Modem Command Guidelines | Ositech comm Trumpcard Data/Fax Modem

Section Four

Modem Command Guidelines

Each of the following modem command descriptions has a list of possible parameters with their default values. The modem loads the default values at initialization (when you turn the power on or you issue the ATZ command). If you exclude a mandatory parameter, the modem assumes a zero value. Invalid commands or parameters return the ERROR message.

The command line may contain a single command or a series of commands. You can separate commands with a space for readability, but, the command line can not exceed 41 characters. The modem performs the command after you send a terminating character. The default terminator is carriage return (ASCII 013), but you can change this by writing to register S3.

You can edit the command line using the backspace character (ASCII 008); change this by writing to register S5. However, the backspace can not be 0, greater than 127, or the terminating character.

All command lines begin with AT (in capital or lower case letters). A command line can be terminated at any time by issuing CTRL-X (ASCII 018). The modem will ignore the command line and return an OK message. You can use A/ to repeat the last command line. The A/ does not require a terminating character.

An escape code sequence (+++) returns the modem to the command mode from the data mode. There must be a time delay between the last character transmitted and the first character of the escape code. You can change the delay by writing to register S12; (default 1 second). The escape code character must occur three times in succession for an escape.

Parameters that are entered for the AT and the AT& commands are limited in value to 0-255, where the parameter is "MOD"ed with 256. The result must be within the specified range; if it is not, the modem returns an ERROR message.

Parameters entered for an S register are also "MOD"ed with 256. Parameters that are out of range are stored in the S register, however, no ERROR message is reported. Functionally the lower or higher register limit is used.

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Trumpcard 14400/28800 Modem

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Ositech comm Trumpcard Data/Fax Modem manual Modem Command Guidelines

Contents

Trumpcard Data/Fax Modem User’s Guide and Reference Copyright How To Contact UsFTP Preface FCC Notice Regulations Governing the Use of Modems Page Vii Contents Modem Command Reference Page Introduction Features Data Mode Facsimile Mode Cellular Mode Unique Features 22bis Industry Standards32bis MNP 42bisMNP 2, 3, 27ter Hardware Installation Preparing for Installation Installing the Trumpcard Modem Pcmcia Modem Adapter connector is keyed to go in one way Line Interface Module Connection to Telephone Network Basic Modem Operation Before You Begin Enabling The Trumpcard Using AT Commands Operating the Trumpcard Making an Outgoing Call Tone or Pulse Dialling Storing a Number Re-Dialling the Last NumberConnection Messages Data Connect 1200TX/75RXFAX Carrier Setting Up for a Non-Error Correcting Connection Ending Your Connection Setting up for a Cellular Connection Receiving an Incoming Call Modem Configurations for Cellular Operation Cellular Phone Configuration Cellular Call Status Section Four Trumpcard 14400/28800 Modem Modem Command Reference Modem Command Guidelines Modem Command Reference Modem Command Summary +MS Modem Command Reference Re-execute Modem Command DescriptionsAnswer ATB0 Bn Set ITU-T or Bell ModeDn Dial ATB1 ATDS=2 En Command Echo Fn Select Line Modulation 14400 only +Ms Select Line Modulation 28800 only Sub-parameter Definitions ATH0 Hn Switch-Hook ControlVFC ATH1 Olume IdentificationMn Speaker Control Nn Automode Detection On Return To The On-Line State Sn Read/Write S Registers Set Pulse Dial as DefaultQn Result Code Display ATQ0 Vn Result Code Form Set Tone Dial as DefaultWn Connect Message Control Xn Extended Result Codes Result Codes Q0, V1, Wn, S95 Carrier Connect Yn Control Long Space Disconnect Zn ResetCn DCD Option Dn DTR Option Restore Factory ConfigurationNone Jn T elephone Jack Selection Gn Set Guard ToneKn DTE/Modem Flow Control Qn Communication Mode Mn Communication ModePn Dial Pulse Ratio disabled for the U.S Ln Line Type Rn RTS/CTS Option Sn DSR Option Tn T est and Diagnostic AT&T7 View Configuration and User ProfilesAT&T6 AT&T8 Yn Designate Default User Profile Wn Store User Profile \Gn Modem-to-Modem Flow Control Zn=x Store Phone Number\Bn T ransmit Break \Kn Break Control AT\K3 AT\K1AT\K5 \Nn Operation Mode Control Cn Compression Control Report Received Signal Level En Enable/Disable Line Quality MonitorReport Line Signal Quality Mn T ransmit Level Adjustment for Cellular Connection Kn MNP Extended ServicesHn Link Negotiation Speed @Mn Initial Cellular Power Level En Compromise Equalizer Init string Event Based Command Init string = Null Modem S Registers Default Register SettingsModem Register Summary Modem Command Reference S95 Extended Result Codes Register Descriptions S7 Wait For Carrier After Dial S5 Backspace CharacterS6 Wait S8 Pause S11 Dtmf T one Duration S10 Lost Carrier To Hang Up DelayS9 Carrier Detect Response Time S12 Escape Code Guard Time S25 Delay to DTR S18 Test TimerS24 Sleep Inactivity Timer S30 Inactivity Timer S33 Xoff Character S32 XON CharacterS36 Lapm Failure Control Range Default S37 Desired Telco Line Speed S38 Delay Before Forced Disconnect S46 Protocol Selection S48 V .42 Negotiation Action S86 Connection Failure Cause Code S95 Extended Result Codes Class 1 Commands Facsimile CommandsClass 2 Commands Modem Test Procedures Local Modem Self-Test Local Analog Loopback Local Analog Loopback with Self- Generated Pattern Remote Digital Loopback Remote Digital Loopback with Self- Generated Pattern Local Digital Loopback Product Information Testing Modem MemoryROM Checksum Test