phone. Sounds much better than an analog phone.
http://www.wsrcc.com/wolfgang/voip.html