Re: [hylafax-users] large multiport systems

[Lee Howard <faxguy@howardsilvan.com>]

On 2003.08.22 20:19 Darren Nickerson wrote:

> Examples of (b) (which we recommend for smaller deployments where
> budget is
> the primary driver):
> 
>    (i)  MultiTech V.92 V.34 fax modems
>    (ii) Comtrol RocketModemIIs

New MultiTechs are great modems and are wonderfully supported by 
MultiTech.  MultiTech's adherance to T.31 and T.32, in particular, is 
quite encouraging.  Likewise, I have found RocketModems to be quite 
reliable hardware in Class 1.  (I have used the older ones very little 
in Class 2, however.)  Despite this, I have small production servers 
using PCTel Linmodems (one per server) at the insistence of the client, 
in Class 1, and these servers have performance records that rival 
everything else I have going - including ECM support (but not MMR until 
I get a G4-decoder implemented also).  I don't think that this is so 
much a factor of the hardware, per se, as it is an indicator of the 
power behind Class 1, HylaFAX's Class 1 implementation, and the beauty 
of having cheap and fast CPUs and RAM to adequately perform this work 
in the software.

So after some of the "advanced" features mature a bit more, I won't be 
surprised to find anything running Class 1 properly to perform just as 
well as anything running "advanced" features in Class 2, despite the 
pricetag.

> You're not up to date on deployment statistics ... V.34 is much more
> common
> than that. It's estimated that about 60% of all laser fax machines and
> 25%
> of inkjet models sold today are V.34 enabled. By 2005, as much as 75%
> of all
> laser fax machines and 50% of all inkjet fax machines sold will be
> V.34
> enabled.

In my experience V.8 handshaking (done with V.34 faxing) takes longer 
than handshaking with non-V.34 faxing.  And therefore V.34 only proves 
beneficial if there is enough data to send that the increased bitrate 
will compensate for the V.8 handshaking lag.  Generally speaking a 
one-page MMR-compressed page, such as this gentlemen is discussing, 
will not contain enough data to make V.34 worthwhile.

Lee.

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