Datasheet XE3314B Datasheet (XECOM)

Low-Cost, Embeddable 33,600 BPS Modem Module

XE3314B

June 2000

Description

Xecom's XE3314B is a complete, low-cost 33,600 bps
modem in a single component. The XE3314B includes a
transferrable FCC Part 68 Registration and is a UL1950
recognized component.

The XE3314B is a complete modem and includes the
DAA. XE3314B users do not need to add RAM, ROM,
Crystals, transformers, or switches to complete the
modem design. The user only needs to provide the TTL
level, serial interface and the telephone jack.

The XE3314B is a full-featured modem. Besides 33.6
Kbps data transfer, the XE3314B supports data compres­sion, error correction and fax transfer. The XE3314B
also includes NVRAM for permanent storage of the
modem configuration.

The XE3314B is pin compatible with Xecom's XE1414B
modem. This family of modems permits a simple
upgrade path from 14400 bps to 33,600 bps.

Features

FCC Part 68 Registration transferrable to customer’s

*

system

* UL1950 Recognized Component

Small Size: 2.75 inches by 1.38" by 0.42"

*

* Modem Control and Configuration through industry

standard AT Commands.

Modem Protocols: V.34bis, V.34, V.32bis, V.32,

*

V.22bis, V.22, V.21, Bell 212A and 103

Fax Protocols: V.17, V.29, V.27ter, and V.21 channel 2

*

Error Correction; V.42, MNP2-4 and MNP10

*

Data Compression; V.42bis and MNP5 provides a

*

maximum effective data rate of 133,400 bps.

Pin compatible with Xecom's XE1414B, XE1414C,

*

XE3314C and XE5614C.

Serial I/O

/DTR

/RTS
/CTS
/DSR
TXD
RXD

/DCD

Auxiliary I/O

RESET

AR

OH

AMP

Modem

Controller

Block Diagram

ROM

NVRAM

Analog

Front

End

DAA

Tip

Ring

XECOM (1) XE3314B

XE3314B Mechanical Specifications

K

INCHES METRIC(MM)

PIN MIN MAX MIN MAX

A 2.74 2.760 69.60 70.10
B 1.370 1.390 34.80 35.31
C 0.420 0.430 10.67 10.92
D 1.190 1.210 30.23 30.73
E 1.890 1.910 48.01 48.51
F 0.125 0.200 3.18 5.08
G 0.080 0.100 2.03 2.54
H 0.415 0.435 10.54 11.05
J 0.090 0.110 2.29 2.79
K 0.020 0.025 0.51 0.64

Pins = 0.025 inch square pin
All pins tin-plated

XE3314B PIN CONFIGURATION

NC
AR

RXD

NC
NC
NC
NC

NC
/DTR
TST3

/CTS

NC

TXD

/RTS

NC

/RI

1
2
3

10
11
12
13
14
15
16

A

B

Denotes Pin 1

C

D

G

J

E

F

H

40
39

38
4
5
6
7
8
9

37

36

35

34

33

32

31

30

29

28

27

VCC
/DSR
/DCD
NC
RESET
NC
NC
NC
NC
NC
OH
NC
TST1
TST2

TIP

RING

18

20

22

21

AMP
GND

XECOM (2) XE3314B

XE3314B Pin Descriptions

PIN NAME DESCRIPTION

1 NC No Internal Connection
2 AR Auxiliary Data/Voice Relay, Active High Output, TTL/CMOS. The AR signal goes high when ever

the modem is in the on-hook state. It can be connected to an external relay to switch control of the
telephone line between the modem and an auxiliary handset when.

3 RXD Received Data, Output, TTL. Serial data output to the host. A logic "High" on RXD represents a

"mark" and a logic "Low" represents a "space".

4-8 NC No Internal Connection

9 \DTR Data Terminal Ready, Input, active Low, TTL. The "AT&D" command sets the function of \DTR.

The default, AT&D2, requires the host to assert \DTR to permit a modem link. The modem drops the

call in progress if \DTR is revoked and will not connect until \DTR is re-asserted.
10 TST3 Test 3 is used for manufacturing purposes only. It has no function in normal operation.
11 \CTS Clear to Send, Output, active Low, TTL/CMOS. \CTS is used as a Flow Control output from the

modem. The modem revokes \CTS with hardware flow control active to signal the host that the

modem's input buffer is full. The modem reasserts \CTS when the buffer can accept more data

without a buffer overflow.
12 NC No Internal Connection
13 TXD Transmit Data, Input, TTL. Serial data input from the host. A logic "High" represents a "mark" and a

Low represents a"space", TTL.
14 \RTS Request to Send, input, active Low, TTL. The XE3314B uses \RTS for hardware flow control. When

\RTS is revoked; hardware flow control is enabled, and the modem will not place data on RXD.
15 NC No Internal Connection
16 \RI Ring Indicator, Output, active Low, TTL. When low indicates the modem is receiving a ring signal.
18 TIP Tip connection to the phone line(RJ11 pin3) from the internal DAA. The XE3314B is not sensitive to

the battery voltage polarity across Tip and Ring.
20 RING Ring connection to the phone line(RJ11 pin4) from the internal DAA.
21 GND Ground (0 volts)
22 AMP Audio Output function is set by L & M commands and the value in register S22. This output can drive

a minimum load of 300 ohms.

