Preliminary
XE2400G
November 2007
World’s Smallest Global V.22 Modem
Description
Features
The Xecom XE2400G is a complete, global modem in a
Small Size: HyPLCC™ measures less than 1 inch by 1
PLCC-68 compatible package. Xecom designed the
inch and is just 0.29 inches thick
XE2400G to supply embedded applications with an easy
Data transfer at rates from 300 bps to 2400 bps
to integrate dial-up communications solution.
Modem Control and Configuration via industry
Xecom includes transferable FCC Part 68 Registration to
standard AT Commands.
XE2400G users. This allows the embedded system
3.3 and 5 volt compatible Serial Interface
designer to add modem communications to his process
control, remote monitoring, point-of-sale, or remote
Supports V.42 and MNP error correction
diagnostic system without adding FCC testing.
Shared Line Features prevent modem operation from
interfering with voice communications.
Only Xecom offers a family of surface-mount, modular
modems. The XE2400G package is the smallest
Nonvolatile memory stores modem configuration.
complete modem. Xecom also offers a pin compatible
Complete integrated DAA.
module supporting both V.92 data and V.17 fax transfer
User Transferrable FCC Part 68 Registration
the XE5617G.This provides the flexibility to switch
Modem Modules to meet changing market requirements.
Complies with telephone networks around the world.
UL60950compliant
Models
3.3 Volt Power operation;
XE2400G BLOCK DIAGRAM
XECOM
(1)
XE2400G
XE2400G Mechanical Specifications
b
c
a
d
i
i
g
f
(TOP)
e
e
c
.050”
45 O
i
Inches
Millimeters
Dimension
Min
Typ
Max
Min
Typ
Max
a
0.280
0.285
0.290
7.11
7.24
7.37
b
0.985
0.990
0.995
25.02
25.15
25.27
c
0.950
0.955
0.960
24.13
24.26
24.38
d
0.910
0.920
0.930
23.11
23.37
23.62
e
0.045
0.050
0.055
1.15
1.27
1.40
f
0.695
0.700
0.705
17.65
17.78
17.91
g
0.195
0.200
0.205
10.03
10.16
10.29
i(radius)
0.015
0.020
0.025
0.13
0.25
0.38
XECOM
(2)
XE2400G
XE2400G Pin Configuration
Pin Descriptions
PIN NAME
DESCRIPTION
1
/DCD
/DCD is an active low output from the modem. This activity on /DCD is controlled by theAT&C
command. In the default state. AT&C1, /DCD indicates the presence of a valid carrier signal.
2
/CTS
/CTS is an active low output from the modem. When hardware flow control is active, the modem
asserts /CTS to indicate that it can accept data from the terminal equipment on /TXD.
3
/RESET
/RESET is an active low input which initiates a modem hardware reset. /RESET must be active for
a minimum of 100 milliseconds for a proper modem reset sequence. No external reset is required;
if none is used the /RESET signal should be left open.
4
/DSR
/DSR is active low output from the modem. The /DSR signal typically indicates that the modem
has established a communications link. TheAT&S command determines the activity on /DSR..
5
/RTS
/RTS is an active low input to the modem. When hardware flow control is active, /RTS indicates
to the modem that the host has data to send.
6
/DTR
/DTR is an active low input to the modem and is controlled by theAT&D command. The default
setting, AT&D2, causes the modem to interpret the activation of /DTR as an indication that the
host equipment is ready to communicate. If /DTR is deactivated while the modem is on-line, the
modem will immediately disconnect and enter command mode.
7
/RXD
/RXD provides the path for received data and modem responses to be sent from the modem to
the host terminal equipment.
XECOM
(3)
XE2400G
XE2400G Pin Descriptions (continued)
PIN
NAME
DESCRIPTION
8
/TXD
/TXD provides the path for transmitted data and modem commands to be passed from the host
terminal equipment to the modem.
9
/RI
The /RI signal reports on the presence of an incoming ring signal. When a ring occurs across
Tip and Ring, the /RI output goes low and toggles with the cadence of the ring signal.
10
Ground
Ground provides the reference voltage for all host interface signals.
