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Text File | 1996-10-23 | 15KB | 332 lines

Appendix D S-Registers This appendix includes tables containing the S-Registers for cellular and non-cellular CommuniCard modems. The S-registers control how the modem responds to your phone line and computer. Generally, it is not necessary to alter register values when you are using a communication software package. The software controls the registers as you issue commands. However, direct access to the S-registers allows you to customize and control your modem for every application. Registers contain numeric values that represent a parameter, ASCII string, or the value of a counter. Some registers are bit mapped. Each of the eight bits that make up the register is assigned a function and is used for factory testing. When you display the contents of a register (for example, ATS14?), a decimal integer results as the value. S-Registers for Cellular-Ready Modems This table contains S-Registers suitable for your cellular-ready CommuniCard modem. Register Default Description 0 0 Ring to answer on 1 0 Rings currently counted 2 43 Escape character (+) (ASCII value in decimal), disabled if value is greater than 127 3 13 Carriage Return <CR> character code (ASCII value in decimal) 4 10 Line Feed <LF> character code (ASCII value in decimal) 5 08 Back Space <BS> character code (ASCII value in decimal) 6 02 Seconds to wait before blind dialing 7 50 Seconds to wait for carrier. Tenths of a second to wait for silence in '@' dial modifier 8 02 Seconds to delay for comma (,) dial modifier 9 06 Tenths of seconds to determine whether CD is true 10 14 Tenths of seconds to detect lost carrier before hang up 11 70 Duration and spacing of DTMF tones, in milliseconds 12 50 Escape sequence guard time, in 1/50 of a second. Default = 1 sec 28 Register Default Description 14 138 Read Only bit mapped register: Bit 1 Bit 2 Bit 3 Bit 4 Bit 7 command echo, En = 1 result codes, Qn = 0 verbose, Vn = 1 reserved answer (0), originate (1) mode = 1 16 00 Read Only bit mapped test register: Bit 0 Bit 2 Bit 3 Bit 4 Bit 5 Local Analog Loop, &T1 Local Digital Loop, &T3 Local modem in RDL, &T4-&T5 RDL initiated, &T6 RDL with self-test initiated, &T7 18 00 Modem test timer (seconds), for &T7, &T8 0 = test forever 19 16 AutoSync Protocol Support Mode Bit 1 Bit 2 Bit 3 Bit 4 0 = BSC, 1 = SDLC SDLC address enable NRZI, NRZ mode SDLC idle on Mark (0), or Flag (1) 20 32 AutoSync Sync/Address Character (ASCII value in decimal) 21 52 Read Only bit mapped options: RS232 control Bit 0 Bit 1 Bit 2 Bits 3, 4 Bit 5 Bit 6 Bit 7 Telco Jack, &J Status of &D4, clear buffers before hang up CTS options, &R DTR options, &D0..3 DCD options, &C DSR options, &S Long space disconnect options, Y 22 119 Read Only bit mapped options: Bit 0, 1 Bits 2, 3 Bits 4-6 Bit 7 Speaker volume options, L=2 Speaker control options, M=1 Result code options, X0..4=4 Pulse dial options, &P=0 23 Bits 4-5 Bits 6-7 Enable RDL, &T4, &T5=1 DTE baud rate = 5 0=300; 1=600; 2=1200; 3=2400; 4=4800; 5=9600; 6=19200; 7=38400 and above DTE parity=0 Guard tone options, &G=0 24 05 Sleep Inactivity Time, time to go into Low Power mode. Measured in seconds. 25 05 DTR transition detect timer (.01 seconds) 29 Register Default Description 26 01 Time delay from RTS true to CTS true (non-MNP modes). Default (.01 seconds) 27 73 Read Only bit mapped options: Bits 0,1,3 Bits 4,5 Bits 6 Bits 7 Sync, Async Mode, &Mn/&Qn=5 0,0=&M0, &Q0Async mode 1,0=&M1, &Q1-Disabled 2,0=&M2, &Q2Disabled 3,0=&M3, &Q3-Disabled 0,1=&Q4=AutoSync Mode 1,1=&Q5=Error Correction Mode 2,1=&Q6=Async normal mode Bits 2--Not used Internal clock source CCITT, Bell options, B=1 MNP10, Initial transmit level, @M=0 28 0 Bit Mapped Bits 3,4 Bits 6,7 Pulse mode, &P=0 MNP10, negotiation speed, *H=0 29 70 Flash Timer in .01 seconds, used by '!' dial modifier 30 0 Disconnect Inactivity timer, \T in minutes, 0=disable. 31 202 Bit mapped, Speed and Result control Bits 1 Bits 2,3 Bits 4,5 Bits 6,7 Automode detect, N (0=>S37) = 1 extended result code, W=2 call ID Reserved=3 32 17 XON Character used in flow control 33 19 XOFF Character used in flow control 36 7 LAPM failure control, fallback options: 0=disconnect, \N4 1=direct mode attempt, \N5,\J1 (V.32bis only) 2=reserved 3=normal mode attempt, \N5, \J0 (V.32bis only) 4=MNP only attempt, \N6 5=MNP, then direct mode attempt, \N7, \J1 (V.32bis only) 6=reserved 7=MNP, then normal mode attempt, \N7, \J0 (V.32bis only) 38 20 Delay before forced Hang up, 0...255 seconds. A value of 0=disabled, 255=Empty buffers before hangup 30 Register Default Description 39 3 Bit mapped flow control Bits 0...2 Bits 7 Flow control, &K 0=none, 3=RTS/CTS hardware flow, &K3=default 4=XON/XOFF software flow, &K4 6=XON/XOFF software flow, &K5 5=Both RTS/CTS, XON/XOFF, &K6 XON/XOFF pass through, \Xn 40 232 Bit mapped, MNP control Bits 0,1 Bits 2 Bits 3..5 Bits 6,7 MNP10, extended service, -K=1 MNP10, cellular power