Synxcom SM9256D User manual

SM9256D and SM9234D Modems
User’s Guide
0049-2500-001 Rev B

The products and programs described in this User’s Guide are licensed products of Synxcom
Corporation. This User’s Guide contains proprietary information protected by copyright, and this
User’s Guide and all accompanying hardware and documentation are copyrighted.
Synxcom Corporation does not warrant that the hardware will work properly in all environments
and applications, and makes no warranty and representation, either implied or expressed, with
respect to the quality, performance, merchantability, or fitness for a particular purpose.
Synxcom Corporation will makes best efforts to update or keep current the information in this
User’s Guide, and reserves the right to make changes to this User’s Guide and/or product without
notice.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic
or mechanical, including photocopying, recording, or information storage and retrieval systems,
for any purpose other than the purchaser's personal use, without the express written permission of
Synxcom Corporation.
Copyright 2010 Synxcom Corporation.
1000 Dove Street, Suite 305
Newport Beach, California 92660
Tel: [phone]
Fax: [phone]
Web site: www.Synxcom.com

Page iii
FCC Requirements
This device complies with Part 15 Class A of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 Class A of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the receiver.
Connect the equipment to an outlet on a circuit other than the one to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
If none of these actions resolves the problem, consult your distributor or an experienced
radio/television technician for additional suggestions.
Additionally, Section 15.838, paragraph d), of the FCC Rules and Regulations states: “Where
special accessories, such as shielded cables, are required in order to meet FCC regulations,
shielded cables must be used with this equipment. Operation with non-approved equipment or
unshielded cables is likely to result in interference to radio and TV reception. The user is
cautioned that changes and modifications to this equipment without the approval of the
manufacturer could void the user’s authority to operate this equipment.
Department of Canada Statement
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numerique de la classe A respecte toutes les exigences du Reglement sur le materiel
brouilleur du Canada.

Page iv
FCC Part 68 Statement
This equipment complies with the Federal Communications Commission’s (FCC) Rules and Regulations
47 CFR Part 68 and the Administrative Council on Terminal Attachments (ACTA) adopted technical
criteria TIA/EIA/IS-968, Telecommunications – Telephone Terminal Equipment – Technical Requirements
for Connection of Terminal Equipment To the Telephone Network, July 2001. On the plastic enclosure of
this equipment is a label that contains the ACTA Registration number. You must, upon request, provide
this information to your telephone company.
This equipment uses USOCs RJ11 connector.
A telephone cord and modular plug compliant with TIA/EIA/IS-968 are provided with this equipment. This
equipment is designed to be connected to the telephone network or premises wiring using a compatible
modular jack, which is Part 68 compliant. See installation instructions for details.
The REN is useful to determine the quantity of devices you may connect to your telephone line and still
have all those devices ring when your telephone number is called. In most, but not all areas, the sum of the
REN's 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 your line, as determined by the REN, you should contact your local telephone
company to determine the maximum REN for your calling area. (NOTE: REN are associated with loop-
start and ground-start ports. Do not use for E&M or digital ports).
If your telephone equipment causes harm to the telephone network, the Telephone Company may
discontinue your service temporarily. If possible, they will notify you in advance. But if advance notice is
not practical, you will be notified as soon as possible. You will be informed of your right to file a complaint
with the FCC.
Your telephone company may make changes in its facilities, equipment, operations or procedures that could
affect the 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 telephone equipment, please contact Synxcom Corporation, 1000 Dove
Street, Newport Beach, CA 92660, Phone [phone] for information on obtaining service or repairs.
The telephone company may ask that you disconnect this equipment from the network until the problem has
been corrected or until you are sure that the equipment is not malfunctioning.
Please note: No user serviceable parts contains in this equipment.
This equipment may not be used on coin service provided by the telephone company. Connection to party
lines is subject to state tariffs.
The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or
other electronic device, including fax machines, to send any message unless such message clearly contains
in a margin at the top or bottom of each transmitted page or on the first page of the Transmission, the date
and time it is sent and an identification of the business or other entity, or other individual sending the
message and the telephone number of the sending machine or such business, other entity, or individual.
(The telephone number provided may not be a 900 number or any other number for which charges exceeds

Page v
local or long-distance transmission charges.)

