Preliminary
XE2486AD
October 2007
New Generation of XE2486 Modems
Description
Features
The XE2486AD is the third generation XE2486 modem
Small Size: 1.2 inches by 0.955 inches by 0.39 inches
from Xecom. It provides a complete, 2400 bps global
thick.
modem for the ‘86 footprint. The XE2486AD uses the
Data transfer at rates from 300 bps to 2400 bps
new Xecom XE2400G modem to continue Xecom’s
support of loyal customers who designed the XE2486
Modem Control and Configuration via industry
standard AT Commands.
into their systems since 1996.
Supports V.42 and MNP error correction
The XE2486AD provides traditional Xecom features
such as the transferable FCC Part 68 Registration and
Shared Line Features prevent modem operation from
interfering with voice communications.
non volatile configuration storage, but also supports
new features such as error correction and global
Nonvolatile memory stores modem configuration.
compliance. Existing XE2486 users can choose to use
Complete integrated DAA.
the newer and less expensive model just as they have
User Transferrable FCC Part 68 Registration
always used the XE2486 or use the change as an
opportunity to enhance their product line.
UL60950compliant
Models
Complies with telephone networks around the world.
XE2486AD -V.22bis, DIP package
5 Volt Power operation;
XE2486AD BLOCK DIAGRAM
XECOM
(1)
XE2486AD
XE2486AD Mechanical Specifications
Pin dimensions 0.010 inches by 0.020 inches
Inches
MM
Dim.
Description
Min
Typ
Max
Min
Typ
Max
A
Module Height
0.380
0.390
0.400
9.67
9.91
10.16
B
Module Length
1.190
1.200
1.210
30.23
30.48
30.73
C
Module Width
0.950
0.955
0.960
24.13
24.26
24.38
D
Pin-to-Pin Spacing
0.090
0.100
0.110
2.29
2.54
2.79
E
Pin-to-Edge
0.040
0.050
0.060
1.02
1.27
1.52
F
Pin Row Length
1.090
1.100
1.110
27.69
27.94
28.19
G
Pin Row to Pin Row
0.790
0.800
0.810
20.07
20.32
20.57
H
Edge to Pin Row
0.070
0.080
0.090
1.78
2.03
2.29
J
Pin Length
0.120
0.130
0.140
3.05
3.30
3.56
XECOM
(2)
XE2486AD
XE2486AD Pin Configuration
XE2486AD (TopView)
Ring • 1
22
/RTS
Tip
2
21
RESET
20
GND
N/C
3
19
VCC
N/C
4
18
N/C
SPKR
5
17
/DCD
N/C
6
16
/CTS
N/C
7
15
/RI
N/C
8
14
/DSR
N/C
9
13
/DTR
TXD
10
12
/N/C
RXD
11
Pin Descriptions
PIN NAME
DESCRIPTION
1
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.
The telephone company places a DC “Battery” voltage across Tip and Ring on public
switched telephone lines. The XE2486AD 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 to be maintained between
Tip and Ring and all other circuits. Clearance is the shortest distance between conductive
circuits; creepage is the distance between conductive surfaces along the surface
2
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.
UL60950 requires minimum creepage and clearances distances to be maintained between
Tip and Ring and all other circuits. Clearance is the shortest distance between conductive
circuits; creepage is the distance between conductive surfaces along the surface
3,4
N/C
No Connection
XECOM
(3)
XE2486AD
XE2486AD Pin Descriptions (continued)
PIN
NAME
DESCRIPTION
5
SPKR
SPKR provides a Pulse Width Modulated version of the signal on Tip and Ring allow.
The signal on SPKR is controlled by the ATL and ATM commands.
6-9
N/C
No Connection
10
TXD
TXD provides the path for transmitted data and modem commands to be passed from
the host terminal equipment to the modem.
11
RXD
RXD provides the path for received data and modem responses to be sent from the
modem to the host terminal equipment.
12
N/C
No Connection
13
/DTR
/DTR is an active low input to the modem.An active /DTR signal traditionally indicates
that the terminal is available for communications. The operation of /DTR is controlled
by the AT&D command.
