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MaxTech 28 - page 1
User's Manual Contents Section One Introduction ............................ 1 Section Two Installation .............................. 1 Section Three AT Command Set ................... 6 Section Four S Register Summary ............ 11 Section Five Result Codes .......................... 12 Section Six Troubleshooting .................... 15 S ...
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MaxTech 28 - page 2
1 Section One - Introduction The 28.8 Kbps Series FAX/Data Modem products connect your computer to all popular high speed modems available today. The modem supports the V.34 protocol to supply the highest speed connections possible. It also uses V.42 or MNP 2-4 error correction for flawless connections and V.42bis or MNP 5 data compression for incr ...
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MaxTech 28 - page 3
2 set to COM1 on IRQ4. Reconfigure the modem to either COM3/IRQ5 or COM4/IRQ2 (refer to Table 2-1 in Sec- tion 2.4). 4. Remove your computer's cover (refer to your computer's owner manual). 5. Select any available half-card slot, and then remove the slot cover (refer to Figure 2-2). 6. Carefully slide the internal mo- dem into the slot yo ...
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MaxTech 28 - page 4
3 Panel, double-click on Ports . Click once on the icon for the Com port you have set your modem to. Click the Settings button. Click the Advanced button. The Base I/O Port Address should already be set by Windows to the COM port address used by the modem (refer to Table 2-1). Change the Interrupt Request Line (IRQ) to match the IRQ on the modem. I ...
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MaxTech 28 - page 5
4 An IRQ (interrupt request) is a signal generated by an I/O device that notifies the computer of incoming data. Your internal modem is capable of accessing IRQs 2, 3, 4, and 5. I/O devices in your computer cannot share an IRQ with another device at the same time. Since IRQs can not be shared at the same time, COM 3 is generally configured to use I ...
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MaxTech 28 - page 6
5 2. 5 Using the Fax Capabilities of the Modem Your modem has built-in advanced FAX functions. The commands to control these functions are software driven and are not normally accessible to the user. Consult your FAX software manual about procedures on using FAX features. 2. 6 Testing Your Modem After Installation In order to test your modem you sh ...
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MaxTech 28 - page 7
6 commonly asked questions and problems. Section Three - AT Command Set 3. 1 Executing Commands Commands are accepted by the modem while it is in Command Mode. Your modem is automatically in Com- mand Mode until you dial a number and establish a connec- tion. Commands may be sent to your modem from a PC running communication software or any other t ...
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MaxTech 28 - page 8
7 B6 2400 bps connection only B7 4800 bps connection only B8 9600 bps connection only B9 14400 bps connection only B10 16800 bps connection only B11 19200 bps connection only B12 21600 bps connection only B13 24000 bps connection only B14 26400 bps connection only B15 28800 bps connection only D _ 0 - 9, A-D, # and * L last number redial P pulse di ...
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MaxTech 28 - page 9
8 O1 Return to Data Mode and initiate an equalizer retrain O2 Same as O1 with speed fall forward O3 Same as O1 with speed fall backward P Set Pulse dial as default Q0 Modem sends responses Q1 Modem does not send responses Sr? Read and display value in register r. Sr=n Set register r to value n (n = 0-255). T Set Tone Dial as default V0 Numeric resp ...
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MaxTech 28 - page 10
9 with &D0) &F 4 Same as &F2 except for Macintosh computers (&F2 with &D0) &F 5 Same as &F except V.42bis and flow control are disabled &G 0 Guard tone disabled &G1 550 Hz guard tone &G2 1800 Hz guard tone &H Display help screen &L0 Modem is set up for dial-up line operation &L1 Modem is set up fo ...
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MaxTech 28 - page 11
10 %L n Set transmit level to - n dBm Default = 12. (n =0-15) %M 0 Autodetect V.34 and V.FC negotiation signals %M1 Autodetect V.34 negotiation signals only %M2 Autodetect V.FC negotiation signals only %P0 Disable Power-on Auto-connect %P1 Enable Power-on Auto-connect %S0 Disable Call-back Security %S1 Enable Call-back Security with password check ...