27, 28 TST1, TST2 Test 1 and Test 2 are used for manufacturing test only. They have no function in normal use. These

pins are connected to the telephone line side of the telephone interface circuit so isolation must be

maintained between these signals and all other circuits.
30 OH Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed. Hookswitch

closure connects the modem to the telephone line. This signal is available only on the XE3314B.
36 RESET Hardware reset pin, Input, active High, TTL. A high on Pin 36 initiates a hardware reset. An external

reset is not required or recommended. The Reset pulse must be a minimum of 100 milliseconds long
37 N/C No Internal Connection
38 \DCD Data Carrier Detect, Output Active Low, TTL/CMOS. The &C command sets the function of \DCD. In

the default state \DCD activates when a valid carrier is detected.
39 \DSR Data Set Ready, Output, active Low, TTL/CMOS. &S sets the \DSR function. In the default condition,

AT&S0, \DSR is forced true.
40 Vcc +5 Volts.

XECOM (3) XE3314B

XE3314B Electrical Specifications

Parameter Min Typ Max Units Comments

VCC 4.75 5.25 Volts
ICC 170 200 220 ma On Line
Ring Voltage Detected 38 150 RMS XE3314B
Ring Frequency Detected 15.3 68 Hz
Telephone Loop Current 10 100 ma XE3314B
Data Transmit level -12 -10.5 -9.0 dBm
DTMF Transmit Level -2.5 0 dBm Avg over 3 second interval

ABSOLUTE MAXIMUM RATINGS*

SUPPLY VOLTAGE - Vcc +6.5 Volts

DC INPUT VOLTAGE -0.6 Volts to +6.5 Volts

STORAGE TEMPERATURE RANGE -25° C TO +85° C

LEAD TEMPERATURE (Soldering, 2 sec per wave) 260° C

OPERATING TEMPERATURE RANGE 0 TO 70° C

*Exceeding these values may result in permanent damage to the device.

XECOM (4) XE3314B

XE3314B Typical Applications Schematic for US, Canada and Japan

/DSR

/DCD

16C450

UART

SIN

RXD

XE3314B

XE3301

VCC

/DSR

/DCD

/DTR

/CTS

SOUT
/RTS

/RI

/DTR
/CTS

TXD

/RTS

Tip
Ring

/RI

L2

L1

4 3

Line

J1

C2

C1

AMP

GND

50K

.2 ufd

+5 Volts

LM386

.05 ufd

10 ohms

250 ufd

8 ohm .5 W
Speaker

Note: RJ11 Pin assignments reflect a 6-pin connector. Tip and Ring are always the center pins of the RJ11 jack.

Recommended Parts

Reference Designation Description Recommended Part Number

L1, L2 Ferrite Beads TDK ACB2102L-120-X
C1, C2 Capacitors Panasonic ECKDRS471, 470 pfd, 2600 Volts

J1 RJ11 Jack Stewart SS6446NF

XECOM (5) XE3314B

XE3314B AT Commands

Modes of Operation

The XE3314B uses "AT" commands for control and
configuration. The XE3314B operates in three modes;
Command Mode, Fax Mode and Data Mode. Exten­sions to the AT command set support fax operation.

Data Mode: The modem enters data mode after it es­tablishes a link and issues a "CONNECT" result code.
In Data Mode the modem modulates all signals on
Transmit Data, Pin 13, and sends them to the remote
modem. The modem demodulates the signal from the
remote modem and places it onto Received Data, Pin 3,
for the host equipment. When the modem exits data
mode, it issues a "NO CARRIER" result code.

Command Mode: The XE3314B enters command
mode on application of power, reset, loss of the con­nection, or receipt of the escape sequence. In com­mand mode the modem accepts commands from the
host on Transmit Data. Appropriate result codes are re­turned on Received Data at the same speed and parity
as the commands.

Fax Mode: The modem enters fax mode on receipt of
the AT+FCLASS=1 command. Fax commands and re­sponses are issued at 19,200 bits per second; the char­acter format is 8 bits no parity. The modem accepts
Class 1 Fax commands only in fax mode. The A/,
ATO, AT&T and escape commands are not valid in fax
mode.

Commands

The modem is configured and controlled with AT com­mands. AT commands follow a strict format. The
command line is stored in the command buffer and ex­ecuted upon receipt of a carriage return. Until ex­ecuted, the command line can be edited with the back­space key.

Command Format - Each command, except A/, begins
with the AT prefix. The "A" and "T" may be both up­per case or both lower case but cannot be of different
cases. The modem uses the prefix to identify the host's
speed and parity. The modem determines speed by
measuring the width of the incoming bits and parity by
comparing the parity bits of the "A" and "T." The mo­dem then returns result codes at the host's speed and
parity.

Command Line - A command line may include mul­tiple commands. The modem executes the commands
in the sequence they appear in the command line.
Spaces, inserted to improve legibility, do not fill space
in the command buffer. A carriage return terminates the
command line and causes the commands to be ex­ecuted. Register S3 allows the user to select a character
other than a carriage return to terminate the command
line.

Command Buffer - The command buffer holds 40
characters, including the AT prefix. If it overflows, the
modem issues an "ERROR" result code and commands
are not executed.