Page vii
Contents
FEATURES........................................................................................................................................................15
MODEL NUMBERS AND ORDER INFORMATION.....................................................................................16
UNPACKING YOUR MODEM........................................................................................................................19
ADDITIONAL ITEMS YOU NEED.................................................................................................................19
SETTING-UP AND INSTALLING YOUR MODEM......................................................................................19
INSTALLING THE DRIVER ...........................................................................................................................22
WINDOWS XP...................................................................................................................................................22
WINDOWS 2000................................................................................................................................................22
LEDS ..................................................................................................................................................................23
MODEM OPERATION.....................................................................................................................................23
SERIAL PORT DATA SPEED ................................................................................................................................23
AUTO-ANSWER MODE ......................................................................................................................................23
CALL ANSWER TESTING..............................................................................................................................25
CALL ORIGINATING TESTING....................................................................................................................25
STORING TELEPHONE NUMBERS..............................................................................................................29
CONFIGURING THE $DL TIMEOUT............................................................................................................30
ENABLING THE AUTO-CONNECT FEATURE ...........................................................................................30
VIEWING THE CURRENT $DL SETTING....................................................................................................30
SYNTAX AND PROCEDURES ........................................................................................................................31
ALPHABET........................................................................................................................................................31
DTE COMMANDS LINES....................................................................................................................................31
Command Line General Format..................................................................................................................32
Command Line Editing ...............................................................................................................................32
Command Line Echo...................................................................................................................................32
Repeating a Command Line........................................................................................................................33
Types of DTE Commands............................................................................................................................33
BASIC SYNTAX COMMANDS ..............................................................................................................................33
Basic Syntax Command Format ..................................................................................................................33
S Parameters...............................................................................................................................................34
EXTENDED SYNTAX COMMANDS .......................................................................................................................35
Command Naming Rules.............................................................................................................................35
Values.........................................................................................................................................................35
Action Commands.......................................................................................................................................37
Parameter Commands.................................................................................................................................38

Page viii
Additional Syntax Rules..............................................................................................................................40
ISSUING COMMANDS.........................................................................................................................................40
EXECUTING COMMANDS ...................................................................................................................................40
Aborting Commands ...................................................................................................................................41
Handling of Invalid Numbers and S-Parameter Values................................................................................41
MODEM RESPONSES..........................................................................................................................................41
Responses...................................................................................................................................................42
Extended Syntax Result Codes ....................................................................................................................43
+<name>: <compound_value>Information Text Formats for Test Commands...........................................45
DATA COMMAND SET...................................................................................................................................47
COMMAND GUIDELINES ....................................................................................................................................47
Escape Code Sequence ...............................................................................................................................47
DATA COMMANDS ............................................................................................................................................47
Generic Modem Control .............................................................................................................................47
Z - Soft Reset and Restore Profile ...............................................................................................................47
+FCLASS - Select Active Service Class ......................................................................................................48
+VCID - Caller ID (CID)............................................................................................................................49
+VRID - Report Retrieved Caller ID (CID).................................................................................................49
\N - Operating Mode...................................................................................................................................50
I - Identification..........................................................................................................................................50
+GMI - Request Manufacturer Identification..............................................................................................51
+GMI9 - Request Conexant Identification...................................................................................................51
+GMM - Request Model Identification .......................................................................................................52
+GMR - Request Revision Identification.....................................................................................................52
+GCAP - Request Complete Capabilities List.............................................................................................52
+GCI - Country of Installation....................................................................................................................52
&F - Restore Factory Configuration (Profile).............................................................................................53
&T - Local Analog Loopback Test...............................................................................................................54
&Y - Designate a Default Reset Profile.......................................................................................................54
&W - Store Current Configuration..............................................................................................................54
&Zn=x - Store Telephone Number ..............................................................................................................54
%7 - Plug and Play Serial Number..............................................................................................................55
%8 - Plug and Play Vendor ID and Product Number...................................................................................55
**- Load Flash Memory..............................................................................................................................55
DTE-Modem Interface Commands..............................................................................................................58
E - Command Echo.....................................................................................................................................58
Q - Quiet Results Codes Control.................................................................................................................58
V - Result Code Form..................................................................................................................................58
W - Connect Message Control.....................................................................................................................59
X - Extended Result Codes..........................................................................................................................59
&C - RLSD (DCD) Option ..........................................................................................................................63
&D - DTR Option........................................................................................................................................64
&K - Flow Control......................................................................................................................................65
&M - Asynchronous/Synchronous Mode Selection.......................................................................................65
&Q - Sync/Async Mode...............................................................................................................................66
&R - RTS/CTS Option.................................................................................................................................67
&S - DSR Override .....................................................................................................................................67
&X - Select Synchronous Clock Source.......................................................................................................67
+IPR - Fixed DTE Rate ..............................................................................................................................68
+IFC - DTE-Modem Local Flow Control....................................................................................................69
+ILRR - DTE-Modem Local Rate Reporting...............................................................................................69
Call Control................................................................................................................................................70
T - Set Tone Dial Default.....................................................................................................................................72

