Understanding PDA & Smartphone Modem Data Rates: 24000/56 Explained

CARRIER 24000 (56)

CARRIER 26400 (57)

CARRIER 28800 (58)

CARRIER 31200 (60)

CARRIER 33600 (65)

The modem sends one of these when the indicated data rate (in bps) has been detected on the line and carrier reporting has been enabled.

COMPRESSION: V.42bis (67)

COMPRESSION: NONE (69)

One of these is sent when the modem has connected in V.42bis and COMPRESSION message reporting has been enabled.

PROTOCOL: NONE (76)

PROTOCOL: LAPM (77)

One of these is sent to the DTE when the modem has connected without any form of error correction or LAPM correction, and the PROTOCOL message reporting has been enabled.

47

Image 48

Hitachi HPW-200EC manual Compression V.42bis, Compression None

Contents

Handheld PC Hardware Users Guide Information to Users Important Safety Instructions ICES-003 StatementPage Page Page Industry Canada Terminal Equipment Statement Page Page Welcome MIC Picture from the Bottom of the Handheld PC Batteries and power Running your Handheld PC To insert the rechargeable Li-ion battery pack Operating your Handheld PC with the Main batteries To change the main battery Charging rechargeable Li-ion battery pack Operating your Handheld PC with the AC adapter Notification LED Using the stylus Pen Wireless infrared transferTo use the stylus Pen Interface cable Left Side View of Handheld PC PC card slot To insert a PC cardTo remove a PC card Using the CF card. also known as Compact Flash card To insert a CF cardTo remove a CF card To use a modem RAM/ROM Slot To change ROM board VGA Output Of Pocket PowerPoint Viewer Installation & Start-UpGeneral Description Usage ESC Using the Voice Recorder Page To use Quick Launch Key To assign application to User1 and User2 Adjusting the display contrast To use and keyTo increase display contrast To decrease display contrast Resetting your Handheld PC To perform a simple resetTo perform a full reset Precautions Hardware SpecificationsPhysical Description and Features Weight Power Peripheral and Transfer Interface PC Card Compatibility CF Card Compatibility Error Correction Compatibility SpecificationStandard Data Compression Re-execute Command AT= x Write to Selected S-RegisterAT? Read Selected S-Register Answer En Command Echo Dn DialDial Modifiers Fn Select Modulation Compatibility only Hn Disconnect and hook controlModem Identification Mn Speaker Control On Return to On-Line Data Mode Set Pulse Dialing as a defaultSn Access S-Register Set Tone Dial Default RING, no CARRIER, ERROR, no DIALTONE, Connect Rate Xn Extended Result Codes Control Summary of Supported Result Codes Zn Reset Fn Restore Default ConfigurationYn Long Space Disconnect Cn DCD Data Carrier Detect Option Mn Mode Selection Qn Mode SelectionGn Select Guard Tone Kn Flow Control Display Current Configuration Wn Store Current ConfigurationYn Selects a Default Reset Profile \Nn Selects Operating Mode 1.AT% Commands Enable/Disable Data Compression RingConnect 1200 Busy Connect 75 Connect 1200 Compression V.42bis Compression None S0 Number of Rings to Auto-Answer S1 Ring Counter S8 Pause Time For Dial Delay S2 Escape CharacterS3 Carriage Return Character S4 Line Feed Character S11 Dtmf Tone Duration S12 Escape Guard TimeS36 Lapm Failure Control S37 Desired Line Connection Speed S38 Delay Before Forced Hang Up S83 EC Negotiation timeout +FCLASS=n Select Service Class +Fcommand? Report Active Configuration+Fcommand=? Report Operating Capabilities Fax Modulation Table Value Modulation & Speed +FRS=n Receive Silence +FTM=n Transmit Data+FRM=n Receive Data +FTH=n Transmit Data with Hdlc FramingPage Page HDECLARATION of Conformity Spring,1998