11
SPKR
SPKR allows connection of a speaker to monitor modem operations. SPKR cannot directly drive
a speaker. An amplifier with a minimum input impedance of 300 ohms is required. The signal on
SPKR is controlled by theATM command.
12,13
N/C
No internal connection
14
VCC
VCC provides 3.3 volt power to the modem.
15
N/C
No internal connection
16-19
NP
No Pin
20-21
N/C
No internal connection
22
Tip
The Ring and Tip signals provide modem the connection to the telephone line. FCC Part 68
Rules require a 1500 volt isolation barrier between the telephone line and all other circuits. This
isolation must be preserved throughout the system.
The telephone company places a DC “Battery” voltage across Tip and Ring on all public switched
telephone lines. The XE2400G will operate regardless of the polarity of this “Battery” voltage.
The “Battery” voltage drives up to 100 milliamps of DC loop current.
UL60950 requires minimum creepage and clearances distances be maintained between the Tip
and Ring traces and all other circuits. Clearance is the shortest distance between conductive
circuits; creepage is the distance between conductive surfaces along the surface
23
N/C
No internal connection, To prevent damage in case of voltage surges on the telephone line, we
recommend that nothing be connected to this pin.
24
Ring
The Ring and Tip signals provide modem the connection to the telephone line. FCC Part 68
Rules require a 1500 volt isolation barrier between the telephone line and all other circuits. This
isolation must be preserved throughout the system.
UL60950 requires minimum creepage and clearances distances be maintained between the Tip
and Ring traces and all other circuits. Clearance is the shortest distance between conductive
NOTE: Although the XE2400G is a 3.3 volt device all serial inputs are 5 volt tolerant.
XECOM
(4)
XE2400G
XE2400G Soldering Instructions
The XE2400G is subject to damage if overexposed to heat during solder reflow operations. Following the soldering
instructions below will ensure that the process of soldering the module to the board does not damage the modem.
The XE2400G must not be exposed to direct Infrared (IR) heating. If your process includes direct IR heating, you
must shield the XE2400G from the infrared rays.
MaximumTemperature
220 O C
MaximumTimeat220 O C
20 Seconds
Maximum Time above Eutectic (180 O C)
90 Seconds
MaximumPreheatDwellTime
180 Seconds
Maximum Recommended Solder Temperature Profile
220 O C
180 O C
150 O C
-20 sec-
------------------------------180secmax-------------------------
max
----- 90 sec max -----
XECOM
(5)
XE2400G
XE2400G Electrical Specifications
Parameter
Min
Typ
Max
Units
Comments
VCC
3.0
3.3
3.6
Volts
ICC
80
85
ma
On Line
Ring Voltage Detected
26
150
VRMS
Type B Ringer
Ring Frequency Detected
15
68
Hz
Type B Ringer
Telephone Loop Current
16
40
120
ma
Line Impedance
600
Ohms
Data Transmit level
-12.0
-9.0
dBm
DTMF Transmit Level
-2.5
0
dBm
Avg over 3 second interval
Voh
2.4
5.0
Volts
Vol
0.4
Volts
Vih
2.0
5.0
Volts
Vil
-0.3
0.8
Volts
XE2400G ABSOLUTE MAXIMUM RATINGS
VCC
4.1Volts
Storage Temperature
-25 O C to +85 O C
1 Maximum OperatingTemperature Range
0 O C to +70 O C
MaximumTimeAbove Eutectic (183 O C)
90 seconds
Preheat Dwell Time
120 to 180 seconds
1 The XE2400G can be ordered with an Operating Temperature of -40 O C to +85 O C at extra cost. Order
XE2400G-ITR or to specify Industrial Temperature Range (ITR).
XECOM
(6)
XE2400G
XE2400G Typical Connection Diagram
Parts List for XE2400G Typical Connection Diagram
Reference
Designation
Qty
Description
C1,C2
2
Cap.680pfd,Y2
F1
1
PTC,TRF600-150
Notes:
1
Capacitors, C1 and C2, may be required for EMI filtering in your system. Without these components you may
experience unintended radiation when the telephone cable is attached. C1 and C2 are high-voltage capacitors.
We recommend the Novocap ES2211N681K502NXTM.. This 680 pfd, 5000 volt capacitor will direct the high
frequency harmonics to the system ground.
