COURIER HST APPENDIX C ALPHABETICAL COMMAND SUMMARY Additional command summaries are on the bottom panel of the modem and in the Quick-Reference Card. Requirements 1. Type commands in either upper or lower case. 2. All commands except A/, A> and +++ are preceded by the AT prefix and are executed with the Enter/Carriage Return key (). 3. Command length = 40 characters maximum. The modem doesn't count the AT prefix, Carriage Return character, or spaces. It counts but doesn't act on punctuation such as hyphens and parentheses. 4. A missing numeric parameter is assumed to be zero, as in the command to hang up: ATH is the equivalent of ATH0 . BASIC COMMAND SET Command/Options Function & See the Extended Command Summary that follows this Basic Set. A Force Answer Mode when the modem hasn't received an incoming call. A/ Re-execute the last issued command one time. A/ doesn't take the AT prefix or a Carriage Return. A> Re-execute the last issued command continuously until canceled by pressing . Dial strings are re- executed ten times after which execution terminates. A> doesn't take the AT prefix or a Carriage Return. Terminate current dialing operation resulting from an issued Dial command; terminate Repeat mode (> or A>). AT Attention: lets the modem know commands are being issued to it. Must precede all other commands except A/, A> and +++. C-1 COURIER HST Bn U.S./CCITT answer sequence. B0 U.S. answer sequence (Default). B1 CCITT (overseas) answer sequence. Cn Transmitter enabled/disabled. C0 Transmitter disabled; receive-only condition. C1 Transmitter enabled (Default). D Dial the number that follows and enter Originate Mode. Optional parameters: P Pulse dial (Default). T Touch-Tone dial. , (Comma) Pause for 2 seconds. ; Return to Command Mode after dialing. " Dial the letters that follow. ! Transfer call (flash switch-hook). W Wait for second dial tone (with X3 or higher). @ Wait for an answer (with X3 or higher). R Reverse frequencies. DSn Dial the phone number stored in NRAM at position n (n = 0- 3). En Command Mode local echo (display) of keyboard commands ON/OFF. (DIP switch 4 is factory set to Command Mode echo ON.) E0 Local echo OFF. E1 Local echo ON. Fn Online local echo of transmitted data ON/OFF. Sometimes referred to as the Duplex setting. F0 Local echo ON. Sometimes called Half Duplex. Modem sends a copy to your screen of data it sends to the remote system. F1 Local echo OFF (Default). Sometimes called Full Duplex. Receiving system may send a remote echo of data it receives. C-2 COURIER HST Hn On/off hook control. H0 Hang up (go on hook). H1 Go off hook. In Inquiry. I0 Display product code. I1 Display results of ROM checksum. I2 Display results of RAM test. I3 Display call duration or real time (see Kn). I4 Display current modem settings. I5 Display NRAM settings. I6 Display link diagnostics. I7 Display product configuration. Kn Modem clock operation: Call-duration or Real-time Mode. K0 Return call duration at ATI3 (Default). K1 Return actual time at ATI3. Clock is set using ATI3=HH:MM:SS K1. Mn Monitor (speaker) control. M0 Speaker always OFF. M1 Speaker ON until carrier is established (Default). M2 Speaker always ON. M3 Speaker ON after last digit dialed and until carrier is established. O Return online after command execution. P Pulse dial (Default). C-3 COURIER HST Qn Quiet Mode: result codes displayed/suppressed. (DIP switch 3 is factory set to display result codes.) Q0 Result codes displayed. Q1 Result codes suppressed ("quiet"). Sr=n S-register commands: r is any S-register; n must be a decimal number between 0 and 255. Sr? Query register r. T Tone dial. Vn Return result codes in words or numbers (Verbal/Numeric Mode). (DIP switch 2 is factory set to verbal result codes.) V0 Numeric Mode. V1 Verbal Mode. Xn Result code set options. Use the following table (Default = X1, Extended set, codes 0-5, 10). RESULT CODES OPTIONS TABLE Commands X0 X1 X2 X3 X4 X5 X6 X7 Result Codes 0/OK X X X X X X X X 1/CONNECT X X X X X X X X 2/RING X X X X X X X X 3/NO CARRIER X X X X X X X X 4/ERROR X X X X X X X X 5/CONNECT 1200 X X X X X X X 6/NO DIAL TONE X X X X 7/BUSY X X X X X 8/NO ANSWER X X X X X 9/Reserved 10/CONNECT 2400 X X X X X X X 11/RINGING X X X 12/VOICE X X 13/CONNECT 9600 X X X X X X X Functions Adaptive Dialing X X X X X X Wait for 2nd Dial Tone (W) X X X X X Wait for Answer (@) X X X X X Fast Dial X X X X C-4 COURIER HST NOTE: Depending on the &A setting, the following result codes are enabled/disabled. The default is &A1, /ARQ codes enabled. 