__ __ _ ________ ___ | | | | HHHHHHH HHH | | | | | HHH HHH HHH sss | | | | | HHH HHH sssss HHHsss sssss HHH """ sssss sssss | | | | |__HHH_HHH HHH HHH HHH HHH HHH HHH HHHHH HHH HHH HHH HHH HHH | | | |\_ \HHHHHH" HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH | | | | | HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH "HHsss | | | | | HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH sss HHH | `-' | | HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH HHH ------- """ """ """""" """""" """"" """ """ """"" """"" HH HH HHHHHH HHHHHH HHHHHH HHHHHHH HH HHHHHH HH HH HH HH HHH HHH HH HHHHHH HH HH HHHHHHH HH HH HHH HH HH HH HH H H HH HH HH HH HH HH HH HH HH HH HHHH HH HH HH HH H HH HH HH HH HH HH HH HH HH HH HH HH HH HH HH HH HH HH HHHHHHH HH HH HH HH HH HH HH HHHH HH HH HH HH HHHHHH HH HH HH HH HH HH HH HHHH HH HH HH HH HH HH HH HH HH HH HH HHHH HH HH HH HH HH HH HH HH HH HH HH HH HH HH HHH HH HH HH HH HH HHHHHH HH HH HHHHHHH HH HH HH HH HH HH HH HH HHHHHH HHHHHH HH H HHHHHHH HHHHHHH HHHHHH HH H HH HH HHHHHHH HH HHHHHHHH HHHHHHHH HH HHH HHHH HHHHHHHHHH HHHHHHHHHH HH HHH HH HH HHH HHH HHH HHH HHH HH HH HHH HHH HHH HHH HHH HH HH HHH HHH HHH HHH HHH HH HHH HHH HHH HHH HHH HHH HHHHHHHHHH HHH HHH HHH HHH HHHH HHH HHH HHHHHHHHHH HHHHHHHHHH HHHHHHHHHHH HHHHH HHHHHHHH HHHHHHHH The USRobotics MicroLink 2400 modem is the new choice for today's sophisticated data communicators who demand the highest standards of quality and reliability from their equipment. The $599.00 MicroLink 2400 offers a combination of price, performance, quality, and reliability that other internal 2400/1200/300 bps modems can't match. The MicroLink 2400 is a fully-featured plug-in modem designed for IBM PCs and compatibles (it can be used in COM1, COM2, COM3, or COM4). The modem has special features that professional users will find ingenious and indispensable. Standard features found on the MicroLink 2400 include: * CALL DURATION REPORTING: The MicroLink 2400 records the duration of your calls in hours, minutes, and seconds. This feature enables you to display and print an audit of your calling activities. You can optionally use the modem clock as a real-time clock. * CALL PROGRESS DETECTION: The MicroLink 2400 has additional call- progress result codes (screen messages) that let you know when a line is busy, a person rather than a modem has answered the phone, there is no dial tone, or the distant phone is ringing. * MODEM SETTINGS DISPLAY: On command, the modem sends a display of its current settings, a handy way to check your transmission rate, S-registers, and other operational controls. * HELP SCREENS: You can also display screens that summarize the command set, S-register functions, and Dial command options. * REPEAT COMMAND: You can have the modem continuously repeat a command until instructed otherwise. This is especially usefule in dialing services whose lines are often busy. * QUOTE MODE: You can put the modem in Quote Mode * ADAPTIVE DIALING: You can set the MicroLink 2400 so that it auto- matically uses touch-tone dialing. If tone dialing doesn't work on the line, the modem automatically switches to the slower type, pulse (rotary). * DATA RATE FALLBACK: In addition to automatically adjusting to the bit rate of incoming calls (0-300, 1200, 2400 bits per second, or bps), the MicroLink 2400 incorporates the V.22bis fallback recommendation when dialing. If the called modem operates at 1200 bps, the MicroLink 2400 automatically drops back to 1200 bps. * AUTOMATIC RETRAINING: The MicroLink 2400 observes the V.22bis retrain sequence, which enables modems communicating at 2400 bps to compensate for certain problems that may affect data reliability. _____________________________________________________________________________ STANDARDS COMPLIANCE ______________________________________________________________________________ Bell 103/113 at 300 bps Bell 212A at 1200 bps CCITT V.22bis at 2400 bps Ringer Equivalence: 0.4B FCC Part 15#: CJE794Microlink24 Canadian DOC LN#: 36B FCC Part 68#: CJE794-11323-DM-E ______________________________________________________________________________ AT COMMANDS SUPPORTED ______________________________________________________________________________ COMMAND DEFAULT FUNCTION A DNA Forces Answer Mode A/ DNA Reexecute last command (does not require "AT" or Any Key DNA Terminate current dialing operation resulting from issued dial command AT DNA Attention. MUST precede all commands except A/ and +++. Cn C1 Set additional modem to Receive-Only C0 Transmitter disabled C1 Transmitter enabled D Pulse Dial the number that follows and enter Dial originate mode; use with any of these options: P Pulse (rotary) dial (0-9) -- DEFAULT T Touch-tone dial (0-9, #, *) , (Comma) Pause two seconds, then continue ; (Semi-colon) Return to command mode after dialing R Reverse Originate and Answer Frequencies " Dial the letters that follow ! Transfer call (flash the switchhook) W Wait for second dial tone (with X3 or higher) @ Wait for answer (with X3 or higher) E E0 Command mode local echo ON/OFF E0 Echo OFF E1 Echo ON F F1 Online local echo ON/OFF F0 Echo ON F1 Echo OFF Hn H0 ON/OFF hook control H0 Hang up (go on hook) H1 Go off hook In DNA Inquiry I0 Display product code I1 Display memory (ROM) checksum I2 Run Memory (RAM) test I3 Return call duration or real time (see Kn) I4 Return current modem settings Kn K0 Modem clock operation : call duration or real time K0 Return call duration at ATI3 K1 Return actual time at ATI#. Clock is set using ATI3=HH:MM:SS K1 Mn M1 Audio Monitor (speaker) control M0 Speaker always OFF M1 Speaker ON until "CONNECT" M2 Speaker always ON M3 Speaker ON after last digit dialed and until carrier is established. O DNA Toggle back online after command execution P Pulse Pulse (rotary) Dial Qn Q0 Enable/Suppress result codes Q0 Result codes displayed Q1 Result Codes suppressed Sr=n DNA Sets S-Register r to value n where n is a decimal number from 0 to 255 Sr? DNA Query value of register r T Pulse Touch-tone dial Vn V1 Verbal/numeric result codes V0 Numeric result codes V1 Verbal result codes Xn X1 Result code set X0 Basic 0-4 X1 Extended 0-5 X2 Advanced (full) set plus fast dialing (immediately on dial-tone detect) and repeat dialing up to ten times RESULT CODES / SPECIAL DIALING FUNCTIONS OPTIONS TABLE RESULT CODES X0 X1 X2 X3 X4 ³ X5 ³ X6 | 0/OK X X X X X X X 1/CONNECT X X X X X X X 2/RING X X X X X X X 3/NO CARRIER X X X X X X X 4/ERROR X X X X X X X 5/CONNECT 1200 X X X X X X 6/NO DIAL TONE X X X 7/BUSY X X X X 8/NO ANSWER (requires @, replaces 3/NO CARRIER) X X X X 10/CONNECT 2400 X X X X X X 11/RINGING X X 12/VOICE X X SPECIAL DIALING FUNCTIONS Adaptive Dialing X X X X X Wait for 2nd Dial Tone (W) X X X X Wait for Answer X X X X Fast Dial X X X Z DNA Reset modem to factory defaults. +++ DNA Disconnect or return to command mode. Must be preceded and followed by at least one second of no data entry/transmission; does not take AT or . > DNA Repeat command string until canceled by pressing any key. If used in Dial String, automated redial terminates after ten attempts. $ DNA Help command summary request. D$ DNA Help Dial command summary request. S$ DNA Help S-register summary request. C DNA Cancel display of Help screens. K DNA Cancel display of Help screens. S DNA Stop/restart display of Help screen. ______________________________________________________________________________ THE RESULT CODES ______________________________________________________________________________ NUMERIC/VERBAL CODE MEANING 0/OK Command has been executed. 