3. F1 is a positive thermal coefficient (PTC) device which protects the modem from excessive current flow. These
devices are required for your system to pass UL60950. Fuses may be used in place of the PTC’s
XECOM
(7)
XE2400G
Application Note: Using a 68-Pin PLCC Socket
The XE2400G can be inserted into a socket for a 68-pin PLCC device. The HyPLCC package uses only 20 pins; 15
on one side and 5 on the opposite side. Alignment within the socket is critical for all pins of the XE2400G to make
contact with the appropriate pins of the PLCC socket. The drawing below illustrates how the XE2400G fits into the
68-pin PLCC socket. Emulation Technology’s S-SMT-17-068-A socket is representative of sockets that can be used
withtheXE2400G.
60
44
61
XE2400G
43
1
2
3
4
24
5
23
6
22
7
21
1
8
20
9
19
10
18
11
17
12
16
13
14
15
9
27
10
26
XECOM
(8)
XE2400G
XE2400G Connection Data
The XE2400G reports data on the current connection in response to the ATI11 command. Because many
of the reported parameters require an active connection, this command is best utilized from the on-line
command mode accessed with the escape sequence. The items shown in italics are only valid during an
active call.
The Connection Report is presented in two pages. The first page will be displayed on receipt of the ATI11
command. To move to the second page of the report hit any key. The table below describes the
information provided in the Connection Report.
REPORTED ITEM
DESCRIPTION
1 Last Connection
Not Used
2 Initial Transmit Carrier Rate
Upstream data rate first negotiated on last connection
3 Initial Receive Carrier Rate
Downstream data rate first negotiated on last connection
4 Final Transmit Carrier Rate
Upstream data rate at the end of the last connection
5 Final Receive Carrier Rate
Downstream data rate at the end of the last connection
6 Protocol Negotiation Result
Reports the error correction protocol negotiated on last connection; values
include LAPM/SREC, LAPM, MNP, and none.
7 Data Compression Result
Reports Link data compression protocol negotiated on last connection; values
include LAPM, MNP, V.42bis, V.44 and none.
8 Noise Level
Reports the estimated noise level in the modem signal.
9 Receive Signal Power Level
Reports the approximate level of the incoming modem signal.
10 Transmit Signal Power Level Reports the level of the outgoing modem signal.
11 Round Trip Delay
Reports how many milliseconds for the signal to be transmitted and returned.
12 Near Echo level
Not Used
13 Far Echo Level
Not Used
14 Transmit Frame Count
Reports the total number of LAPM frames transmitted thus far during the call.
15 Transmit Frame Error Count Reports the number of transmitted frames rejected during the current call.
16 Receive Frame Count
Reports the total number of LAPM frames received thus far during the call.
17 Transmit Frame Error Count Reports the number of received frames rejected during the current call.
18 Retrain by Local Modem
Reports the number of retrain and rate renegotiations requested by the local modem.
19 Retrain by Remote Modem
Reports the number of retrain and rate renegotiations requested by the remote modem.
20 Local Rate Renegotiation
Reports the number of rate renegotiations requested by the local modem.
21 Remote Rate Renegotiation
Reports the number of rate renegotiations requested by the remote modem.
22 Call Termination Cause
Reports the reason for termination of the last call; 0 indicates disconnect by local
modem command, 1 indicates loss of received modem carrier, 2 indicates a failed
call attempt, and 4 indicates a protocol failure.
23 Not Used
24 Not Used
25 Not Used
26 Not Used
XECOM
(9)
XE2400G
XE2400G AT Commands
The XE2400 uses "AT" commands for configuration
If the command buffer overflows, the modem
and control. This section describes theAT command
issues an "ERROR" result code, and the
format and lists the commands, registers and result
command line is not executed. Register S3 allows
codes.
the user to select a character other than a carriage
return to terminate the command line.
Command Mode: The XE2400G enters command
mode on power-up, reset, a lost connection, or
Re-Execute
Last
Command
-
The
A/
receipt of the escape code. In command mode the
command causes the modem to re-execute the
modem accepts commands from the host on
last command line. This is the only command
transmit data. Appropriate result codes are returned
which does not require the "AT" prefix.
on received data.
