The U-1496 Series Universal Modem


There are four models in the U-1496 Series. They are:

U-1496	    External standalone model with 20X2 LCD<N>display and menu
		    control. Includes leased line support.

U-1496E	    External standalone model with LED status  display.  2-wire
		    application only.

U-1496B	    PC internal card version.

U-1496R	    Rackmount version modem card.


Compatibility


The ZyXEL U-1496 modem is a high performance universal modem capable 
of transmission speed of up to 14.4 Kbps on a 2-wire full duplex mode. 
Universal compatibility covers a broad range of CCITT and BELL standards, 
and provides data compression and error free transmission.

Various operation modes that can be achieved are listed in the following 
table:

 		Bit rate   	Baud rate  	Modulation	Carrier 
		(+/-0.01%)	(+/-0.01%)			Freq   
		bps    		baud     			Hz    

V.33		14,400  	2400     	128-TCM 	1800  
V.33		12,000  	2400     	64-TCM 		1800  
V.32bis		14,400  	2400     	128-TCM 	1800  
V.32bis		12,000  	2400     	64-TCM 		1800  
V.32bis		9,600  		2400     	32-TCM 		1800  
V.32bis		7,200  		2400     	16-TCM 		1800  
V.32		9,600  		2400     	32-TCM 		1800  
V.32 uncoded	9,600  		2400     	16-QAM 		1800  
V.32		4,800  		2400     	4-DPSK		1800  
V.29		9,600  		2400     	16-QAM 		1700  
V.29		7,200  		2400     	8-QAM 		1700  
V.29		4,800  		2400     	4-DPSK		1700  
V.27ter		4,800  		1600     	8-PSK 		1800  
V.27ter		2,400  		1200     	4-DPSK		1800  
V.22bis		2,400  		600     	16-QAM 		1200  Orig. 
								2400  Ans.
V.22		1,200  		600     	4-DPSK		1200  Orig. 
(BELL 212A)							2400  Ans.
G3 Fax 	implemented according to T.30, V.17, V.29 and V.27ter.

1800 Hz guard tone for V.22bis/V.22 answer mode, 6 dB below data signal level.

G3 Fax V.17 mode may not be available on current units.

Note:
	U-1496R has the same capability as U-1496 but U-1496E 
	and  U-1496B  only have the capabilities of V.32bis, V.32, 
	V.22bis, V.22, and BELL 212A.

All models have the G3 Fax send and receive capability.


The U-1496 Standard Features

	Synchronous/Asynchronous operations for external stand-
	alone model and rackmount model.

	Asynchronous operations for PC internal card model.

	MNP class 4/5 error correction/data compression.

	V.42/V.42bis error correction/data compression.

	Extended AT command set.

	V.25bis command set.* (Not on U-1496B)(May not be available
	on the current unit).

	Operate on 2-wire dial-up line or 2/4-wire leased line.
	(4-wire leased line on U-1496 and U-1496R only)

	Auto-dial/answer and Manual originate/answer.

	Tone/Pulse dialing.

	Dial tone, busy, and ringback detection.

	Programmable speaker volume control.

	Non-volatile memory storage.

	Diagnostics available for:
		Modem full self test
		Analog loopback (w/ self test)
		Remote digital loopback (w/ self test)
		Digital loopback

	XON/XOFF or RTS/CTS flow control.

	Line status monitoring available for: (U-1496, U-1496R)
		Signal-to-noise ratio
		Receive signal level
		Frequency offset
		Phase jitter
		Retrain granted
		Retrain requested
		Round trip echo delay
		Carrier loss counter

	20 X 2  LCD display and directional keypads.(U-1496)

	G3 Fax capability.
MODEM FEATURE CHART
					ZyXEL	ZyXEL	ZyXEL
					U-1496	U-1496B	U-1496E

Physical				EXT	INT	EXT

External Model				V		V
Internal Model					V
Number of LED lights			6	N/A	12
Full LCD Menu Tree			V	

Speed and Compatibility				

V.32bis 14.4, 12.0, 7.2 kbps		V	V	V
V.32 9.6, 4.8 kbps			V	V	V
V.22bis 2400 bps			V	V	V
V.22/BELL 212A 1200 bps			V	V	V
V.21/BELL 103 300 bps			V	V	V
V.33 14.4, 12.0 kbps			V
V.29 9.6, 7.2, 4.8 kbps			V	
V.27ter 4.8, 2.4 kbps			V
HST 14.4, 12.0, 9.6, 4.8 kbps			
G3 FAX, 9.6 kpbs			V	V	V
G3 FAX, V.17 14,400 kbps		*	*	*
EIA Class 2 FAX Standard		V	V	V
Asynchronous Transmission		V	V	V
Synchronous Transmission		V		V
Dynamic Online Full back/forward	V	V	V
Auto Speed Detect			V	V	V

Error Correction/Data Compression			
MNP 3-4					V	V	V
MNP 5					V	V	V
V42					V	V	V
V.42bis					V	V	V
Throughput / DTE rate			V	V	V
Max. Throughput Possible(K)		76.8	57.6	57.6
DTE speed (K), up to			76.8	57.6	57.6

