Ositech comm Trumpcard Data/Fax Modem manual Modem Configurations for Cellular Operation

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Basic Modem Operation

Modem Configurations for Cellular Operation

The Trumpcard’s performance will be improved by modifying the standard (factory default) configuration. For reliable communications, it is also recommended that the Modem to which you are connecting also be MNP10 compatible. Using a MNP10 link will allow negotiation of the Modem link speeds based on current line conditions.

For a MNP10 to MNP10 link negotiation at 1200 bps the Trumpcard initialization string would be:

	AT&F&C1&D2S95=44)M1*H1:E0
	The other Modem, if a landline based Modem, can be initialized with:
	AT&F&C1&D2S95=44
	In this configuration the modems will first establish a MNP10 link at 1200
	bps. They will then make a step up to 4800 bps and then step up to a final
	speed based on the line conditions. The total connect time for this method
	can be up to 60 seconds.
	For a MNP10 to MNP10 link negotiation at 4800 bps (quick connect) the
	Trumpcard initialization string would be:
	AT&F&C1&D2S95=44)M1*H2:E0.
	The other Modem if a landline based Modem can be initialized with
	AT&F&C1&D2S95=44)M1@M18
	In this configuration the modems will first establish a MNP10 link at 4800
	bps and then step up to a final speed based on the line conditions. The
	total connect time for this method can be up to 40 seconds.
	For connecting to modems that do not support MNP10 the Trumpcard
	initialization string would be
	AT&F&C1&D2S95=44:E0%E2
	which will result in the Trumpcard trying to establish the best possible link
	speed. If it is found that connections cannot be reliably made, then it may
	be necessary to force the Trumpcard connection to 4800 bps using the
	initialization string
	AT&F&C1&D2S95=44:E0%E2F6.
Note:	Refer to the [n command for details on how to combine cellular and
	land based initialization strings.

User’s Guide and Reference

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Contents User’s Guide and Reference Trumpcard Data/Fax ModemFTP How To Contact UsCopyright Preface FCC Notice Regulations Governing the Use of Modems Page Vii Contents Modem Command Reference Page Introduction Data Mode FeaturesCellular Mode Facsimile ModeUnique Features 32bis Industry Standards22bis 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 CallConnection Messages Re-Dialling the Last NumberStoring a Number 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 Answer Modem Command DescriptionsRe-execute 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 ATH1Mn Speaker Control IdentificationOlume On Return To The On-Line State Nn Automode DetectionQn Result Code Display Set Pulse Dial as DefaultSn Read/Write S Registers ATQ0Wn Connect Message Control Set Tone Dial as DefaultVn Result Code Form Xn Extended Result Codes Result Codes Q0, V1, Wn, S95 Carrier Connect Cn DCD Option Zn ResetYn Control Long Space Disconnect None Restore Factory ConfigurationDn DTR Option Kn DTE/Modem Flow Control Gn Set Guard ToneJn T elephone Jack Selection 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\K5 AT\K1AT\K3 Cn Compression Control \Nn Operation Mode ControlReport Line Signal Quality En Enable/Disable Line Quality MonitorReport Received Signal Level Hn Link Negotiation Speed Kn MNP Extended ServicesMn T ransmit Level Adjustment for Cellular Connection En Compromise Equalizer @Mn Initial Cellular Power LevelInit string = Null Init string Event Based CommandModem Register Summary Default Register SettingsModem S Registers 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 TimerS36 Lapm Failure Control S32 XON CharacterS33 Xoff Character 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 2 Commands Facsimile CommandsClass 1 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 ROM Checksum Test Testing Modem MemoryProduct Information