Page ix
P - Set Pulse Dial Default...........................................................................................................................72
A - Answer..................................................................................................................................................73
H - Disconnect (Hang-Up)..........................................................................................................................73
O - Return to On-Line Data Mode...............................................................................................................74
L - Speaker Volume.....................................................................................................................................74
M - Speaker Control ...................................................................................................................................74
&G - Select Guard Tone..............................................................................................................................75
&P - Select Pulse Dial Make/Break Ratio...................................................................................................75
&V - Display Current Configuration and Stored Profiles............................................................................75
&V1 - Display Last Connection Statistics....................................................................................................76
\V - Single Line Connect Message Enable...................................................................................................77
%L - Report Line Signal Level ....................................................................................................................78
%Q - Report Line Signal Quality.................................................................................................................78
*B - Display Blacklisted Numbers...............................................................................................................79
–PPD= - Extension Pickup Notification through 16550 UART....................................................................79
–STE= - Set Telephony Extension...............................................................................................................79
Modulation Control Commands..................................................................................................................86
+MS - Modulation Selection.......................................................................................................................86
+MR - Modulation Reporting Control.........................................................................................................89
+MCR: Report Syntax.................................................................................................................................89
+MRR: Report Syntax.................................................................................................................................90
%E - Enable/Disable Line Quality Monitor and Auto-Retrain or Fallback/Fall...........................................90
%U - Select µ-Law or A-Law Codec Type....................................................................................................91
B - CCITT or Bell .......................................................................................................................................91
Error Control Command.............................................................................................................................92
+ES - Error Control and Synchronous Mode Selection...............................................................................92
+EB - Break Handling in Error Control Operation.....................................................................................93
+ESR - Selective Repeat.............................................................................................................................94
+EFCS - 32-bit Frame Check Sequence......................................................................................................94
+ER - Error Control Reporting...................................................................................................................94
+ER: <value>............................................................................................................................................95
+ER: <type>..............................................................................................................................................95
+ETBM - Call Termination Buffer Management.........................................................................................95
\B - Transmit Break to Remote....................................................................................................................96
\K - Break Control......................................................................................................................................96
-K - MNP Extended Services.......................................................................................................................97
3.2.6 Data Compression Commands.......................................................................................................98
+DS - Data Compression............................................................................................................................98
+DS44 - V.44 Compression Select ..............................................................................................................98
+DR - Data Compression Reporting......................................................................................................... 100
+DR: <type> Intermediate Result Code ...................................................................................................100
%C - Enable/Disable Data Compression................................................................................................... 101
V.8/V.8bis Commands...............................................................................................................................101
+A8E - V.8 and V.8bis Operation Controls...............................................................................................101
+A8I: - CI Signal Indication..................................................................................................................... 102
Synchronous Access Mode Commands...................................................................................................... 103
+ESA - Configure Synchronous Access Submode......................................................................................103
+H - Enable/Disable RPI..........................................................................................................................104
+ITF - Transmit Flow Control Thresholds.................................................................................................105
Diagnostic Commands..............................................................................................................................106
#UD – Last Call Status Report..................................................................................................................106
Compatibility Commands.......................................................................................................................... 115
&L - Leased Line Operation...................................................................................................................... 115
)M - Enable Cellular Power Level Adjustment ..........................................................................................115

