Ositech comm Trumpcard Data/Fax Modem manual Nn Operation Mode Control, Cn Compression Control

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Modem Command Reference

\Nn — Operation Mode Control

Parameters

0, 1, 2, 3, 4, or 5

Default3

Selects the operating mode the modem uses while connected (see &Qn command).

Examples

AT\N0	Selects Normal (speed buffering) mode. This option
	takes effect at physical connection time.
AT\N1	Same as AT\N0.
AT\N2	Selects reliable link mode. This defines the modem-
	to-modem connection to require error correction
	connection. If an attempt to establish the reliable
	link fails, the modem disconnects.
AT\N3	Selects auto-reliable link mode. The modem will
	attempt an error-correction connection but will
	fallback to Normal mode if unable to establish an
	error correcting connection. This command takes
	effect at physical connection time only.
AT\N4	Selects LAPM error-correction mode. The modem
	will attempt a LAPM error-correction connection. If
	the attempt fails, the modem disconnects.
AT\N5	Selects MNP error-correction mode. The modem will
	attempt a MNP error-correction connection. If the
	attempt fails, the modem disconnects.
%Cn — Compression Control
Parameters:	0, 1, 2, or 3
Default	3

Enables or disables data compression negotiation. The modem can only perform data compression on an error-correcting link.

Examples

AT%C0	Disables data compression
AT%C1	Enables MNP 5 data compression
AT%C2	Enables V.42bis data compression
AT%C3	Enables both MNP 5 and V.42bis data compression

User’s Guide and Reference

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Contents User’s Guide and Reference Trumpcard Data/Fax ModemCopyright How To Contact UsFTP Preface FCC Notice Regulations Governing the Use of Modems Page Vii Contents Modem Command Reference Page Introduction Data Mode FeaturesCellular Mode Facsimile ModeUnique Features 22bis Industry Standards32bis MNP 2, 3, 42bisMNP 27terPreparing for Installation Hardware InstallationInstalling the Trumpcard Modem Pcmcia Modem Adapter connector is keyed to go in one way Line Interface Module Connection to Telephone Network Basic Modem Operation Enabling The Trumpcard Before You BeginOperating the Trumpcard Using AT CommandsTone or Pulse Dialling Making an Outgoing CallStoring a Number Re-Dialling the Last NumberConnection Messages FAX Connect 1200TX/75RXData CarrierEnding Your Connection Setting Up for a Non-Error Correcting ConnectionReceiving an Incoming Call Setting up for a Cellular ConnectionModem 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 +MS Modem Command SummaryModem Command Reference Re-execute Modem Command DescriptionsAnswer Dn Dial Bn Set ITU-T or Bell ModeATB0 ATB1ATDS=2 Fn Select Line Modulation 14400 only En Command EchoSub-parameter Definitions +Ms Select Line Modulation 28800 onlyVFC Hn Switch-Hook ControlATH0 ATH1Olume IdentificationMn Speaker Control On Return To The On-Line State Nn Automode DetectionQn Result Code Display Set Pulse Dial as DefaultSn Read/Write S Registers ATQ0Vn 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 Pn Dial Pulse Ratio disabled for the U.S Mn Communication ModeQn Communication Mode Ln Line TypeSn DSR Option Rn RTS/CTS OptionTn T est and Diagnostic AT&T6 View Configuration and User ProfilesAT&T7 AT&T8Wn Store User Profile Yn Designate Default User Profile\Bn T ransmit Break Zn=x Store Phone Number\Gn Modem-to-Modem Flow Control \Kn Break ControlAT\K3 AT\K1AT\K5 Cn Compression Control \Nn Operation Mode ControlReport 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 En Compromise Equalizer @Mn Initial Cellular Power LevelInit string = Null Init string Event Based CommandModem S Registers Default Register SettingsModem Register Summary Modem Command Reference S95 Extended Result Codes Register Descriptions S6 Wait S5 Backspace CharacterS7 Wait For Carrier After Dial S8 PauseS9 Carrier Detect Response Time S10 Lost Carrier To Hang Up DelayS11 Dtmf T one Duration S12 Escape Code Guard TimeS24 Sleep Inactivity Timer S18 Test TimerS25 Delay to DTR S30 Inactivity TimerS33 Xoff Character S32 XON CharacterS36 Lapm Failure Control S37 Desired Telco Line Speed Range DefaultS46 Protocol Selection S38 Delay Before Forced DisconnectS86 Connection Failure Cause Code S48 V .42 Negotiation ActionS95 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