Note: For backward compatibility some functions
Omitted Parameters - Most commands include
are controlled by more than one command. In these
a parameter which determines how the functions
instances the last command issued determines the
will be set. When the command parameter is
function setting.
omitted from the command string, it is assumed to
be a 0.
Command Line Format
AT commands follow a strict format.
Each
Escape Characters - A 3 character escape
command line, except A/, begins with the prefix
sequence may be entered to switch the modem
AT. The "A" and "T" may be both upper case or
into command mode while on line. The escape
both lower case but cannot be of different cases.
character, set by Register S2, must be entered 3
The modem determines data rate of the host
times in succession to execute the escape. An AT
equipment by measuring the width of the incoming
command must then be entered within the period
bits of the “A” and “T.”
defined by S12 to enter command mode. The
default escape sequence is "+++."
Multiple commands may be combined into a single
command line of up to 40 characters. Commands
Result Codes - The modem issues a result code
are executed in the sequence they appear upon
after each action. Result codes may be sent as
receipt of a carriage return. Spaces inserted into the
full words, one or two digit numeric codes, or may
command line are not placed in the buffer.
be disabled all together. Each result code ends
with a carriage return when numeric result codes
The command line can be edited with a backspace
are chosen. When full word result codes are
before it is executed. The backspace erases the
chosen, a Line Feed and Carriage Return precede
previous character in the command line. Register S5
and follow each result code.
allows the user to select a character other than
backspace to edit the command line.
XECOM
(10)
XE2400G
XE2400G AT Commands
An asterisk indicates the factory default
Mn - Speaker Activity - Determines when the speaker
will be active.
A - Answer Command - Causes the modem to
n=0 Speaker off
immediately go off-hook and attempt to a connection
n=1 Speaker on until carrier received *
n=2 Speaker remains on
D - Dial Command - Causes the modem to go off-hook
n=3 Speaker on until DCD active
and dial. Below are the characters accepted in the
dialing string.
Nn - Link Negotiations - Selects how Register S37 will
0-9,A-D, #, * = Dialing Digits
be used to set the link negotiations
L = Redial Last Number Dialed
n=0
Connect only at the speed selected by S37
P = Pulse dial
n=1 Begin negotiations at the selected speed
S=n = Dial number stored in location n
but allow fallback *
T = Tone dial
W = Wait for dial tone
On - On Line - Puts the modem back into data mode
, = Pause for the duration of S8
from the on-line command mode.
! = Switch hook flash
n=0 Return On Line with no retrain *
; = Return to the command state
n=1 Initiate retrain while returning On line.
En-CommandEcho - Determines it the modem returns
Qn - Responses - Determines if the modem will send
the commands received from the host.
responses to the host.
n=0 Do not echo commands
n=0 Send responses *
n=1 Enable command echo *
n=1 No Responses
Hn - Switch Hook Control - Controls the connection
Sr? - Interrogate Register - Read register value
to the telephone line.
n=0 Switch hook relay opens
Sr=n - Set Register Value - Set register value.
n=1 Switch hook relay closes
Vn - Result Codes - Sets result code type
In - Modem Identification - Provides product data..
n=0 Numeric Result Codes
n=0 Modem identity
n=1 English Word Result Codes*
n=1 ROM Checksum
n=2 Verify Checksum,
Wn - Expanded Result Codes - Adds protocol
n=3 same as n=0
messages to the modem Connect responses.
n=4 Data Pump Firmware Version
n=0 Report DTE Receive Speed
n=5 Code Version
n=1 Report DTE Speed and protocol type
n=9 Country ID
n=2 Report DCE Speed and protocol type *
n=11 Connection Data
Ln - Speaker Volume - Selects level of speaker output.
n=0,1 LowVolume
n=2 Moderate Volume *
n=3 HighVolume
XECOM
(11)
XE2400G
XE2400G AT Commands
Xn - Result Code Set - Sets modem responses
&V - View Active Configuration - Presents current
n=0 Responses 0-4
modem configuration information
n=1 Responses 0-5 & 10
n=2 Responses 0-6 & 10
&W - StoreActive Configuration - Places the current
n=3 Responses 0-5, 7 & 10
configuration into the selected memory location
n=4 Responses 0-8 & 10*
where it can be recalled on a soft reset.
n=5 All Responses
n=6 All Responses
&Zx=n - Store Number n in Location “x” - Permits
n=7
All Responses but extended result codes
placement of a telephone number in the selected
memory location.
