When sending faxes with US-Robotics and 3Com modems the transmission error 51, 52 or 54 occurs.

December 1, 2007

This is a known problem that is caused by a bug in the modem software (firmware). This problem typically occurs with certain types of US-Robotics and 3Com modems. You usually can solve this by running the modem in fax class 1 mode.

The modem does not detect the acknowledgement signal for a successful page transmission from the remote fax machine when this error happens, so the fax is transmitted multiple times, depending on the number of transmission attempts configured in ActiveFax.


Cornelia Wegmueller, ACTIVEFAX Customer Support
INTERTRADE ENTERPRISES LTD :: Blegistr.25 :: CH-6340 Baar/Switzerland
Phone: +41 44 5866974
Fax: +41 44 2742350
mailto:support@activefax-distribution.com
http://www.activefax-distribution.com


ActiveFax: recommended modems & boards

December 1, 2007

ActiveFax can be used with the following types of modems, ISDN boards and fax boards:

Fax modems that support fax class 1, 2 or 2.0
ISDN boards that support the T.30 (Fax Group 3) protocol
Diva Server boards from Eicon
Fax boards from Brooktrout
Fax boards from Intel/Dialogic (Cpi series)
VoIP/FoIP (Voice over IP/Fax over IP)
Avoid low-cost modems
In general, we recommend to avoid using low-cost modems for faxing, since such modems are usually only tested for data and Internet connections and do not work very reliable in fax mode. Since a modem has do establish connections to hundrets of different fax machines, using low-cost modems often causes problems when connections to certain types of fax machines cannot be done.

We recommend the following modems, ISDN boards and fax boards to be used with ActiveFax:
Analog Modems
Aztech 56k Turbo 2
Diamond Supra Express 56e Pro
Elsa Microlink 56k
Elsa Microlink 56k Office
Elsa Microlink 56k Pro
Multitech MT5600ZDX
Multitech MT5634ZBA
Multitech MultiModem II
US-Robotics 56k (only fax class 1)
US-Robotics Sportster (only fax class 1)
Zyxel Elite 2864
Zyxel Omni 56k
Zyxel U-1496
Zyxel U-336
Zyxel U-90
Analog Multi-Modem Boards
Eicon Diva Server Analog-4P/8P
Equinox Multimodem Adapters
Comtrol RocketModem
Multitech Multimodem ISI
ISDN Modems and ISDN Boards
AVM B1 V4.0 (1 x S0)
AVM C2 (2 x S0)
AVM C4 (4 x S0)
AVM Fritz!Card (1 x S0)
Digi Datafire Micro V (1 x S0)
Digi Datafire QuadMicro (4 x S0)
Eicon Diva Pro 2.0 (1 x S0)
Eicon Diva Server BRI 2M (1 x S0)
Eicon Diva Server 4BRI 8M (4 x S0)
Eicon Diva Server PRI 30M (1 x PRI)
HST Saphir III (1 x S0)
HST Saphir III ML (4 x S0)
HST Saphir V (1 x PRI)
Intelligent Fax Boards
Brooktrout TR114 Series
Brooktrout TR1034 Series
Brooktrout Trufax Series
Brooktrout Trufax-BRI Series
VoIP/FoIP (Voice over IP/Fax over IP)
Eicon Diva Server SoftIP Software


Cornelia Wegmueller, ACTIVEFAX Customer Support
INTERTRADE ENTERPRISES LTD :: Blegistr.25 :: CH-6340 Baar/Switzerland
Phone: +41 44 5866974
Fax: +41 44 2742350
mailto:support@activefax-distribution.com
http://www.activefax-distribution.com


Class 2.0 Fax Standard Error

December 1, 2007

Q:
I am trying the latest version of ActiveFax with 2 U.S Robotics 56 K fax modems. My problem is on %50 of fax deliveries I get the message “The modem on COMX” does not support Class 2.0 Fax Standard”. but the modems supports this standard. 1 use them with other fax programs without problem.

After I get this message “The Modem Server” stops and starts itself I guess, tries to send again and sometimes it delivers the fax from the same modem, sometimes it gives the same error again and again. If there was a problem with the modems it would not deliver any fax I guess. Any idea ?

A:
Transmission errors with analog modems are often caused by a bug in the modem software (firmware) or by a DSP (Digital Signal Processor) with poor signal processing. We recommend to only use quality modems for fax operation, since low-cost modems usually do not work very reliable in practice.

Problems with bugs in the modem firmware can usually be solved by running the modem in fax class 1 mode with the following settings. By running a modem in fax class 1 mode, the modem software is only doing basic operations and most parts of the fax transmission are controlled directly by ActiveFax in that case. We also recommend to use at least ActiveFax Version, when running a modem in fax class 1 mode.


Cornelia Wegmueller, ACTIVEFAX Customer Support
INTERTRADE ENTERPRISES LTD :: Blegistr.25 :: CH-6340 Baar/Switzerland
Phone: +41 44 5866974
Fax: +41 44 2742350
mailto:support@activefax-distribution.com
http://www.activefax-distribution.com