Page x
@M - Initial Cellular Power Level Setting................................................................................................115
:E - Compromise Equalizer Enable Command ..........................................................................................116
FastConnect Commands............................................................................................................................116
$F – FastConnect Control.........................................................................................................................116
V.92 +P and –Q Commands...................................................................................................................... 117
+PCW - Call Waiting Enable.................................................................................................................... 117
+PMH - Modem-on-Hold Enable..............................................................................................................117
+PMHT – Modem-on-Hold Timer............................................................................................................. 118
+PMHR - Initiate Modem-on-Hold...........................................................................................................118
+PIG - PCM Upstream Ignore..................................................................................................................119
+PMHF - V.92 Modem-on-Hold Hook Flash ............................................................................................119
+PQC - V.92 Phase 1 and Phase 2 Control...............................................................................................120
+PSS - Use Short Sequence.......................................................................................................................120
-QCPC - Force Full Startup Procedure Next Connection..........................................................................121
-QCPS - Enable Quick Connect Profile Save ............................................................................................121
S-PARAMETERS ..............................................................................................................................................122
FACTORY DEFAULTS............................................................................................................................. 123
S-PARAMETER DEFINITIONS................................................................................................................125
S0 - Number of Rings to Auto-Answer .......................................................................................................125
S1 - Ring Counter..................................................................................................................................... 125
S2 - Escape Character..............................................................................................................................125
S3 - Carriage Return Character................................................................................................................125
S4 - Line Feed Character..........................................................................................................................125
S5 - Backspace Character.........................................................................................................................126
S6 - Wait Time before Blind Dialing or for Dial Tone...............................................................................126
S7 - Wait Time for Carrier, Silence, or Dial Tone.....................................................................................126
S8 - Pause Time For Dial Delay................................................................................................................127
S9 - Carrier Detect Response Time ...........................................................................................................127
S10 - Lost Carrier To Hang Up Delay.......................................................................................................127
S11 - DTMF Tone Duration......................................................................................................................128
S12 - Escape Prompt Delay (EPD)............................................................................................................128
S14 - General Bit Mapped Options Status................................................................................................. 128
S16 - Test Mode Bit Mapped Options Status..............................................................................................129
S19 – Reserved .........................................................................................................................................129
S20 – Reserved .........................................................................................................................................129
S21 - V.24/General Bit Mapped Options Status......................................................................................... 129
S22 - Speaker/Results Bit Mapped Options Status.....................................................................................130
S23 - General Bit Mapped Options Status................................................................................................. 130
S24 - Sleep Inactivity Timer......................................................................................................................130
S25 - Delay To DTR Off............................................................................................................................130
S26 - RTS to CTS Delay............................................................................................................................131
S27 - Bit Mapped Options Status...............................................................................................................131
S28 - Bit Mapped Options Status...............................................................................................................131
S29 - Flash Dial Modifier Time................................................................................................................. 132
S30 - Disconnect Inactivity Timer.............................................................................................................132
S31 - Bit Mapped Options Status...............................................................................................................132
S36 - LAPM Failure Control.....................................................................................................................133
S38 – Delay Before Forced Hang up.........................................................................................................133
S39 - Flow Control Bit Mapped Options Status.........................................................................................133
S40 - General Bit Mapped Options Status................................................................................................. 134
S41 - General Bit Mapped Options Status................................................................................................. 134
S46 - Data Compression Control...............................................................................................................134
S48 - V.42 Negotiation Control.................................................................................................................135
S48=7 Enable negotiation. (Default.).................................................................................................135