Dialing the stored number is
Z - Reset - Causes an immediate modem soft reset and
accomplished with the s=n dial modifier where n is the
reconfigures the modem to the stored values
memory location of the stored number.
x=0
Location 0
&Cn - Data Carrier Detect Operation - Determines
x=1
Location 1
how the modem will present /DCD.
x=2
Location 2
n=0 /DCD forced active at all times
n=1 /DCD indicates modem carrier signal state *
\Gn - In Band Flow Control - Determines how the
modem handles received XON and XOFF flow control
&Dn - Data Terminal Ready selects how the modem
characters.
will react to the removal of /DTR from the host.
n=0
Act on received XON and XOFF characters
n=0 Modem ignores status of /DTR
n=1
Pass XON/XOFF characters in data stream
n=1 If /DTR is removed with the modem on line,
the modem enters on-line command mode
\Kn - Break Response in Data Mode Determines how
n=2 /DTR must be active to maintain link *
the modem will handle an received break signal.
n=0
Enter on-line command mode, do not
&F - Restore Factory Configuration - Returns
transmit break
configuration to its factory settings.
n=1
Clear data buffers, transmit break
n=2
same as n=0
&Kn - Local Flow Control - Determines the operation
n=3
Immediately transmit break
of flow control between the modem and local host.
n=4
same as n=0
n=0
No Flow Control
n=5
Transmit nondestructive break in sequence
n=3
RTS/CTS (hardware) Flow Control *
with data
n=4
XON/XOFF (software) Flow Control
\N - Error Control Mode - Selects which protocols
&Sn - Data Set Ready - Determines how the modem
will be used during data connections.
will present /DSR to the host.
n=0
Buffer Data, No Error Control
n=0
Force /DSR active *
n=1
Direct mode, No Error Control, No buffered
n=1
/DSR Indicates the modem’s readiness to
data
communicate
n=2
MNP Error Correction required
&Tn - ModemTest Modes - Control diagnostics
n=3
Auto Error Correction *
n=0
Terminate Test in Progress
n=4
V.42 Required
n=1
Local Analog Loopback test
n=5
same as n=3
n=3
Local Digital Loopback test
n=7
same as n=3
XECOM
(12)
XE2400G
XE2400G AT Commands
\Qn - Local Flow Control - Sets the flow control used
+GCI = a Country Selection (Hex Format code) -
to regulate data between the modem and local host.
Chooses the modem’s country configuration. The
n=0
Disabled
country configuration is always stored in nonvolatile
n=1
XON/XOFF (Software)
memory.
n=3
RTS/CTS (Hardware) *
a - Country Code
00 = Japan
\Tn - Inactivity Timer - Sets the time the modem waits
04 = Germany
before disconnecting due to inactivity
09 = Australia
n=0
Timer disabled *
0A = Austria
n=1-255 Inactivity Timer in minutes the modem
0F = Belgium
20 = Canada
\Xn - Software Flow Control Pass Through -
26 = People’s Republic of China
Determines how the modem will process received
31 = Denmark
XON and XOFF characters.
3C = Finland
n=0 Process XON and XOFF characters locally *
3D = France
n=1 Pass XON and XOFF characters to the remote
42 = Germany
modem
46 = Greece
50 = Hong Kong
%Cn - Data Compression Control - Determines if
51 = Hungary
Data Compression can be negotiated.
53 = India
n=0
Data Compression Disabled
54 = Indonesia
n=1
Data Compression Permitted *
57 = Ireland
59 = Italy
+DCS=a,b - Select Data Compression Type - Selects
61 = Korea
the type of data compression to be used
6C = Malaysia
a -V.42bis
72 = Europe
0 = Disabled
73 = Mexico
1 = Enabled *
7B = Netherlands
b-V.44
7E = New Zealand
0 - Disabled
82 = Norway
1 - Enabled *
89 = Philipines
8B = Portugal
+DR=a - Select Data Compression Report Type -
9C = Singapore
Determines if a response will be issued to report the
9F = South Africa
Data Compression status
a - Data Compression Report
A0 = Spain
0 = Disabled *
A5 = Sweden
1 = Enabled
A6 = Switzerland
A9 = Thailand
AE = Turkey
+ER=a - Select Error Correction Report Type -
Determines if the Error Control status of the
B4 = United Kingdom
connection will be reported.