Command Line Editing - A backspace can be used to
edit the command any time before it is executed. The
backspace character, Control and H simultaneously on
some systems, erases the previous character in the
command line. Any character except for the "A" and
"T" can be erased. Register S5 allows the user to se­lect a character other than a backspace to edit the com­mand line.

Re-Execute Last Command - The A/ command
causes the modem to re-execute the command line
stored in the command buffer. This is the only com­mand which does not require the "AT" prefix.

Omitted Parameters - Most commands include a pa­rameter which determines the command function.
When the parameter is omitted from the command
string, it is assumed to be a 0.

Escape Characters - A three character escape se­quence, entered while in data mode, will switch the mo­dem into command mode while remaining on line. The
escape character, set by Register S2, is entered 3 times
in succession to execute the escape. The default es­cape sequence is "+++."

Result Codes - The modem issues a result code after
each action. Result codes may be provided as full
words, numeric codes or may be disabled. Each result
code ends with a carriage return when numeric result
codes are chosen. When full word result codes are cho­sen, a Line Feed and Carriage Return precede and fol­low each result code.

XECOM (6) XE3314B

XE3314B AT Commands (continued)

List of Commands

An asterisk indicates the default setting of the command for the
XE3314B. The default setting may be different for the
European models.

A - Answer Command - ATA forces the modem to immedi­ately go off-hook and begin transmitting the answer tone se­quence.

Bn - Select Communications Standard - ATBn selects the
modulation scheme used for connections below 2400 bits per
second

n=0 Selects CCITT standards
n=1 Selects Bell standards*

D - Dial Command - Below are the characters accepted in a
dialing command.
0-9, #, * = Dialing Digits

L = Re-dial last number
P = Pulse dial
T = Tone dial

S=n = Dial stored number

W = Wait for dial tone
^ = Toggles state of calling tone
, = Pause for the duration of S8
@ = Wait for silence
! = Switch hook flash
; = Return to the command state

En - Command Echo - ATEn determines whether commands
will be echoed back to the host.

n=0 Do not echo commands
n=1 Enable command echo*

Hn - Switch Hook Control - ATHn opens and closes the
modem's hook switch.

n=0 Switch hook relay opens
n=1 The switch hook relay closes

In - Modem Identification - ATIn Identifies the version of
the modem.

Ln - Speaker Volume - ATLn sets the amplitude of the
modem's audio output.

n=0 Lowest speaker volume
n=1 Low speaker volume*
n=2 Moderate speaker volume
n=3 High speaker volume

Mn - Speaker Activity - ATMn determines when the
modem's audio output is active.

n=0 Speaker off
n=1 Speaker on until carrier received*
n=2 Speaker remains on
n=3 Speaker off during dialing, on until carrier

Nn - Data Rate - ATNn selects whether or not the modem
will negotiate a lower data link speed.

n=0 Handshake only at DTE rate
n=1 Negotiate highest common speed*

On - On Line - ATOn switches the modem from the com­mand mode to the data mode.

n=0 Return On Line with no retrain*
n=1 Initiate retrain returning On Line.

Qn - Responses - ATQn determines if the modem will issue
responses.

n=0 Send responses*
n=1 No Responses

Sr? - Interrogate Register - ATSr? requests the current
value in register Sr.
Sr=n - Set Register Value - ATsr=n sets the value of register
Sr to n.

Vn - Result Codes - ATVn sets the modem to issue Numeric
or Full Word result codes .

n=0 Numeric Result Codes
n=1 English Word Result Codes*

Wn - Connect Message Rate - ATWn determines whether
the data rate reported in the Connect response is the host data
rate, the link data rate or whether both are provide along with
the error control and data compression protocols negotiated.

n=0 Send "CONNECT" at DTE Rate*
n=1 Report line speed, DTE speed and Link protocol
n=2 "CONNECT" Reports Link speed

Xn - Result Code Set - ATXn selects which set of result
codes the modem may send.

n=0 Result codes 0 to 4
n=1 Result codes 0 to 5 and 10
n=2 Result codes 0 to 6 and 10
n=3 Result codes 0 to 5, 7 and 10
n=4 Full Result codes*

XECOM (7) XE3314B

XE3314B AT Commands (continued)

Yn - Long Space Disconnect - ATYn determines if the mo-

dem will automatically disconnect if a continuous space is re­ceived for 1.6 seconds.

n=0 Long Space Disconnect Disabled*
n=1 Disconnect on long space

Zn - Reset - ATZn executes a soft reset to the modem and re­sets the modem configuration.

n=0 Reset to user profile 0*
n=1 reset to user profile 1

&Cn - DCD Operation - AT&Cn determines the operation
of the DCD output.

n=0 DCD is forced active.
n=1 DCD indicates a valid carrier*

&Dn - DTR - AT&Dn determines how the modem will re­spond to changes to DTR.

n=0 DTR is ignored by the modem.
n=1 Enter command mode if DTR revoked.
n=2 Disconnect if DTR revoked.*
n=3 Soft reset when DTR revoked

&Fn - Return to Factory Defaults - AT&Fn returns the mo­dem configuration to one of two factory configurations.