15 CONNECT 1200/ARQ 16 CONNECT 2400/ARQ 17 CONNECT 9600/ARQ Z Reset the modem to its NRAM settings; initiate new settings of DIP switches 2-5 and 9. +++ Escape code, preceded and followed by a guard time of at least one second of no data transmission. The modem responds to +++ by returning to Command Mode and doing the following: DIP Switch 9 DOWN (ON, Factory setting): Retains phone line connection Sends OK result code DIP Switch 9 UP (OFF): Hangs up Sends NO CARRIER result code > Repeat the command continuously until canceled by pressing . If used in a Dial string, automated redialing terminates after ten attempts. / (Slash) Pause 125 milliseconds. $ Help command summary request. &$ Help extended command summary request. D$ Help Dial command summary request. S$ Help S-register summary request. -S Stop/restart display of Help screens. -C or -K Cancel display of Help screens. EXTENDED COMMAND SET Command/Options Function &An Enable/disable /ARQ result codes. &A0 /ARQ result codes disabled. C-5 COURIER HST &A1 /ARQ result codes enabled (Default). &Bn Data Rate, terminal-to-modem (DTE/DCE). &B0 DTE/DCE rate follows connection rate (Default). &B1 DTE/DCE rate fixed at the DTE setting. Allowable rates are 19.2k, 9600, 7200, 4800, 2400, 1200, 300 bps. &F Load factory (ROM) settings into random access memory (RAM). &Gn Guard tone as part of answer sequence. &G0 No guard tone, U.S., Canada (Default). &G1 Reserved. &G2 Guard tone, U.K., some Commonwealth countries. &Hn Transmit Data flow control. &H0 Flow control disabled (Default). &H1 Hardware (CTS) flow control. &H2 Software (XON/XOFF) flow control. &H3 Hardware and software control. &In Received Data software flow control. &I0 Flow control disabled (Default). &I1 XON/XOFF to local modem and remote computer. &I2 XON/XOFF to local modem only. &I3 Host Mode, Hewlett Packard protocol. &I4 Terminal Mode, Hewlett Packard protocol. &I5 XON/XOFF to remote modem for non-ARQ link flow control. &Kn Data compression enabled/disabled. &K0 Disabled. &K1 Auto enable/disable (Default). Disabled if &B and &N rate settings are equal. &K2 Enabled regardless of &B and &N settings. C-6 COURIER HST &Mn Normal or Error Control Modes. &M0 Normal Mode. &M1 Reserved. &M2 Reserved. &M3 Reserved. &M4 Normal/ARQ Mode -- Normal if ARQ connection cannot be made (Default). &M5 ARQ Mode -- hang up if ARQ connection cannot be made. &Nn Link Data Rate (DCE/DCE) variable or fixed. With fixed link rate, modem hangs up if called or calling modem is operating at a different rate. &N0 Variable link operations; negotiate highest possible link rate with remote modem (Default). &N1 300 bps. &N2 1200 bps. &N3 2400 bps. &N4 4800 bps. &N5 7200 bps. &N6 9600 bps. &Pn Pulse dialing make/break ratio. &P0 U.S./Canada make/break ratio (Default). &P1 U.K./some Commonwealth countries make/break ratio. &Rn Received Data hardware (RTS) flow control. &R0 Reserved. &R1 Ignore RTS (Default). &R2 Received data output to terminal on RTS high; used only if terminal supports RTS. &Sn Data Set Ready (DSR) operations. C-7 COURIER HST &S0 DSR override, always ON (Default). &S1 Modem controls DSR. &W Write current settings to nonvolatile random access memory (NRAM). C-8 COURIER HST &Yn Break handling. Destructive Breaks clear the buffer; expedited Breaks are sent immediately to the remote system. Under data compression, destructive Breaks reset the local and remote modem's compression tables. &Y0 Destructive, don't send Break. &Y1 Destructive, expedited (Default). &Y2 Nondestructive, expedited. &Y3 Nondestructive, unexpedited; modem sends Break in sequence with data received from terminal equipment. &Zn=s Write the following Dial string (s) to NRAM at position n (n=0-3). &Zn? Display the phone number stored in NRAM at position n. C-9