B5 = United States
a - Error Correction Report
BC = Vietnam
0 = Disabled *
1 = Enabled
XECOM
(13)
XE2400G
XE2400G AT Commands
+IFC = a,b Local Flow Control - Selects the flow
control settings for the modem.
a - DTE control of data from DCE
0 = No Flow Control
1 = XON/XOFF (Software Flow Control)
2 = RTS/CTS (Hardware Flow Control) *
b - DCE control of data from DTE
0 = No Flow Control
1 = XON/XOFF (Software Flow Control)
2 = RTS/CTS (Hardware Flow Control) *
+IPR=a - Fix Serial Data Rate - Sets the speed of the
serial interface to a predetermined rate.
a - Data Rate Setting
0
= Automatic rate detection
110
= 100 bps
300
= 300 bps
600
= 600 bps
1200
= 1200 bps
2400
= 2400 bps
4800
= 4800 bps
9600
= 9600 bps
14400
= 14,400 bps
19200
= 19,200 bps
38400
= 38,400 bps
57600
= 57,600 bps
115200 = 115,200 bps
XECOM
(14)
XE2400G
XE2400G RESPONSES
Digits
Verbose
Description
0
OK
Command Successful
1
CONNECT
300 bps or higher connection
2
RING
Ring signal detected
3
NOCARRIER
Carrier not detected
4
ERROR
Error in command line
5
CONNECT1200
1200 bps Connection
6
NODIALTONE
No dial tone detected
7
BUSY
Busy signal detected
8
NOANSWER
Remote does not answer
9
RINGING
Ringback signal detected
10
CONNECT2400
2400 bps Connection
30
CIDM
Caller ID Detected
31
FLASH
Hookswitch Flash detected
32
STAS
UK Caller IDAlert detected
33
X
Over current Condition
40
BLACKLISTFULL
The buffer for storing blacklisted numbers is full
41
BLACKLISTED
Attempted Number is Blacklisted
42
NOLINE
No Telephone line is connected to the modem
43
LINEINUSE
The attached Telephone line is in use
70
PROTOCOL:NONE
No Link Protocol negotiated
75
CONNECT75
75 bps connection
77
PROTOCOL V.42
V.42 error correction protocol negotiated
79
PROTOCOL V.42bis
V.42bis data compression protocol negotiated
80
PROTOCOL:ALTERNATE,+CLASS2
MNP2 error correction negotiated
81
PROTOCOL:ALTERNATE,+CLASS3
MNP3 error correction negotiated
82
PROTOCOL:ALTERNATE,+CLASS4
MNP4 error correction negotiated
102
UN-OBTAINABLENUMBER
DTMF Dial attempt on Pulse only Line
XECOM
(15)
XE2400G
XE2400G REGISTER SETTINGS
S0
Answer on nth Ring: S0 sets the modem to
S7
Wait for Carrier after Dialing: S7 determines
automatically answer on the nth ring. Setting S0 to
how long the modem waits for a valid carrier
0 disables automatic answer.
signal after dialing.
Range:
0 to 255
Range:
0 to 255
Units
Rings
Units
Seconds
Default
0
Default
60
S1
Ring Count: S1 is a read-only register showing the
S8
Comma Pause Time: S8 defines the duration of
number of rings detected. If no ring is detected
the pause initiated by a comma in the dialing
within 8 seconds, S1 is reset.
string. The pause is generally used when
Range:
0 to 255
waiting for a second dial tone.
Units
Rings
Range:
0 to 255
Default
0
Units
Seconds
Default
2
S2
Escape Character: S2 sets theASCII escape
character. Values of 0-127 select valid characters;
S10 Carrier Off Disconnect Delay : S10 selects how
values from 128 to 255 disable the escape
long carrier must be lost before the modem
sequence.
disconnects.