n=0 Restore configuration 0*
n=1 Restore configuration 1

&Gn - Guard Tone - AT&Gn controls the guard tone pro­duced by the modem

n=0 Guard Tone Disabled*
n=1 Guard Tone Disabled
n=2 1800 Hz Guard Tone

&Kn - Flow Control - AT&Kn selects the flow control
method used by the modem.

n=0 Disabled
n=3 RTS/CTS
n=4 XON/XOFF
n=5 Transparent XON/XOFF
n=6 RTS/CTS and XON/XOFF

&Pn - Dial Pulse Make/Break Ratio - AT&Pn determines
the specific pulse dialing parameters used by the modem.

n=0 39/61% @ 10 pps*
n=1 33/67% @ 10 pps
n=2 39/61% @ 20 pps
n=3 33/67% @ 20 pps

&Qn - Line Connection - AT&Qn determines if error control
or data buffering are active on the link.

n=0 Direct mode (no data buffering)*
n=5 Use Error Correction
n=6 Normal Mode (Speed buffering)

&Sn - DSR Operation - AT&Sn sets the operation of the
DSR signal.

n=0 DSR always active*
n=1 DSR in accordance with V.25.

&Tn - Test Modes - AT&T selects modem test modes.

n=0 Exit test mode
n=1 Local analog loopback
n=3 Initiate local digital loopback
n=4 Respond to remote loop request*
n=5 Deny remote loop request
n=6 Initiate a Remote Digital loopback
n=7 Remote digital loopback w self-test
n=8 Local analog loopback w self-test

&Vn - View Configuration Profiles - AT&V permits the
user to check on the modems current configuration.

n=0 View active profile & user profile 0*
n=1 View active profile & user profile 1

&Wn - Store Active Profile - AT&Wn stores the current mo­dem configuration in NVRAM.

n=0 Store active profile as profile 0*
n=1 Store active profile as profile 1

&Yn - Recall Stored Profile - AT&Yn sets the stored mo­dem configuration to be used after a hard reset.

n=0 Recall profile 0 on power-up*
n=1 Recall profile 1 on power-up

&Zn=x - Store telephone number "x" in

memory location "n"

%En - Line Quality Monitor/Auto Retrain - AT%En de-

termines if the modem will monitor line quality during a con­nection and initiate a retrain if quality drops below acceptable
levels.

n=0 Disabled
n=1 Enabled
n=2 Line quality, fallback, fall forward

XECOM (8) XE3314B

XE3314B AT Commands (continued)

%L - Read Received Signal Level - AT%L

user to read the magnitude of the receive signal in dBm.

%Q - Read Line Signal Quality - AT%Q permits the user
to read the EQM value of the received signal.

\An - MNP Block Size - AT|An sets the block size for MNP
data packets.

n=0 Maximum 64 characters
n=1 Maximum 128 characters
n=2 Maximum 192 characters
n=3 Maximum 256 characters*

\Bn - Transmit Break - AT\Bn selects the duration of the
break signal sent. Break = n x 100 msec.

\Gn - Modem Port Flow Control -

n=0 No Modem Port Flow Control
n=1 XON/XOFF Port Flow Control

\Kn - Break control - AT\Kn determines how the modem will

handle a break signal.

Break received from host with Reliable link.

n=0 Enter on-line command mode; do not transmit

break
n=1 Purge buffers, immediately transmit break
n=2 Same as n=0
n=3 Immediately send break
n=4 same as n=0
n=5 Send break in sequence with data*

Break received from host with Direct link .

n=0 Immediately transmit break, then enter on-line

command mode
n=1 Immediately send break
n=2 Enter command mode but do not transmit break
n=3 same as n=1
n=4 same as n=0
n=5 same as n=1*

Break received from modem w Normal link.

n=0 Purge buffers, Immediately send break to the host
n=1 same as n=0
n=2 Immediately send break to the host
n=3 Same as n=2
n=4 Send break in sequence with data.
n=5 Same as n=2*

permits

the

Host initiates break on Reliable link.

n=0 Purge buffers and immediately transmit break
n=1 Same as n=0
n=2 Immediately transmit break
n=3 Same as n=1
n=4 Transmit break in sequence w data
n=5 Same as n=4

\Nn - Error Control Selection - AT\Nn determines how the

modem will handle error control negotiations.
n=0 Normal mode, no error correction
n=1 Direct mode, no buffering, no error correction
n=2 Reliable mode, error correction required
n=3 V.42 Auto-reliable mode, accept either an error
controlled or non-error controlled link*
n=4 V.42 Reliable mode, LAPM required
n=5 MNP required

-Kn - MNP Extended Services - AT-Kn determines how the

modem handles MNP10.
n=0 No LAPM to MNP10 conversion
n=1 LAPM to MNP10 conversion*
n=2 LAPM to MNP10 conversion but no MNP Ex­tended Service during V.42 LAPM answer mode detect.

