Re: [hylafax-users] Faxing over VOIP?

["Peter Verhoeven" <Peter@xxxxxxxxxxxxxxxx>]

I'm only wanting VoIP calls, and only outbound calls at that, so I
didn't think therewould be any POTS involved. The bit that I'm not quite
clear on yet is how to get the Asterix talking to my VoIP provider.
Would it depend on the VoIP provider?

-----Original Message-----
From: hylafax-users-bounce@xxxxxxxxxxx
[mailto:hylafax-users-bounce@xxxxxxxxxxx] On Behalf Of A J Stiles
Sent: Thursday, 16 November 2006 7:21 PM
To: hylafax-users@xxxxxxxxxxx
Subject: Re: [hylafax-users] Faxing over VOIP?

On Thursday 16 November 2006 06:04, you wrote:
> Ok, so here I'm reading the book "Asterisk: The Future of Telephony", 
> and so far very exciting, but I'm wondering, and maybe this is getting

> ahead of myself, but what's the missing piece of the puzzle between 
> asterix and voip provider?
>
> Is just an internet connection going to be all that's required? Sounds

> too good to be true...

All you need is someone to provide a SIP to POTS gateway  (or
alternatively, an ISDN telephony card and an E1 line).  That allows you
to receive calls from, and make outgoing calls over, the PSTN.  You can
do SIP to SIP (actually SIP to IAX at one end, IAX to IAX over the net
and IAX to SIP at the other end; but the servers take care of all that)
over the internet without a gateway, but all parties will need SIP
telephones.

ISDN has a hefty up-front cost  (after all, it's basically a trunk line,
and the equipment that plugs into it needs correspondingly more
regulatory approval since it can do more damage);  but it does work out
cheaper the more you use it  (what you pay for calls doesn't have to
cover maintenance of some of the equipment that would ordinarily be
inside the exchange.  It is now at your end; you are digitising the
calls and time-domain multiplexing them onto that trunk line).  And
don't forget, depending upon circumstances, you might be able to sell a
gateway service yourself and recoup some of your costs.  Be warned,
though; comms reselling is a full-on business in its own right, not just
a sideline.

--
AJS

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