					ZyXEL	ZyXEL	ZyXEL
					U-1496	U-1496B	U-1496E

Operation Mode				

2-Wire Dial Up				V	V	V
2-Wire Leased				V	V	V
4-Wire Leased				V
Dial Backup				V

Diagnostic Modes				

Remote Digital Loopback			V	V	V
Analog Loopback				V	V	V
Digital Loopback			V	V	V
On line, line condition monitoring	V
Read/Write Remote Configuration		V	V	V
Reset Remote Configuration		V	V	V

Security				
Password Protection			V	V	V
Automatic Call Back			V	V	V

Also Included				
Telephone Cord				V	V	V
RJ-45 Cord				V
AC Power Adaptor			V		V
Communication Software			
FAX Software				V	V	V
Warranty, Parts and Labor (years)	5	5	5
Money Back (days)			30	30	30

		
V=	Standard feature	
*=	Can be upgraded 	

Pricing				

List					$945	675	695
Special Introductory			$650	449	469


U-1496 Front Panel 

There are 6 LED indicators, a 20 X 2 LCD display, and four key switches.

U-1496 Front Panel Indicators

LED Indicators

	PWR	Power ON indicator, lights up when U-1496 is turned ON.

	OH	Off-Hook indicator, lights up when U-1496 is in data mode
		or off-hook, and goes out when U-1496 is in  talk  mode or
		on-hook.

	AA	Auto-Answer indicator, lights up when U-1496 is in the Auto-
		Answer Mode; flashes when modem rings.

	DTR	Data Terminal Ready indicator, lights up when your DTE or
		Computer indicates that it is ready to begin communication.

	TXD	Transmit indicator, flashes when your DTE/Computer trans-
		mits data on the serial port.

	RXD	Receive indicator, flashes when your DTE/Computer recei-
		ves data on the serial port.


U-1496 Front Panel Switches

The four arrow keys are for the panel operation manipulation. They 
are for intuitive menu tree operation and status display. 

U-1496 Rear Panel Markings

The following explains the connectors and switch on the rear panel.

	POWER	Power switch, turns the U-1496 ON or OFF.

	POWER	Input terminal for power adapter.
	JACK
		NOTE:
		Use only ZyXEL power adapter supplied  with  the unit.
		Connecting any other adapter will result in inoperability
		of the U-1496,  and could cause serious damage to  the
		U-1496.

	LEASED	Leased-line JM8 terminal jack, for connection to a 2/4
	LINE	wire leased line.

	DIAL-UP	Dial-up line  RJ11  terminal jack, for connection to a 2<197>
	LINE	wire dial-up line.

	PHONE	Telephone line RJ11 terminal jack,  for  connection to a 
		telephone set.

	EIA-232D		
		Serial  port  DB25S  connector,  for connection to the 
		serial port of DTE.  Pin assignments are presented in 
		appendix A for your reference.


U-1496E Front Panel

There are 12 LED indicators and two switches.

U-1496E Front Panel Indicators

LED indicators

HS	High Speed indicator, lights up when modem is in V.32 or 
	V.32bis mode.

AA	Auto-Answer indicator, lights up when modem is in the Auto-
	Answer mode; flashes when modem rings.

CD	Carrier Detect indicator, lights up when a valid carrier is pre-
	sent on the line.

OH	Off-Hook indicator, lights up when modem is in data mode
	or off-hook, and goes out when modem is in voice mode or
	on-hook.

DTR	Data Terminal Ready indicator, lights up when the DTE or
	Computer indicates that it is ready for communication.

DSR	Data Set Ready indicator, lights up when modem is ready
	for communication.

CTS	Clear To Send indicator, lights up when modem can accept
	data for transmission.

TXD	Transmit Data indicator, flashes when DTE/Computer is tran-
	smitting data on the serial port.

RXD	Receive Data indicator, flashes when the DTE/Computer is
	receiving data on the serial port.

EC	Error Control indicator, lights up when modem is operated
	in an error control mode like MNP-4 or V.42.

SQ	Signal  Quality  indicator,  lights  up  when signal  quality  is
	good; flashes when it is on margin.

TST	Test indicator, lights up when modem is in a test mode.


U-1496E Front Panel Switches

VOICE/DATA	A toggle switch that toggles the modem on-line
		(off-hook,  DATA mode)   or   off-line   (on-hook, 
		VOICE mode, the telephone  set  is  connected
		to the line).

ANS/ORG		A locked switch,  it determines the modem is in
		originate    mode   or  answer   mode  when   the
		modem goes  off-hook  by  toggling  the VOICE/
		DATA switch. Locked up position  means answer
		mode and locked down position means originate
		mode.


U-1496E Rear Panel Markings

U-1496E rear panel markings are the same as those of U-1496 in Fig.2-2 
except that U-1496E does not have the leased line jack. Refer to U-1496 
rear panel explaination and modem connection for U-1496E's rear panel.

