2400/9600 BPS Faxmodem  (250-3027)       Features      Faxback Doc. # 4869

This fax/modem combines three powerful communications tools, a 2400/1200/
300 bps Hayes-compatible modem, 9600/4800/2400 send/receive fax, and 
V.42bis/MNP5 data compression with V.42/MNP4 automatic error-correction. It
uses a Rockwell chip set for superior performance, and it plugs directly 
into any one of the expansion slots in the IBM PC, XT, AT, PS/2 Model 25 and 
30 or compatible PCs, eliminating the need for any external hardware. Since 
it is a "half card", it can be plugged into the "short" slots in an XT or 
AT, or used with computers that have slots shorter than the standard 13 
inches.

This fax/modem is a Hayes-compatible auto-dial/auto-answer modem that 
provides all the fallback and operation requirements for asynchronous data 
communications at 2400, 1200, and 300 bps, and supports all the current 
Hayes commands for asynchronous operation, including all S Registers, AT 
Commands, and Dial Modifiers. It also supports the V.29 and V.27ter fax 
protocols for sending and receiving fax at 9600, 7200, 4800, and 2400 bps, 
and can automatically sense and adjust to the speed of a slower fax machine. 
Settings and phone numbers can be saved to the faxmodem's non-volatile 
memory.

The fax/modem is also fully compliant with the international V.42bis and 
MNP5 standards for data compression and the V.42 LAPM and MNP2-4 
error-correction standards. Each connection to another modem is 
automatically negotiated to ensure that the highest compatible level for 
data compression and error correction is used. 

Special features include superior call progress tone detection, 4 COM ports 
and 4 interrupts for enhanced compatibility with systems using multiple 
serial devices, a quality speaker and high-power amplifier for better call 
monitoring, and a high-speed UART and a wait-state option to ensure 
reliability with even the fastest 386 and 486 computers.

Your fax/modem has the following features:

* 2400/1200/300 bps Hayes compatible modem
* 9600/7200/4800/2400 Group III Class I and Class 2 facsimile
* Compatible with Hayes AT Commands and extended AT Commands, S Registers, 
  and Dial Commands plus Extended AT Fax Command Set
* Fully compliant with CCITT V.42bis and V.42 protocols
* Supports the following data protocols:
 
  - CCITT V.22bis (2400 bps international standard)
  - Bell 212A (1200 bps U.S. standard)
  - CCITT V.22 (1200 bps standard used in most countries outside the U.S.)
  - Bell 103 (300 bps U.S. standard)
  - CCITT V.21 (300 bps U.S. standard)
  - CCITT V.23 (1200/75 bps)
  - CCITT V.27ter (4800/2400 bps fax standard)
  - CCITT V.29 (9600/7200 bps fax standard)
  - CCITT V.21 (300 bps fax standard)

* Supports 4 COM ports and 4 Interrupts (IRQ 2,3,4,5)
* Programmable Wait-State
* Adaptive Equalization
* Hardware Flow Control (CTS/RTS)
* Software Flow Control (XON,XOFF)
* Speed Buffering (accepts commands at up to 9600 bps)
* Synchronous Operation (can operate asynchronous to computer and 
  synchronous to another V.42bis modem)
* Programmable Inactivity Timer (hangs up if no data has been transferred 
  for a specified amount of time)
* Adaptive Dialing (detects whether user has touchtone service and switches 
  to pulse if necessary)
* Fast Pulse Dial Capability (10 or 20 pulses per second versus Hayes 10 
  pps)
* Redial of Last Dial String
* Enable/Disable Auto-Retrain Mode
* Enable/Disable 1300 Hz Calling Tone
* Reporting of Cause for Connection Failure
* Reporting of Telephone Line Signal Quality/Carrier Level
* Adaptive Equalization
* Automatic Speed Selection/Fallback to Slower Speed
* Full and Half Duplex Operation
* Auto-Originate and Auto-Answer Modes
* Non-volatile Memory
* Forced Originate and Answer Modes
* Auto Reverse Mode
* 40 Character Command Buffer (for chaining commands)
* Automatic Diagnostics:
  - Power-up Self Test
  - Local and Remote Analog Loopback
  - Local and Remote Digital Loopback
* Dialing Capabilities:
  - Autodial in Tone, Pulse, or Combination Tone/Pulse
  - Reverse Mode Dialing
  - Call Progress Tone Detection
  - Manual Dial Override
  - Programmable Number of Rings Before Answer/Hangup

(dtc-07/28/93)