USING YOUR SUPRAFAXMODEM ROM UPGRADE 1.2J/H

The 1.2J/H ROM upgrade provides several sophisticated enhancements to your 
SupraFAXModem.  These instructions explain how to use those enhancements.

RATE RENEGOTIATION

Several commands and S registers combine to provide improved rate 
renegotiation on your SupraFAXModem:

	%G0     Disable rate renegotiation on V.32bis.
	%G1     Enable rate renegotiation on V.32bis, and enable rate 
		renegotiation with retrain on V.32.

	%E      Has not changed, but if both %G1 and %E1 are set, then the 
		modem will renegotiate the rate during a retrain.  This is 
		also the only way the SupraFAXModem V.32 can rate renegotiate.

	&F1     Default now includes %G1.
	&F2     Default now includes %G1.

	S Register S109.

		Decimal Value   Explanation
		1       reserved
		2       4800 bps
		4       7200 bps
		8       9600 bps
		16      12000 bps
		32      14400 bps
		64      reserved
		128     reserved

The slowest possible carrier speed can be limited by S109.  Some modems 
(including SupraFAX-Modem V.32 and V.32bis modems with early ROMs) can only 
up-shift a few times, and then they will lose the connection.  The solution 
to this problem is to change S109 so that the modem does not need to 
up-shift as many times if S110=3.  

	S Register S110.

		0       Connect at V.32 only.
		1       Enable V.32bis on V.32bis modems.
		2       Enable V.32bis and automatic rate renegotiation.
		3       Connect at the slowest possible V.32 or V.32bis speed, and then 
			upshift if quality is good.

The V.32bis standard negotiates carrier speed at 4800 baud, and then jumps to 
the agreed carrier speed to negotiate error correction/data compression.  On 
noisy lines this can cause various con-nection problems.  Supra's solution is 
to set S110 to 3.  This causes the modems to connect at the slowest possible 
V.32 or V.32bis speed.  With S110=3, as long as the line is clean enough, the 
modems will up-shift to the next possible carrier rate.  The slowest possible 
carrier speed can be set  by S109.  

COMPATIBILITY WITH A WIDER RANGE OF FAX MACHINES

Rockwell chipset-based modems, including SupraFAXModems with older ROMs, 
cannot connect with a select few brands or models of fax machines.  To 
provide increased compatibility with these fax machines, Supra has modified 
the fax tone emitted by the modem, so that the modem can communicate with a 
wider range of fax machines.  This feature is in effect automatically; you do 
not need to do anything to invoke it.  However, please note that you may hear 
a slight "rattling" noise when dialing out (on fax calls only), which is the 
sound of the tone that allows this compatibility.

Silent Answer 

Silent answer lets one telephone line be used for two purposes: receiving 
faxes with the modem, and receiving voice calls with an answering machine or 
telephone.  When set to this mode, the modem lets your answering machine 
answer all incoming calls.  If it detects fax "CNG" tones, it routes the call 
to your fax software.  Otherwise, it just sits silently on the phone line 
while you or your answering machine takes the call.  

You must be able to modify your fax software initialization string to take 
advantage of this feature.  Your software probably does not allow you to 
modify the initialization string.  Supra is currently working with several 
software vendors to add Silent Answer support to their software.  To obtain a 
version of your software that supports Silent Answer, please contact the 
software company.

Once you have software that supports Silent Answer, if your software uses 
register S0 to enable Auto Answer, set S0 to a number larger than your 
answering machine.  This will allow the answering machine to answer first.  
When the phone rings, the modem will start monitoring the telephone line 
after the second ring.  If it detects a fax tone, it will do one of the 
following:  

	If S0 = 0, the modem will immediately answer the phone and attempt a 
	fax connection.

	If S0 = 0, the modem will quickly issue up to 9 "RING" messages, 
	expecting the fax software to issue an ATA.

When installing the modem, DO NOT plug the answering machine into the 
telephone jack on the back of the modem.  Instead, do ONE of the following:

	Plug the answering machine and modem into different wall jacks (i.e. 
	jacks in different rooms).  

	Plug the answering machine into a wall jack and the modem into the 
	answering machine.

