3Com 1.024.1644-00 Fn Loads a read-only non-programmable factory configuration, Sets Guard Tone

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Technical Reference

&Dn Controls Data Terminal Ready (DTR) operations

&D0	DTR override
&D1	DTR toggle causes online Command mode
&D2	Normal DTR operations
&D3	Resets on receipt of DTR

&Fn Loads a read-only (non-programmable) factory configuration

&F0	Generic template
&F1	Hardware flow control template
&F2	Software flow control template
&Gn Sets Guard Tone
&G0	No guard tone, U.S. and Canada
&G1	550 Hz guard tone, some European countries, requires
	B0 setting
&G2	1800 Hz guard tone, U.K., requires B0 setting

&Hn Sets Transmit Data (TD) flow control (see also &Rn)

&H0	Flow control disabled
&H1	Hardware flow control, Clear to Send (CTS)
&H2	Software flow control, XON/XOFF
&H3	Hardware and software flow control

&In Sets Receive Data (RD) software flow control (see also &Rn)

&I0	Software flow control disabled
&I1	XON/XOFF signals to your modem and remote system
&I2	XON/XOFF signals to your modem only

&Kn Enables/disables data compression

&K0	Data compression disabled
&K1	Auto enable/disable
&K2	Data compression enabled
&K3	MNP5 compression disabled

&Mn Sets Error Control (ARQ) for connections at 1200 bps and

higher
&M0	Normal mode, error control disabled
&M1	Reserved
&M2	Reserved
&M3	Reserved
&M4	Normal/ARQ
&M5	ARQ mode

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Contents 56K Voice Faxmodem Internal Page Table of Contents Page Table of Contents Page Welcome to 56K*Information Access Product Features Back Channel Link Rates Upload Speeds Flash ROM Upgradable Control Panel Determining Available ResourcesWindows 95 version Determining Your Version of WindowsClick Properties How to Prepare for Plug and Play Installation Plug and Play InstallationSerial Number How to Insert the Modem into the ComputerPage Page Page Page Moving Through the New Hardware Found Screens Installing Modem Drivers With Windows Versions 950 and 950aPage COM Port Click More Info… Using the Update Device Driver Wizard Screens Installing Modem Drivers With Windows Version 950bPage COM Port Click More Info… Word about COM Ports and IRQs How to Change the Modem’s Settings Page How to Insert the Modem into the Computer Page Page Page Page Restart Now Windows Software InstallationFlow Control Type of ModemInitialisation String Read This First Possible SolutionTroubleshooting Possible Solution Possible Solution Possible Solution Troubleshooting Possible Solution Support Resources Support Resources Are You Still Having Problems?Answer mode Analogue signalsAnalogue loopback ApplicationGlossary Baud rate Glossary Auto dialBinary digit bit Bit rateGlossary Character Data modeCharacters per second CPS Class 1Detect phase DefaultDigital signals GlossaryFax mode Glossary Error controlFacsimile Flow controlModem Local echoNonvolatile memory Nvram OFF/ON hookGlossary Online fallback/fall forward Originate modeParity ProtocolSerial transmission Terminal modeStart/stop bits Terminal27ter 22 bis32 bis See online fall back/fall forwardXmodem 42 bisYmodem Ymodem GTechnical Reference ITU-T answer sequence Technical ReferenceDials the specified phone number, includes the following En Sets local echoTechnical Reference Hn Controls ON/OFF hook Ln Controls speaker volume internals onlyDisplays the following information Mn Operates speakerVerbal codes Numeric codes 11/RINGING Technical Reference Sets result code displayed, default isTechnical Reference Displays a list of ampersand & commands Resets modemAn Enables/disables additional result code subsets see Xn Cn Controls Carrier Detect CD signalKn Enables/disables data compression Fn Loads a read-only non-programmable factory configurationSets Guard Tone Hn Sets Transmit Data TD flow control see also &Rn300 bps Sets pulse rotary dial make/break ratio No restrictions on the minimum speed for Yn Sets break handling Wn Writes current configuration to Nvram templates64 56K Voice Faxmodem Internal User’s Guide Registers Register Default FunctionBit Value Result Default FunctionS13 Technical Reference Register Default FunctionTimer S27 See the instructions for S13 S34 Bit +FCLASS=n Sets the mode of operation Fax CommandsDisplayed As a number Words Description +FTH=n+FRH=n CE Compliance RegulatoryLimited Warranty