+MS - Select Modulation - AT+MS sets the modulation and

available data rates in the format shown below.
AR+MS= a, b, c, d <CR>
a = modulation type

0 - V.21(300 BPS)
1 - V.22 (1200 BPS)
2 - V.22bis (2400 BPS)
3 - V.23 (1200 BPS Half Duplex)

9 - V.32 (9600 BPS)
10 - V.32bis (14,400 BPS)
11 - V.34bis (33,600 BPS)
64 - Bell 103 (300 BPS)
69 - Bell 212 (1200 BPS)

b = Automoce Selection

0 - Automode disabled

1 - Automode enabled
c = Minimum Data Rate in BPS
d = Maximum Data Rate in BPS

XECOM (9) XE3314B

XE3314B Modem Registers

S0 Answer on nth Ring: S0 sets the modem to auto-

matically answer on the nth ring. Setting S0 to 0 dis­ables automatic answer.
Range: 0 to 255
Units Rings
Default 0

S1 Ring Count: S1 is a read-only register showing the

number of rings detected. If a ring is not detected
within 8 seconds, S1 is reset to zero.
Range: 0 to 255
Units Rings
Default 0

S2 Escape Character: S2 determines the ASCII escape

character. Values of 0-127 select valid ASCII escape
characters; values from 128 to 255 disable the escape
sequence.
Range: 0 to 255
Units ASCII Character
Default 43 (+)

S3 Carriage Return Character: S3 determines the

ASCII character to serve as a carriage return to termi­nate commands and modem responses.
Range: 0 to 127
Units ASCII Character
Default 13 (Carriage Return)

S4 Line Feed Character: S4 sets the ASCII character

to act as a line feed character in modem responses.
Range: 0 to 127
Units ASCII Character
Default 10 (Line Feed)

S5 Back Space Character: S5 defines the ASCII char-

acter used as a backspace to edit the command line.
Range: 0 to 32
Units ASCII Character
Default 8 (Back Space)

S6 Dial Tone Wait Time: S6 determines how long the

modem waits for dial tone before dialing begins. The
Dial Tone Wait Time cannot be set to less than two
seconds.
Range: 2 to 255
Units Seconds
Default 2

S7 Wait for Carrier after Dialing: S7 determines how

long the modem waits for a valid carrier signal after
dialing is completed.
Range: 1 to 255
Units Seconds
Default 50

S8 Comma Pause Time: S8 defines the duration of the

pause initiated by a comma in the dialing string. The
pause is generally used when waiting for a second dial
tone.
Range: 1 to 255
Units Seconds
Default 50

S9 Carrier Detect Response Time: S9 establishes the

length of time the remote modem's carrier must be
present to be recognized as valid.

Range: 1 to 255
Units 0.1 Seconds
Default 6

S10 Carrier Off Disconnect Delay: S10 selects how

long carrier must be lost before the modem discon­nects. Note: If S10 is smaller than the value of S9,
the modem will not automatically disconnect on loss
of carrier.

Range: 1 to 255
Units 0.1 Seconds
Default 14

S11 Tone Dialing Speed: S10 sets the duration and spac-

ing of the dialing tones. S11 does not affect the
pulse dialing rate.

Range: 50 to 255
Units 1 Millisecond
Default 95

S12 Escape Code Guard Timer: S12 sets the escape se-

quence guard timer. If characters are received before
or after the escape sequence, within the guard timer,
the modem aborts the escape attempt and remains in
data mode.

Range: 0 to 255
Units 0.02 Seconds
Default 50

XECOM (10) XE3314B

XE3314B Modem Registers (continued)

S14 General Bit-Mapped Options: S14 reflects the

state of several "AT" commands.

Bit 0,4,6 Not Used

Bit 1 0 = Echo Disabled (ATE0)

1 = Echo Active (ATE1)

Bit 2 0 = Send Result Codes (ATQ0)

1 = No Result Codes (ATQ1)

Bit 3 0 = Numeric Result Codes (ATV0)

1 = Full Word Result Codes (ATV1)

Bit 5 0 = Tone Dialing Selected (T)

1 = Pulse Dialing Selected (P)

Bit 7 0 = Answer

1 = Originate

S16 Test Status: S16 shows the modem test status.

Bit 0 0 = No Local Analog Loopback

1 = Local ALB Active
Bit 1 Not Used
Bit 2 0 = Local Digital Loopback Disabled

1 = Local DLB Enabled
Bit 3 0 = No Remote Digital Loopback

1 = Remote DLB Active
Bit 4 0 = Remote DLB not requested

1 = Remote DLB Requested
Bit 5

Bit 6

Bit 7 Not Used

S18 Test Timer: S18 sets the duration of any test. If S18

equals 0, AT&T0 terminates the test.

Range: 0 to 255
Units Seconds
Default 0

S21 General Bit-Mapped Options: S21 reflects the state

of several "AT" commands.

Bit 0-2 Not Used
Bit 3,4 0 = DTR ignored (&D0)

(&D1)

Bit 5 0 = DCD always active (&C0)

Bit 6 0 = DSR always active (&C0)

Bit 7 0 = No disconnect on Space (ATY0)

0 = Remote DLB w Self-Test Disabled

1 = Remote DLB w Self-Test Enabled

0 = Local ALB w Self-Test Disabled

1 = Local ALB w Self-Test Enabled

1 =

Enter command mode on DTR off

2 = Disconnect on DTR off (&D2)

3 = Reset on DTR off (&D3)

1 = DCD on with Carrier (&C1)

1= DSR on when modem ready (&C1)

1 = Disconnect on Space (ATY1)

S22 General Bit-Mapped Options: S22 reflects the state

of several "AT" commands.