Also, if you have an older answering machine that does NOT automatically turn 
itself off when it detects that a person or the modem has answered the call, 
you need a $7.95 adapter from Radio Shack, part #43-107.  This adapter 
disconnects the answering machine from the phone line when the call is 
answered.  It goes between the answering machine and the wall jack.

Adaptive Answer 

Adaptive answer allows the modem to decide if an incoming call is fax or data, 
and handle it appropriately.  To take advantage of this feature, you must 
have a software driver that knows how to switch between fax and data.  Your 
fax or data software may have this driver built in.  The driver must use the 
following commands to enable Adaptive Answer:
	
	AT +FCLASS=0
	AT +FAA=1 (if using class 2) or +FAE=1 (if using class 1)
	S0=(1-255)  (or ATA after RING message)

The following result codes can be returned in Adaptive Answer mode:  
	CONNECT XXXX if the call is a data call, or 
	FAX if the call is a fax call.


Caller ID

In addition to the features described earlier, Caller ID is available as a 
low-cost upgrade option.  If your upgrade includes this feature, you will 
want to understand the information in this section.

Caller ID is only available in some areas of the country.  You can only take 
advantage of it if your tele-communications software supports Caller ID.  In 
between the first and the second ring of an incoming call, the phone company 
will send information on who is calling you.  For example, if you are in 
terminal mode and have told the modem to answer on the third ring, you may 
see the following on your screen:

	RING

	DATE = 0321
	TIME = 1405
	NMBR = 5039672400
	NAME = SUPRA CORPORATION        {Optional.  Info may vary from one 
					 phone company to another.}

	RING

Caller ID can be used by many computer applications for improved security, 
efficiency, and convenience.  Here are a few of the potential applications:
	
	Bulletin Board Systems (BBSs).  A BBS can positively identify callers 
	without the normal tedious logon sequences, and prevent unauthorized 
	entry due to lost or stolen accounts and passwords.
	
	Screening Calls.  Your computer can display the number and possibly 
	name of who is calling, so you can decide if you want to answer or 
	not.
	
	Professional billing.  Your computer can match incoming calls to your 
	client list and automatically create a charge to the client's account 
	for your phone time.
	
	Database Lookup.  Your customer's record or account can be displayed 
	on your computer screen before you answer the call.

The following AT commands enable and disable Caller ID:
	
	#CID=0  Disables Caller ID
	#CID=1  Enables Caller ID in formatted format
	#CID=2  Enables Caller ID in unformatted format (ASCII printable hex 
		numbers)

As with any AT data commands, you can issue these commands from your 
telecommunications software terminal mode, or include them in your telecom 
software's init string.  For example, to enable Caller ID, type the following 
in your telecom software's terminal mode, where [CR] represents a carriage 
return:
	
	AT #CID=1 [CR]  

The SupraFAXModem Reference Manual provides more information on AT commands.


Solving Problems

If you need further assistance after following these instructions, please 
contact Supra Technical support.  


Supra Corporation Technical Support
(Monday-Friday, 8 a.m.-5 p.m. PST)
IBM DOS 503-967-2490    
IBM Windows     503-967-2491    
Macintosh       503-967-2492    
All Other       503-967-2440    


Also available by BBS, fax, or mail at:
BBS     503-967-2444    
FAX     503-967-2401    
MAIL    7101 Supra Drive SW
	Albany, OR  97321 USA




























c 1992 Supra Corporation

SupraFAXModem is a trademark of Supra Corporation.  Other trademarks belong to their respective owners.



70-0087-R
THIS PART ON BBS:T ON BBS:t be able to modify your fax software initialization string to take advantage of this feature.  (Not all software initialization strings can be modified.)  Your software may also issue commands you are not aware of, which could interfere with your ability to use this feature.  Software is being updated to support Silent Answer; if your software does not support Silent Answer, please contact the software company.

If you can modify your fax software initialization string, use the following fax commands to enable Silent Answer:
	
	AT +FCLASS=0
	AT +FAA=2 (if you are using class 2) or AT +FAE=2 (if you are using class 1)

At the time this is being written, Winfaxt software uses Class 2, FAXstft uses Class 1, and FaxTalk Plust either uses Class 1 or lets you choose between Class 1 and Class 2.  If you do not know which Class your software uses, please contact the software company.