14
/DSR
/DSR is active low output from the modem. The /DSR signal typically indicates that the
modem has established a communications link. The AT&S command determines the
operation of the /DSR signal.
15
/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.
16
/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.
17
/DCD
/DCD is an active low output from the modem. /DCD normally indicates the presence
of a valid carrier signal. TheAT&C command determines when the XE2486AD asserts
the /DCD signal.
18
N/C
No Connect
19
VCC
+5 Volt power for the modem
20
Ground
Ground provides the reference voltage for all host interface signals.
21
RESET
RESET is an active high 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.
22
/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.
XECOM
(4)
XE2486AD
XE2486AD Electrical Specifications
Parameter
Min
Typ
Max
Units
Comments
VCC
4.75
5.0
5.25
Volts
ICC
90
100
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
XE2486ADABSOLUTE MAXIMUM RATINGS
VCC
6.0Volts
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 XE2486AD can be ordered with an Operating Temperature of -40 O C to +85 O C at extra cost. Order
XE2486AD-ITR or to specify Industrial Temperature Range (ITR).
XECOM
(5)
XE2486AD
XE2486AD Typical Connection Diagram
Parts List for XE2486ADTypical 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 ES2211N681K502NSTM. 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
(6)
XE2486AD
XE2486AD Connection Data
The XE2486AD 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
(7)
XE2486AD
XE2486AD AT Commands
The XE2486AD uses "AT" commands for
If the command buffer overflows, the modem
configuration and control. This section describes the
issues an "ERROR" result code, and the
AT command format and lists the commands,
command line is not executed. Register S3 allows
registers and result codes.
the user to select a character other than a carriage
return to terminate the command line.
Command Mode: The
XE2486AD
enters
command mode on power-up, reset, a lost
Re-Execute
Last
Command
-
The
A/
connection, or receipt of the escape code. In
command causes the modem to re-execute the
command mode the modem accepts commands
last command line. This is the only command
from the host on transmit data. Appropriate result
which does not require the "AT" prefix.
codes are returned 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
(8)
XE2486AD
CONVERTING FROM THE XE2486 TO THE XE2486AD
Xecom has been building the XE2486 Modem Module since 1996. While we would like to continue to
offer this modem without modification, the modem chip used to create the XE2486 has been discontinued
by our supplier. We have identified a suitable replacement for that discontinued chip but with new features
created over the last decade, we are concerned about compatibility with the old modem. To achieve
compatibility Xecom has loaded a modified modem configuration into the XE2486AD’s nonvolatile
memory. These changes will be active on power-up and maintained after a hard or soft reset. Below is a
list of the command changes.
Command
Factory Default
Xecom Nonvolatile Setting
ATB
B0
B1; Select Bell 212A mode at 1200 bps
ATW
W2
W0: Do not report protocol type
AT&C
&C1
&C0: /DCD active with no modem carrier detected
AT&D
&D2
&D0: Modem ignores status of /DTR
AT&K
&K3
&K0: Disable flow control
AT\N1
\N3
\N1: Error correction disabled;
AT\Q
\Q3
\Q0: Disable local flow control
AT%C
%C1
%C0: Disable data compression
AT+IFC
+IFC=2,2
+IFC=0,0: Disabled flow control in both directions
ATS6
S6=3
S6=2; Wait 2 seconds for dial tone
ATS7
S7=30
S7=30; Wait 30 seconds for carrier to be detected
ATS10
S10=20
S10=14; Disconnect after losing carrier for 1.4 seconds
ATS37
S37=0
S37=6; Default connect speed 2400 bps
Notes:
1) Using the AT&F command to return to factory defaults will cancel the configuration changes Xecom
loaded into nonvolatile memory and bring up the default settings supplied by the chip manufacturer. This
could prevent the modem from working in your application.
2) Any of these commands can be changed as required to meet system requirements. The changes only
attempt to duplicate the configuration of the XE2486AD in its default state.