1/CONNECT Connection successfully made; if X1 or X2 is set, connection is at 300 bps. 2/RING Incoming call when modem set to Auto Answer. 3/NO CARRIER Hung up because attempt to connect failed or call was disconnected. 4/ERROR Invalid command. 5/CONNECT 1200 Connection successfully made at 1200 bps. 6/NO DIAL TONE Hanging up; no dial tone. 7/BUSY Hanging up; busy signal. 11/RINGING Dialed and remote phone is ringing. 12/VOICE Hanging up; voice answered. ______________________________________________________________________________ S-REGISTERS SUPPORTED ______________________________________________________________________________ REGISTER DEFAULT FUNCTION S0 S0=0 Sets the number of rings on which to answer when or DIP #5 in Auto Answer Mode S1 S1=0 Counts and stores the number of rings from S2 S2=43 Sets the ASCII decimal code for the escape code character. Default character is "+". A value of 128-255 disables the escape code. S3 S3=13 Sets the ASCII decimal code for the Carriage Return character S4 S4=10 Sets the ASCII decimal code for the Line Feed character S5 S5=8 Sets the ASCII decimal code for the Backspace character. A value of 128-255 disables the backspace key's delete function. S6 S6=2 Sets the number of seconds the modem waits before dialing. If set below two, the modem resets S6 to 2, due to phone company limitations. If the modem is set to X2, the modem ignores S6 and dials as soon as it detects a dial tone (fast dial) S7 S7=30 Sets the number of seconds the modem waits for a carrier. May be set for much longer duration if, for example, the modem is originating an international connection. S8 S8=2 Sets the duration , in seconds, for the pause (,) option in the Dial command S9 S9=6 Sets the required duration of the remote modem's carrier signal, in tenths of a second, before recognition (Carrier Detect Time) S10 S10=7 Sets the duration, in tenths of a second, the modem waits after loss of carrier before hanging up. While we don't recommend use of call waiting on data lines, if you use call waiting you may want to set this register higher to prevent the modem from interpreting a signal for a second call as a disconnect from the remote modem. S11 S11=70 Sets the duration and spacing, in milliseconds, of dialed Touch-Tones. S12 S12=50 Sets the duration, in fiftieths of a second, of the guard time for the escape code sequence. Must be value between 1 and 255. S14 S14=24n Sets the modem product code returned with ATI0. Reset to 120 for use with Smartcom 2.0 (not affected by ATZ) S16 S16=0 Modem self-test. Set to 0 for Data Mode; set to 1 for Analog Loopback Test S16 = 0 Data Mode (no testing) = 1 Analog Loopback = 2 Dial Test = 4 Test Pattern = 5 Analog Loopback with Test Pattern ______________________________________________________________________________ DIP SWITCHES ______________________________________________________________________________ SWITCH FUNCTION 1 DTR Override 2 Verbal/Numeric Result Codes 3 Display/Suppress Result Codes 4 Command Mode Local Echo 5 Auto Answer enable/disable 6 Carrier Detect Override 7 Single/multiple phone installation 8 "AT" command set recognition/Dumb mode 9 Escape Code (+++) Operations / 10/11 bits per character 10 Volume control (low/high) NOTE: All switches are easily accessible through the rear mounting plate. ______________________________________________________________________________ DIAGNOSTICS ______________________________________________________________________________ Diagnostics Analog Loopback Self-Test Test Pattern Generation _____________________________________________________________________________