Ositech comm Trumpcard Data/Fax Modem manual Local Analog Loopback with Self- Generated Pattern

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Section Five

Local Analog Loopback with Self- Generated Pattern

This test verifies the integrity of the local Modem transmit and receive circuits. The test is only functional when the Modem is in direct mode (&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less.

For this test, the Modem must be in command mode.

To start the test:

1.Enter AT&T8 [ENTER] and wait for a while. The Modem will not respond visibly.

2.Enter AT&T0 [ENTER] to mark the end of the test. The Modem will respond with a three-digit number indicating the test results.

During this test, a continuous data sequence is sent by the local Modem transmitter and picked up by the local Modem receiver. The transmitted and received data sequences are compared and the Modem then returns a three-digit number indicating test results. If the result is 000, the local Modem transmit and receive circuits have passed the test.

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Trumpcard 14400/28800 Modem

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Contents Trumpcard Data/Fax Modem User’s Guide and ReferenceCopyright How To Contact UsFTP Preface FCC Notice Regulations Governing the Use of Modems Page Vii Contents Modem Command Reference Page Introduction Features Data ModeFacsimile Mode Cellular ModeUnique Features 22bis Industry Standards32bis MNP 42bisMNP 2, 3, 27terHardware Installation Preparing for 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 Before You Begin Enabling The TrumpcardUsing AT Commands Operating the TrumpcardMaking an Outgoing Call Tone or Pulse DiallingStoring a Number Re-Dialling the Last NumberConnection Messages Data Connect 1200TX/75RXFAX CarrierSetting Up for a Non-Error Correcting Connection Ending Your ConnectionSetting up for a Cellular Connection Receiving an Incoming CallModem 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 +MSModem Command Reference Re-execute Modem Command DescriptionsAnswer ATB0 Bn Set ITU-T or Bell ModeDn Dial ATB1ATDS=2 En Command Echo Fn Select Line Modulation 14400 only+Ms Select Line Modulation 28800 only Sub-parameter DefinitionsATH0 Hn Switch-Hook ControlVFC ATH1Olume IdentificationMn Speaker Control Nn Automode Detection On Return To The On-Line StateSn Read/Write S Registers Set Pulse Dial as DefaultQn Result Code Display 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 Qn Communication Mode Mn Communication ModePn Dial Pulse Ratio disabled for the U.S Ln Line TypeRn RTS/CTS Option Sn DSR OptionTn T est and Diagnostic AT&T7 View Configuration and User ProfilesAT&T6 AT&T8Yn 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 ControlAT\K3 AT\K1AT\K5 \Nn Operation Mode Control Cn Compression 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 @Mn Initial Cellular Power Level En Compromise EqualizerInit string Event Based Command Init string = NullModem 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 PauseS11 Dtmf T one Duration S10 Lost Carrier To Hang Up DelayS9 Carrier Detect Response Time S12 Escape Code Guard TimeS25 Delay to DTR S18 Test TimerS24 Sleep Inactivity Timer S30 Inactivity TimerS33 Xoff Character S32 XON CharacterS36 Lapm Failure Control Range Default S37 Desired Telco Line SpeedS38 Delay Before Forced Disconnect S46 Protocol SelectionS48 V .42 Negotiation Action S86 Connection Failure Cause CodeS95 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