Bit 0-1 0 = Low speaker volume (ATL0)

1 = Low speaker volume (ATL1)
2

= Moderate speaker volume (ATL2)

3 = High speaker volume (ATL3)

Bit 2-3 0 = Speaker off (ATM0)

1 = Speaker off with carrier (ATM1)
2 = Speaker always on (ATM2)
3 = Speaker on during handshake
(ATM3)

Bit 4-6 0 = Basic Result codes (ATX0)

4

= Connect speed result codes (ATX1)
5 = No Blind Dial (ATX2)
6 = Busy Detection (ATX3)
7 = Full result codes (ATX4)

Bit 7 Not Used

S23 General Bit-Mapped Options: S23 reflects the state

of several "AT" commands.

Bit 0 0 = Remote DLB Disabled (AT&T5)

1 = Remote DLB Allowed (AT&T4)

Bit 1-3 0 = Host Interface at 300 bps

1 = Host Interface at 600 bps
2 = Host Interface at 1200 bps
3 = Host Interface at 2400 bps
4 = Host Interface at 4800 bps
5 = Host Interface at 9600 bps
6 = Host Interface at 19200 bps
7 = Host I/F at 38400 bps or higher

Bit 4-5 0 = Even parity in use

1 = Not used
2 = Odd Parity in use
3 = No Parity in use

Bit 6-7 0 = No Guard Tone (AT&G0)

1 = No Guard Tone (AT&G1)
2 = 1800 Hz guard tone (AT&G2)
3 = Not Used

XECOM (11) XE3314B

XE3314B Modem Registers (continued)

S27 General Bit-Mapped Options: S27 reflects the

state of several "AT" commands.

Bit 0 1 3

0 0 0 = Normal Mode (AT&Q0)
101

011
Bit 2, 4-5, 7 Not Used
Bit 6 0 = CCITT Protocols (ATB0)

S28 Pulse Dialing Bit-Mapped Options: S28 stores the

modem's pulse dialing configuration.

Bit 0-2, 5-7 Not Used
Bit 3-4 0 = Make/Break ratio 39%/61%; 10

S29 Hook Flash Timer: S29 determines the length for

time the modem closes its off-hook relay on receipt of
the "!" dial modifier to simulate a switch hook flash.

Range: 0 to 255
Units 10 milliseconds
Default 70

S30 Disconnect on Inactivity Timer: S30 sets the

periond the modemis idle before it disconnects . A 0
disables the inactivity timer.

Range: 0 to 255
Units 10 Seconds
Default 0

S31 General Bit-Mapped Options: S31 stores the status

of various AT commands.

Bit 0 0 =

Bit 1 0 = No Automode detection (ATN0)

Bit 2-3 0 = Report host speed (ATW0)

Bit 4-7 Not Used

= Error control enabled (AT&Q5)

= Direct Mode (AT&Q6)

1 = Bell Protocols (ATB1)

pulses per second (AT&P0)
1 = Make/Break ratio 33%/67%; 10
pulses per second (AT&P1)
2 = Make/Break ratio 39%/61%; 20
pulses per second (AT&P2)
3 = Make/Break ratio 33%/67%; 20
pulses per second (AT&P3)

No single-line Connect messages

(AT\V0)

1 =

Use single-line connect messages

(AT\V1)

1 =

Automode detection active (ATN1)

1 = Report all parameters (ATW1)
2 =

Report modem speed only (ATW2)

S32 XON Character: S32 determines the ASCII charac-

ter to be sent as XON for in-band flow control.

Range: 0 to 255
Units ASCII Character
Default 11 (VT)

S33 XOFF Character: S32 determines the ASCII char-

acter to be recognized as XOFF for in-band flow con­trol.

Range: 0 to 255
Units ASCII Character
Default 19 (DC3)

S36 LAPM Failure: S36 instructs the modem what to do

if the error control negotiations fail.

Bit 0-2 0 = Modem Disconnects

1 = Establish Direct Connection
3 = Establish normal Connection
4 = Disconnect if MNP handshake fails
5 = Establish Direct Connection if
MNP handshake fails.
7 = Establish Normal Connection if
MNP handshake fails.

Bit 3-7 Not Used

S38 Forced Disconnect Timer: S38 sets the delay be-

tween receipt of the command to disconnect and the
actual opening of the switch hook. If S38 is set to
255 the modem disconnects only after its buffers are
empty.

Range: 0 to 255
Units 1 Second
Default 20

S39 Flow Control Bit-Mapped Options: S39 shows the

modem's flow control status, AT&K.

Bit 0-2 0 = Flow Control Disabled

3 =

Hardware Flow Control, RTS/CTS

4 =

In-Band Flow Control XON/XOFF

5 =

Transparent In-Band Flow Control
6 = Both Hardware and In-Band Flow
Control

Bit 3-7 Not use

XECOM (12) XE3314B

XE3314B Modem Registers (continued)

S40 MNP Bit-Mapped Options: S40 shows the status of

the modem's MNP commands, .

