Re: [hylafax-users] T.30 T2 timeout, expected signal not received

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Arshavir Grigorian wrote:

> Pardon my ignorance, but from the following excerpt from the docs, it
> looks like Agere chipsets should work. However, I guess the keywords
> are "new" and OCM.


Well, since I was the docs writer in this case the problem with the 
documentation is that I haven't had any non-functional Agere hardware 
with which to work.  I don't doubt that it could exist... only I haven't 
had the opportunity to use such a thing.

> Is there any way to know whether a specific model
> is "new" and not OCM?


If the website marketing does not specify what chipset model the modem 
uses you would need to (should) contact the manufacturer by some other 
means to get that information.

> The reason I am asking is that I recently posted
> a question on the mailing list about a specific modem I thought about
> buying specifically for Hylafax and I am not quite sure whether it
> will work or not.
> And considering that no one has responded, I am assuming that it can't
> be determined what chipset the modem has just by its model. Is this
> correct?
>
> "... modems with a new Lucent/Agere chipset (a.k.a. "Venus" found on
> MultiTech, Zoom, and MainPine modems) all work very well in Class 1
> and 1.0 (if the modem reports support for it via the AT+FCLASS=?
> command) ..."


Hrmm... maybe I need to change that word "new" to something else.  The 
Venus chipset isn't "new" any longer.  Agere has replaced the Venus 
chipset, and I haven't had the opportunity to test any newer-than-Venus 
equipment.  Neither have I been able to test any Agere OCM equipment.

> I guess my other question is, is there any way to know whether a modem
> supports Class 1 and 1.0 before installing it (vs running
> AT+FCLASS=?).


Again, if the website marketing material does not say you would/should 
contact the manufacturer and they should say.  Be aware that Class 1.0 
means different things to different manufacturers.  So if you're 
specifically looking for V.34-Fax/SuperG3 support ask specifically about 
that feature directly.

> I buy my equipment from the net and you almost have to
> buy blind because most of the ways to determine some parameter or
> another is by having it installed and running commands against it.


Making a purchase via the internet does not necessarily mean a "blind" 
purchase.  If you've never used a piece of equipment before you aren't 
any better off holding it in your hands on a store room floor than you 
are staring at a web page.  In fact, I generally find myself to be 
better-informed of my web purchases.

Lee.


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