Range:
0 to 255
Range:
1 to 255
Units
ASCII Character
Units
0.1 Seconds
Default
43 (+)
Default
20
S3
Line Termination Character: S3 determines the
S11
DTMF Dialing Speed : S11 determines the
ASCII character which will terminate commands
duration and spacing in milliseconds of DTMF
and modem responses.
tones
Range:
0 to 127
Range:
50 to 150
Units
ASCII Character
Units
milliseconds
Default
13 (Carriage Return)
Default
95
S4
Line Feed Character: S4 sets theASCII character
S12
Escape Code Guard Timer: S12 sets the escape
to act as a line feed character in modem responses.
sequence guard timer. If characters are received
Range:
0 to 127
before or after the escape sequence, within the
Units
ASCII Character
guard timer, the modem aborts the escape and
Default
10 (Line Feed)
remains in data mode.
Range:
10 to 255
S5
Backspace Character: S5 defines theASCII
Units
0.02 Seconds
character used as a backspace to edit the
Default
50
command line.
Range:
0 to 127
S14
Wait for Dial Tone Delay: S14 determines how
Units
ASCII Character
long the modem will wait for dial tone when the
Default
8 (Back Space)
W dial modifier is used.
Range:
0 to 255
S6
Dial Tone Wait Time: S6 determines how long the
Units
Seconds
modem waits for dial tone before dialing. The Dial
Default
8
Tone Wait Time cannot be less than two seconds.
Range:
0 to 255
Units
Seconds
Default
3
XECOM
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XE2400G
XE2400G REGISTER SETTINGS
S28
V.34 Modulation: S28 determines ifV.34
S37
Line Data Rate: S37 sets the maximum line data
modulation can be used.
rate that can be negotiated
S28=0
Disabled
0 = Automatic Negotiation
S28=1
Enabled
2 = V.23, 1200/75 bps
Default: 1
3 = 300 bps
5 = 1200 bps
S30
Disconnect Inactivity Timer: S30 sets how long
6 = 2400 bps *
the modem remains on line with no data flowing.
A zero prevents the modem from disconnecting
S48
LAPM Error Control - S48 allows LAPM Error
due to inactivity.
Control to be enabled or disabled.
Range: 0-255
S48 = 128 LAPM Disabled
Units:
Minutes
S48=7 LAPM Enabled
Default: 0
Default: 7
S35
Calling Tone: S35 determines if Calling Tone will
be present on a data call.
S35=0
Disabled
S35=1
Enabled
Default: 1
S36
Response to LAPM Negotiation failure: S36
determines the action taken by the modem if the
selected error correction negotiations are
unsuccessful.
S36=
0 Disconnect
S36=
1 Maintain link with no error correction
S36=
2 Disconnect
S36=
3 Maintain link with no error correction
S36=
4 Attempt MNP; disconnect on MNP
failure
S36=
5 Attempt MNP; maintain link with no
error correction on MNP failure
S36=
6 Attempt MNP; disconnect on MNP
failure
S36=
7 Attempt MNP; maintain link with no
error correction on MNP failure
Default: 7
XECOM
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XE2400G
FCC Instructions
The XE2400G complies with Part 68 of the FCC Rules and Regulations. With each device shipped, there is a label which
contains the FCC Registration Number. The FCC Registration number incorporates the Model Number, Manufacturer
Indentifier, Product Type identifier and Ringer Equivalence Number (REN) for this product. You must, upon request, provide
this information to your telephone company. The format of the FCC Registration Number is shown below.
US: DWEMM01BXE2400G (pending)
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. Typically, 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.
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 you 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.
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 (408) 942-2200 for information on obtaining service or
repairs. 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.
XECOM
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XE2400G
Terms of Sale
Devices sold by XECOM are covered by the warranty provisions appearing in its Terms of Sale only. XECOM makes no war-
ranty, express, statutory, implied, or by description regarding the information set forth herein, or regarding the freedom of the
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 en-
vironmental 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 cir-
cuits, 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) sup-
port 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 ex-
pected to cause failure of the life support device or system, or to affect its safety or effectiveness.
Copyright, Xecom © 2007
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 Incorporated
374 Turquoise Street, Milpitas, CA 95035
Ph:408-942-2000
Fax:408-942-1346
E-Mail: Info@Cermetek.com
XECOM
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XE2400G