Bit 0-1 0 = No LAPM to MNP10 conversion

(AT-K0)
1 = Enable LAPM to MNP10
conversion (AT-K1)
2 = Enable LAPM to MNP10
conversion except for LAPM

answer mode (AT-K1)
Bit 2 Not Used
Bit 3-5 0 = AT\K0 break handling selected

1 = AT\K1 break handling selected

2 = AT\K2 break handling selected

3 = AT\K3 break handling selected

4 = AT\K4 break handling selected

5 = AT\K5 break handling selected
Bit 6-7 0 = MNP Block size 64 characters

1 = MNP Block size 128 characters

2 = MNP Block size 192 characters

3 = MNP Block size 256 characters

S41 General Bit-Mapped Options: S41 stores the con-

dition of various "AT" commands.

Bit 0-1 0 = No Data Compression (AT%C0)

1 = MNP5 Data Compression

(AT&C1)

2 = V.42bis Data Compression

(AT&C2)

3 = Either MNP5 or V.42bis Data

Compression (AT&C3)
Bit 2, 6

0 0 = No Fallback/Forward (AT%E0)

1 0 = Retrain Enabled (AT%E1)

0 0 = Fallback/Forward Enabled

(AT%E2)

Bit 3-5, 7 Not Used

S46 Data Compression Control: S46 selects whether or

not the modem will support data compression with er­ror control.

S46=136 No data compression
S46=138 Data Compression selected
Default 138

S48 V.42 Negotiations: S48 determines the modem's V.42

negotiation process.

S48=0 Proceed with LAPM
S48=7 Negotiate per V.42
S48=128 Assume LAPM failure
Default 7

S86 Call Failure Code: S86 shows why the last "NO

CARRIER response was issued.

S86=0 Normal Disconnect
S86=4 Loss of Carrier
S86=5 V.42 Negotiation Failure
S86=9 Modem Handshake Failure
S86=12 Disconnect Initiated by remote

modem
S86=13 No response after 10 retries
S86=14 Protocol Violation

S95 Extended Result Codes: S95 permits the user to cus-

tomize the extended result

Bit 0 Connect result code shows link

speed
Bit 1 Add /ARQ to connect response
Bit 2 Add /VFC to Carr ier response
Bit 3 Enable Protocol response
Bit 4 Not Used
Bit 5 Enable Compression Result Code
Bit 6 Not used
Bit 7 Not Used

codes.

XECOM (13) XE3314B

XE3314B Class 1 Fax Commands

AT+FCLASS? - Service Class Indication

0 = Configured as a data modem
1 = Configured for Service Class 1.

AT+FCLASS=? - Service Class Capability

0 = Configured as a data modem
1 = Configured for Service Class 1.

AT+FCLASS=n - Set Service Class

0 = Configured as a data modem
1 = Configured for Service Class 1.

AT+FAE=n - Data/Fax Auto Answer

0 = Answer as a fax modem only
1 = Either a fax or data modem

AT+FF - Enhanced Flow Control
AT+FRH<mod> - Receive HDLC Data

3 V.21 Channel 2, 300 bps
24 V.27ter, 2400 bps
48 V.27ter, 4800 bps
72 V.29, 7200 bps
96 V.29, 9600 bps
97 V.17, 9600 bps
98 V.17 short train, 9600 bps

121 V.17, 12,000 bps
122 V.17 short train, 12,000 bps
145 V.17, 14,400 bps
146 V.17 short train, 14,400 bps

AT+FRM<mod> - Receive Fax

(see AT+FRH for "mod" values)

AT+FRS<time> - Receive Silence
AT+FRTn - Receive Test Data
AT+FTH<mod> - Transmit HDLC Data

(see AT+FRH for "mod" values)

AT+FTM<mod> - Transmit Fax

(see AT+FRH for "mod" values)

A T+FTS<time> - Transmit Silence
AT+FTTn - Transmit Test Data

XECOM (14) XE3314B

XE3314B Result Codes

Digits Verbose Description

0 OK Successfully executed

command line

1 CONNECT 300 bps connection
2 RING Ring signal detected
3 NO CARRIER Carrier not detected/lost
4 ERROR Error in command line
5 CONNECT 1200 1200 bps connection
6 NO DIAL TONE No dial tone detected
7 BUSY Busy signal detected
8 NO ANSWER 5 second silence not

detected

10 CONNECT 2400 2400 bps Connection

11 CONNECT 4800 4800 bps Connection

12 CONNECT 9600 9600 bps Connection

13 CONNECT 7200 7200 bps Connection

14 CONNECT 12000 12,000 bps Connection

15 CONNECT 14400 14,400 bps Connection

16 CONNECT 19200 19,200 bps Connection

17 CONNECT 38400 38,400 bps Connection

18 CONNECT 57600 57,600 bps Connection

19 CONNECT 115200 115200 bps Connection

22 CONNECT 75TX/1200RX

V.23 originate connection

23 CONNECT 1200TX/75RX

V.23 answer connection

33 FAX Fax connection

35 DATA Data connection in Fax

mode

40 CARRIER 300 300 bps carrier received

44 CARRIER 1200/75 V.23 reverse channel

carrier received

45 CARRIER 75/1200 V.23 forward channel

carrier received

46 CARRIER 1200

1200 bps carrier received

Digits Verbose Description

47 CARRIER 2400
48 CARRIER 4800
49 CARRIER 7200
50 CARRIER 9600
51 CARRIER 12000
52 CARRIER 14400
53 CARRIER 16800
54 CARRIER 19200
55 CARRIER 21600
56 CARRIER 24000
57 CARRIER 26400
58 CARRIER 28800
59 CONNECT 16800 16,800 bps Connection
61 CONNECT 21600 21,600 bps Connection
62 CONNECT 24000 24,000 bps Connection
63 CONNECT 26400 26,400 bps Connection
64 CONNECT 28800 28,800 bps Connection
66 COMPRESSION: CLASS 5

