Probs using 2-D MR on transmission

[Glenn Burkhardt <glenn@aoi.ultranet.com>]

>  From: Fred Meyer <fred@mediswitch.co.za>
>  Hi folks,
>  
>  ...i'm using HylaFAX v4.0pl1 build from source on a Linux box.
>  The Faxmodem is a MultiTech MT2834ZDXI, which should support 2-D MR
>  transmissions.
>  

Not all ZDX modems support 2D encoding.  Models more than a year or two
old probably do not.  Check by issuing this query:

AT+FDCC=?

The response from a newer model (firmware rev 2.13A or 3.13A) will be

+FDCC=(0-1),(0-5),(0-4),(0-2),(0-2),(0),(0),(0-7)
                                ^
The fifth item                  |
is the encoding capability of the modem.  If this value is '(0)', your
modem only supports 1D encoding.

MultiTech upgraded my modem's firmware for free - give their tech
support line a call.