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MaxTech 28 - page 12
11 Kn Set break control (n= 0-5). Default is 5 N0 Normal data-link only N1 Direct data-link only N2 MNP data link only N3 MNP or Normal data link N4 V.42 data link only N5 V.42 or MNP data link only N6 V.42/MNP/Normal data link O Initiate reliable link during a normal link Q0 Turn off flow control Q1 XON/XOFF software flow control Q2 ...
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MaxTech 28 - page 13
12 Table 4-1 S - Registers Register Function Range/units Default S0 Auto-answer Ring 0-255/rings 0 S1 Ring counter 0-255/rings 0 S2 Escape code character 0-127/ASCII 43 S3 Carriage return character 0-127/ASCII 13 S4 Line feed character 0-127/ASCII 1 0 S5 Backspace character 0-32, 127/ASCII 8 S6 Dial tone wait time 2-255 /seconds 2 S7 Remote carrier ...
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MaxTech 28 - page 14
13 CONNECT 9600 13 CONNECT 12000 14 CONNECT 14400 15 CONNECT 16800 60 CONNECT 19200 61 CONNECT 21600 62 CONNECT 24000 63 CONNECT 26400 64 CONNECT 28800 65 CONNECT 38400 66 CONNECT 57600 67 CONNECT 115200 6 8 CONNECT 1200/75 4 8 CONNECT 75/1200 4 9 EXTENDED RESPONSE CODES CONNECT 300/MNP 16 CONNECT 1200/MNP 17 CONNECT 2400/MNP 18 CONNECT 4800/MNP 19 ...
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MaxTech 28 - page 15
14 CONNECT 300/V42 32 CONNECT 1200/V42 33 CONNECT 2400/V42 34 CONNECT 4800/V42 35 CONNECT 7200/V42 36 CONNECT 9600/V42 37 CONNECT 12000/V42 38 CONNECT 14400/V42 39 CONNECT 16800/V42 90 CONNECT 19200/V42 91 CONNECT 21600/V42 92 CONNECT 24000/V42 93 CONNECT 26400/V42 94 CONNECT 28800/V42 95 CONNECT 38400/V42 96 CONNECT 57600/V42 97 CONNECT 115200/V42 ...
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MaxTech 28 - page 16
15 Section Six - Troubleshooting This section describes some of the common problems you may encounter while using your modem. If you can not resolve your difficulty after reading this chapter, contact your dealer or vendor for assistance. Modem does not respond to commands. 1. Make sure the modem is not configured with a conflicting COM port and IR ...
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MaxTech 28 - page 17
16 sounds noisy, you may have difficulty connecting to the remote device. Modem makes a connection but no data appears on your screen. 1. The remote system may be waiting to receive your data before it begins. Try pressing the ENTER key a few times. 2. Make sure the correct data format (data bits, stop bits, and parity bits) and flow control (RTS/C ...
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MaxTech 28 - page 18
17 Section Seven - Specifications Communication Std. V.34, V.FC, V.32bis, V.32, V.29, V.27ter, V.22bis, V.23, V.22, V.21, V.17, Bell212/ 103 Data Compression: V.42bis/MNP5 Error Correction: V.42/MNP2-4 Host Interface: 8 bit PC bus COM ports: 1, 2, 3, 4 IRQ lines: 2, 3, 4, 5 FAX Group: Group III Send/Receive Standard FAX Command set: EIA/TIA-578 Ser ...
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MaxTech 28 - page 19
18 operation of your equipment. If they do, you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service. The FCC prohibits this equipment to be connected to party lines or coin-telephone service. In the event that this equipment should fail to operate properly, disconnect the equipment from the phone line ...
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MaxTech 28 - page 20
19 Before installing this equipment, users ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an accept- able method of connection. The customer should be aware that compliance with the above conditions may not prevent degrada- tion of service in some s ...
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