67 COMPRESSION: V.42bis

69 COMPRESSION: NONE

76 PROTOCOL: NONE No error correction
77 PROTOCOL: LAPM LAPM error correction
80 PROTOCOL: ALT MNP error correction
81

+F4 +FCERROR Fax carrier error

PROTOCOL: ALT CELLULAR

2400 bps carrier received
4800 bps carrier received

7200 bps carrier received
9600 bps carrier received
12,000 bps carrier received
14,400 bps carrier received
16,800 bps carrier received
19,200 bps carrier received
21,600 bps carrier received
24,000 bps carrier received
26,400 bps carrier received
28,800 bps carrier received

MNP5 data compression

V

.42bis data compression

No data compression

MNP10 error correction

XECOM (15) XE3314B

FCC Information

All equipment connected to the public telephone network in the
United States must have FCC Part 68 Registration. Part 68
registration certifies that the device will not cause harm to the
telephone network. The XE3314B provides a user transferable
FCC Registration. This permits XE3314B customers to use
our FCC registration number without submitting their systems
for additional testing. Call Xecom technical support at 408­945-6640 with any questions on whether your system qualifies
to use Xecom's FCC Registration Number.

In your operating instructions you must provide certain infor­mation to the end user of the modem. The instructions should
include most of the instructions shown below. Only the
information regarding the mounting of the device in the final
assembly should be omitted.

FCC Instructions:

his product complies with Part 68 of the FCC Rules and

T
Regulations. On each device shipped, there is a label which
contains, among other information, the FCC Registration
Number and Ringer Equivalence Number (REN) for this
product. You must, upon request, provide this information to
your telephone company.

The mounting of this device in the final assembly must be made
in such a manner as to preserve the high voltage protection
between the TIP/RING Connection and the rest of the system.
T ypically , this may be accomplished by maintaining a minimum
spacing .100 mils between the TIP/RING Traces to the RJ-11C
Jack and low voltage portion of the system. No additional
circuitry may be attached between TIP/RING and the telephone
line connection, unless specifically allowed in the rules.

Your telephone company may make changes in its facilities,
equipment, operations or procedures that could affect proper
functioning of your equipment. If they do, you will be notified
in advance to give you an opportunity to maintain uninter­rupted telephone service.

If you experience trouble with this device, please contact
XECOM at [phone] for assistance. The telephone
company may ask you to disconnect this device from the
network until the problem has been corrected or until you are
sure that the device is not malfunctioning.

The device may not be used on coin service lines provided by
the telephone company (this does not apply to private coin
telephone applications which use standard telephone lines).
Connection to party lines is subject to state tariffs.

FCC Labels:

FCC rules also require a label which is visible from the outside
of the equipment. The label should display Xecom's name as
holder of the FCC Registration, the FCC Registration Number
and Ringer Equivalence of the modem. This is the same
information which appears on the top of each XE3314B
module.

The REN is useful to determine the quantity of devices you
may connect to a telephone line and still have all of these
devices ring when the number is called. In most, but not all
areas, the sum of the RENs of all devices connected to one line
should not exceed five (5.0). To be certain of the number of
devices you may connect to the line, as determined by the REN,
you should contact the local telephone company to determine
the maximum REN for your calling area.
If your system causes harm to the telephone network, the
telephone company may discontinue service temporarily. If
possible, they will notify you in advance. If advance notifica­tion is not practical, you will be notified as soon as possible.

XECOM (16) XE3314B

Terms of Sale

Devices sold by XECOM are covered by the warranty provisions appearing in its Terms of Sale only. XECOM makes no war­ranty, express, statutory, implied, or by description regarding the information set forth herein, or regarding the freedom of t he
described devices from patent infringement. XECOM makes no warranty of merchantability or fitness for any purposes.
XECOM reserves the right to discontinue production and change specifications and prices at any time and without notice.
This product is intended for use in normal commercial applications. Applications requiring extended temperature range, un­usual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining
equipment, are specifically not recommended without additional processing and authorization by XECOM for such application.

Xecom assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xecom product. No other cir­cuits, patents, or licenses are implied.

Life Support Policy

Xecom's products are not authorized for use as Critical Components in Life Support Devices or Systems.

Life Support Devices or Systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) sup­port or sustain life, and whose failure to perform, when properly used in accordance with instructions provided in the labeling,
can be reasonably expected to result in significant injury to the user.

A Critical Component is any component of a life support device or system whose failure to perform can be reasonably ex­pected to cause failure of the life support device or system, or to affect its safety or effectiveness.

Copyright, Xecom © 2000
While Xecom, Inc. has made every effort to ensure that the information presented here is accurate, Xecom will not be liable for
any damages arising from errors or omission of fact. Xecom reserves the right to modify specifications and/or prices without
notice. Product mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks
of their respective companies.

Xecom Inco rpor ated

374 Turquoise Street, Milpitas, CA 95035

Ph:408-945 -6640 Fax:[phone]

XECOM XE3314B