adjust, )M=0 Break control, see \K=5 MNP block size,\A=3 0=64 bytes; 1=128 bytes; 2=192 bytes; 3=256 bytes 41 135 Bit Mapped, Compression, Retrain Bits 0,1 Bits 2 Bits 3 Bits 4 Bits 5 Bits 6 Bits 7 Compression control, %C=3 0=None, %C0, 1=MNP5 only, %C3, 2=V.42bis only, %C2, 3=Both V.42bis, MNP5, %C1 Retrain enable, %E0-1=1 Remote flow, \G=0 stream, block link, \L=0 DTE rate change Fallback, fall forward enable, %E2=0 MNP10, allow fall back, -Q=1 46 138 V.42bis Data Compression Control, 136=Execute error correction with no compression, 138=Execute error correction with compression 48 7 V.42 Negotiation Action 0=Disable negotiation, proceed with LAPM (not recommended) 7=Enable negotiation 128=Disable negotiation, proceed with action in S36 31 Register Default Description 86 0 Disconnection Cause response (read only) 0=Normal disconnect, no error 4=Loss of carrier 5=V.42 negotiation failed a reliable connect 9=Modems could not find a common protocol 12=Normal disconnect from remote modem 13=Remote modem does not respond after 10 re- transmissions 14=Protocol violation 91 10 PSTN Transmit level, not adjustable in North American version 92 10 FAX transmit level, same as S91 95 2 Extended Result code control Bits 0 Bits 1 Bits 2 Bits 3 Bits 4 Bits 5 Bits 6 Bits 7 Force DCE instead of DTE for Connect message Append/REL to CONNECT message, \V0-1=1 Force Carrier XXXX result code Force Protocol XXXX result code Append -MNP, -LAPM to CONNECT message, \V2 Force Compression message on numeric results type; Hayes numeric results type; Rockwell 32 S-Registers for Non-Cellular Modems To read the value of a register, type ATSr? (r = the register) and <ENTER>. Example: Type ATS0? and press <ENTER>, and the modem returns the value of register S0 (the number of rings before the modem automatically answers an incoming call) to the screen. Each value is returned as a three-digit sequence representing a parameter, ASCII string, or counter value. To read values of more than one register, include them on the same command line. For example, type ATS0?S1?S2? and <ENTER> to see the values of all three registers. Setting a Register To set the value of a register, type ATSr=n (r = the register and n = value to be stored). Example: Type ATS0=2 and press <ENTER> to set register S0 (a counter) to 2. This enables the auto-answering of incoming calls, and causes the modem to answer on the second ring. Detailed S-Register Functions Most S-register default values are shown directly under each register name. The range of value settings is also given with each register. Register Default Range Description 0 0 0 to 255 rings Sets the number of rings before the modem automatically answers incoming calls. Setting this register to zero disables auto-answer mode. 1 0 0 to 255 rings Sets the number of rings required before the modem answers a call. If no rings occur over an eight second interval, this register is cleared. 2 43 0 to 255 ASCII Sets the decimal value of the ASCII character used as the escape character. A value over 127 disables the escape process, i.e., no escape character will be recognized. 3 13 0 to 127 ASCII Sets the command line and result code terminator character. Pertains to asynchronous operation only. 4 10 0 to 127 ASCII Sets the character recognized as a line feed. Pertains to asynchronous operation only. The Line Feed control character is output after the Carriage Return control character if verbose result codes are used. 33 Register Default Range Description 5 8 0 to 127 ASCII Sets the character recognized as a backspace. Pertains to asynchronous operation only. The modem will not recognize the Backspace character if it is set to a value that is greater than 32 ASCII. This character can be used to edit a command line. When the e command is enabled, the modem echoes back to the local DTE the Backspace character, an ASCII space character and a second backspace character. A total of three characters are transmitted each time the modem processes the Backspace character. 6 2 2 to 255 seconds Sets the length of time, in seconds, that the modem must wait (pause) after going offhook before dialing the first digit of the telephone number. The modem always pauses for a minimum of 2 seconds, even if the value of S6 is less than 2 seconds. The "Wait for Dial Tone" call progress feature (W dial modifier in the dial string) will override the value in register S6. This operation, however, may be affected by some ATX options according to country restrictions. 7 90 (90 for MNP 10)1 to 255 seconds Sets the time, in seconds, that the modem must wait before hanging up if carrier is not detected. The timer is started when the modem finishes dialing (originate), or goes off-hook (answer). In originate mode, the timer is reset upon detection of the answer tone (if allowed by country restrictions). This timer also specifies the wait for silence time for the @ dial modifier in seconds. S7 is not associated with the W dial modifier. 34