3) The configuration required for your system can be loaded into the XE2486AD’s nonvolatile memory
using the AT&W command. The AT&W command stores the current configuration into nonvolatile
memory.
XECOM
(9)
XE2486AD
SWITCHING FROM THE XE2486 TO THE XE2486AD
Even with the default settings on the XE2486AD changed to match the XE2486. the /DCD and /DSR
signals operate differently than they did on the XE2486. The differences in operation are illustrated below.
/DCD Operation
The XE2486AD with the AT&C0 command setting offers fewer transitions on the /DCD line than does
the old XE2486. You need to be aware of these differences if you use these transitions to trigger action in
your code. The XE2486 returns the /DCD to the inactive state after 5 seconds when the modem drops
the line. The XE2486AD only goes inactive only during the power-on or reset sequences. The illustration
below shows the operation of DCD on the two modems
/DCDOperationwithAT&C0
/DSR Operation
As with the/DCD line the operation of the /DCD line differs between the XE2486AD and XE2486. AS
with the /DCD output the /DSR output on the XE2486 shows transitions each time the line is dropped. The
XE2486AD deactivates /DCD only on power cycling or reset.
/DSR Operation withAT&S0
XECOM
(10)
XE2486AD
XE2486AD AT Commands
An asterisk indicates the factory default
Ln - Speaker Volume - Selects level of speaker output.
n=0,1 LowVolume
A - Answer Command - Causes the modem to
n=2 Moderate Volume *
immediately go off-hook and attempt to a connection
n=3 HighVolume
Bn - Bell or CCITT default - Determines if the modem
Mn - Speaker Activity - Determines when the speaker
will prefer CCITT or Bell212A modulation at 1200 bps.
will be active.
n=0 Use CCITT V.22 at 1200 bps
n=0 Speaker off
n=1 Use Bell 212A at 1200 bps *
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.
0-9,A-D, #, * = Dialing Digits
Nn - Link Negotiations - Selects how Register S37 will
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 same as n=0
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
XECOM
(11)
XE2486AD
XE2486AD 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 connection
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
n=3
Auto Error Correction
&Tn - Modem Test Modes - Controls diagnostics.
n=4
V.42 Required
n=0
Terminate Test in Progress
n=5
same as n=3
n=1
Local Analog Loopback test
n=7
same as n=3
n=3
Local Digital Loopback test
XECOM
(12)
XE2486AD
XE2486AD 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)
XE2486AD
XE2486AD AT Commands
+IFC = a,b Local Flow Control - Selects the flow
+MS - Select Modulation -
control settings for the modem.
AT+MS sets the modem modulation and data rates.
a - DTE control of data from DCE
The command format is: AT+MS=a,b,c,d,e,f<CR>
0 = No Flow Control *
a - modulation type
1 = XON/XOFF (Software Flow Control)
V21 -V.21 (300 bps)
2 = RTS/CTS (Hardware Flow Control)
V22 -V.22 (1200 bps)
b - DCE control of data from DTE
V.22B -V.22bis (1200 or 2400 bps)
0 = No Flow Control *
b - Automode Detection
0 -Automatic Negotiation Disabled
1 = XON/XOFF (Software Flow Control)
1 -Automatic Negotiation Enabled
2 = RTS/CTS (Hardware Flow Control) *
c - Min receive data rate (300-2400 bps)
d - Max receive data rate (300-2400 bps)
+IPR=a - Fix Serial Data Rate - Sets the speed of the
e - Min transmit data rate (300-2400 bps)
serial interface to a predetermined rate.
f - Max transmit data rate (300-2400 bps)
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)
XE2486AD
XE2486AD 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)
XE2486AD
XE2486AD REGISTER SETTINGS
S0
Answer on nth Ring: S0 sets the modem to
S6
Dial Tone Wait Time: S6 determines how long
automatically answer on the nth ring. Setting S0 to
the modem waits for dial tone before dialing.
0 disables automatic answer.
The Dial Tone Wait Time cannot be set to less
Range:
0 to 255
than two seconds.
Units
Rings
Range:
0 to 255
Default
0
Units
Seconds
Default
2
S1
Ring Count: S1 is a read-only register showing the
number of rings detected. If no ring is detected
S7
Wait for Carrier after Dialing: S7 determines
within 8 seconds, S1 is reset.
how long the modem waits for a valid carrier
Range:
0 to 255
signal after dialing.
Units
Rings
Range:
0 to 255
Default
0
Units
Seconds
Default
30
S2
Escape Character: S2 sets theASCII escape
character. Values of 0-127 select valid characters;
S8
Comma Pause Time: S8 defines the duration of
values from 128 to 255 disable the escape
the pause initiated by a comma in the dialing
sequence.
string. The pause is generally used when
Range:
0 to 255
waiting for a second dial tone.
Units
ASCII Character
Range:
0 to 255
Default
43 (+)
Units
Seconds
Default
2
S3
Line Termination Character: S3 determines the
ASCII character which will terminate commands
S10 Carrier Off Disconnect Delay : S10 selects how
and modem responses.
long carrier must be lost before the modem
Range:
0 to 127
disconnects.
Units
ASCII Character
Range:
1 to 255
Default
13 (Carriage Return)
Units
0.1 Seconds
Default
14
S4
Line Feed Character: S4 sets theASCII character
to act as a line feed character in modem responses.
S11
DTMF Dialing Speed : S11 determines the
Range:
0 to 127
duration and spacing in milliseconds of DTMF
Units
ASCII Character
tones
Default
10 (Line Feed)
Range:
50 to 150
Units
milliseconds
S5
Backspace Character: S5 defines theASCII
Default
95
character used as a backspace to edit the
command line.
Range:
0 to 127
Units
ASCII Character
Default
8 (Back Space)
XECOM
(16)
XE2486AD
XE2486AD REGISTER SETTINGS
S12
Escape Code Guard Timer: S12 sets the escape
S36
Response to LAPM Negotiation failure: S36
sequence guard timer. If characters are received
determines the action taken by the modem if the
before or after the escape sequence, within the
selected error correction negotiations are
guard timer, the modem aborts the escape and
unsuccessful.
remains in data mode.
S36 = 0
Disconnect
Range:
10 to 255
S36 = 1
Maintain link with no error
Units
0.02 Seconds
correction
Default
50
S36 = 2
Disconnect
S36 = 3
Maintain link with no error
S14
Wait for Dial Tone Delay: S14 determines how
correction
long the modem will wait for dial tone when the
S36 = 4
Attempt MNP; disconnect on MNP
W dial modifier is used.
failure
Range:
0 to 255
S36 = 5
Attempt MNP; maintain link with
Units
Seconds
no error correction on MNP failure
Default
8
S36 = 6
Attempt MNP; disconnect on MNP
failure
S28
V.34 Modulation: S28 determines ifV.34
S36 = 7
Attempt MNP; maintain link with
modulation can be used.
no error correction on MNP failure
S28=0
Disabled
Default: 7
S28=1
Enabled
Default: 1
S37
Line Data Rate: S37 sets the maximum line data
rate that can be negotiated
S30
Disconnect Inactivity Timer: S30 sets how long
0 = Automatic Negotiation *
the modem remains on line with no data flowing.
2 = V.23, 1200/75 bps
A zero prevents the modem from disconnecting
3 = 300 bps
due to inactivity.
5 = 1200 bps
Range: 0-255
6 = 2400 bps
Units:
Minutes
Default: 0
S48
LAPM Error Control - S48 allows LAPM Error
Control to be enabled or disabled.
S35
Calling Tone: S35 determines if Calling Tone will
S48 = 128 LAPM Disabled
be present on a data call.
S48=7 LAPM Enabled
S35=0
Disabled
Default:128
S35=1
Enabled
Default: 1
XECOM
(17)
XE2486AD
FCC Instructions
The XE2486AD 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: DWEMM00BXE2400G (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
(18)
XE2486AD
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:408-942-2200
Fax:408-942-1346
E-Mail: Info@Cermetek.com
XECOM
(19)
XE2486AD