Manuale d’uso / di manutenzione del prodotto MT2834BLR del fabbricante Multitech
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MT2834BR/MT2834BLR Intelligent Data/Fax Rack Mounted Modem User Guide.
MT2834BR/MT2834BLR User Guide PN: S000316 Copyright ©2003 by Multi-Tech Systems, Inc. All rights reserved. This publication may not be reproduced, in whole or in part, without prior written permission from Multi-Tech Systems, Inc. Multi-Tech Systems, Inc.
Contents Chapter 1 - Introduction ................................................................ 5 1.1 Introduction .............................................................................. 6 1.2 Features .......................................
4.2 S-Registers ............................................................................. 4 8 4.3 Result Codes .......................................................................... 5 2 4.3.1 AT Commands and S-Register Summary ................
Chapter 1 - Introduction.
6 Chapter 1 - Introduction 1.1 Introduction Welcome to the world of data communications. You have acquired one of the finest intelligent data/fax modems available today, either the model MT2834BR or MT2834BLR (MT2834), from Multi-Tech Systems. Your MT2834 modem provides data communication at 33,600-14,400 bps (*Enhanced V.
· Automatic disabling of compression when transferring already- compressed files. · Serial port data rates adjustable to 115.2K bps. · Autodial, redial, pulse (rotary) and touch-tone dial. · Dial tone and busy signal detection for reliable call-progress detection.
Chapter 2 - Inst allation.
9 Chapter 2 - Installation 2.1 Preliminaries This chapter covers MT2834 installation and connection. In addition to the contents of the MT2834 package, you will need the equipment listed below. 2.1.1 Card Cage The MT2834 is designed to mount in the Multi-Tech Systems' modem rack (see Section 2.
10 Chapter 2 - Installation 2.2 Installation Perform the following procedure to install modem cards in the CC916, CC1416, CC2816 or CC1600 racks*. The installation process involves: 1. Power cord must be unplugged prior to installation of the Power Source(s).
11 Chapter 2 - Installation 9. Set both local and remote modems to either Normal ( &E0&W0 ) mode or to Reliable ( &E2&W0 ) mode. 10. Verify leased line transmit level (DIP-Switch #3) setting (Section 2.3.1). 11. Proceed to Chapter 3 of this manual, or to your data communications software manual.
12 Chapter 2 - Installation The sixteen DIP-Switches and two berg jumpers control various modem options or set default values for the MT2834 Command mode. There is a difference in how several of the switches operate depending on whether you are in synchronous or asynchronous mode (DIP-Switch #12).
13 Chapter 2 - Installation Switch Function Position Effect #5 Answer/Originate* UP* Originate call in (Async/Sync/Leased Line) DOWN Lease Line mode #6 Max-Throughput Enabled* UP* Modem set-up to (Asy.
14 Chapter 2 - Installation Dip Switch Settings #13 - 16 Note: A modem baud rate command (e.g., $MB33600 ) overrides the setting of the speed selection switches (#13 and #14). Switch Position Effect 13/14 UP/UP* 28.8 K bps Operation (Default) 13/14 DOWN/UP 19.
15 Chapter 2 - Installation 2.4.1 Out of Service/Test Jumper When the MT2834 is Out Of Service ( OOS ), it is busy to incoming calls. In the Test (default) setting, the modem drives pin 25 high when the modem is in Test mode. In the OOS (optional) setting, the computer or terminal forces pin 25 high and puts the modem in a busy condition.
16 Chapter 2 - Installation 2.5 Dial-Up and Leased Lines Connection to the phone system is made via RJ11 type jacks such as an RJ11C or RJ11W. It can also be connected to an RJ41 or an RJ45S jack, but would not use these jack's dB-level programming features.
17 Chapter 2 - Installation 2.6 Modem LED Indicators The MT2834 has ten LED diagnostic indicators. 1. Receive Data ( RCV ). This LED blinks when data is being received, on for a space, off for a mark. The state of this RCV LED matches that of the RCV circuit on Pin 3 of the RS232C/V.
18 Chapter 2 - Installation 10. Error ( ERR ). When the ERR LED is flashing, the leased line is down and the modem is in self-test mode has failed. When ERR LED is on, this indicates the modem is in an out of service ( OOS ) state. When the modem is out of service, it is busy to incoming calls.
Chapter 3 - Inst allation.
20 Chapter 3 - Configuration 3.1 Introduction Since your communications software configuration is affected by the capabilities of your computer, this chapter begins with a discussion of the limitations of some serial ports and how to identify them.
21 Chapter 3 - Configuration compromised by other serial communications, including printer transmissions and Appletalk, the networking software that allows Macintoshes to share files. When Appletalk is active it controls all serial communications on the Macintosh.
22 Chapter 3 - Configuration Figure 3-1. MSD UART Identification, Screen 1 Figure 3-2. MSD UART Identification, Screen 2.
23 Chapter 3 - Configuration 3.3 Configuring Your Software Communications software must be configured to work with your modem, your computer, and the remote system it is calling.
24 Chapter 3 - Configuration 3.4 PC Initialization Strings We recommend the following initialization string for a MT2834 connected to a PC-compatible computer: AT &F X4 S0=0 ^M This string resets the MT2834 to the factory default settings, selects extended result codes with NO DIAL TONE and BUSY, and turns off auto- answer.
25 Chapter 3 - Configuration Figure 3-2. The MEW Modem Initialization Setup * Note that the above and following set up screens are examples found in MultiExpress for Windows ( MEW ), and that other 3rd party data communication software is similar but different.
26 Chapter 3 - Configuration 3.4.1 Changing Default Parameters The default values for the other parameters in modem configuration menus rarely need changing.
27 Chapter 3 - Configuration 3.6 Configuring Software for Your Computer Configure the communications software to match the computer’s configuration. If the MT2834 is connected to the COM2 serial port, select "COM2" under the Device drop-down menu.
28 Chapter 3 - Configuration 3.6.1 Configuring Software for the Remote System You must meet the requirements of the remote system for successful communications.
29 Chapter 3 - Configuration 3.6.3 File Transfer Protocols When you upload or download files with your modem, the host computer will ask which file transfer protocol you want to use. Most communications programs allow you to choose a default protocol.
30 Chapter 3 - Configuration The command to disable compression is AT &E14 <CR> . If you have an older UART or if you use your modem mostly for downloading long, compressed files from BBSs, .
Chapter 4 - Modem Commands.
32 Chapter 4 - Commands 4.1 Modem AT Commands AT commands are the means by which you, and your communications software, are able to communicate with and configure your modem. They enable you to establish, read, and modify parameters in addition to dialing.
33 Chapter 4 - Commands COMMAND: $An VALUES: n = 0 or 1 DEFAULT: $A0 DESCRIPTION: $A0 discards data during auto-reliable time period. $A1 buffers data during auto-reliable time period.
34 Chapter 4 - Commands VALUES: n = 0, 1, 2 or 4 DEFAULT: &C1 DESCRIPTION: &C0 forces Carrier Detect on. &C1 lets Carrier Detect act normally. &C2 lets Carrier Detect drop S24 time on disconnect. &C4 resets modem when Carrier Detect drops.
35 Chapter 4 - Commands VALUES: n = 0 or 1 DEFAULT: %DP0 DESCRIPTION: %DP0 selects do not read Line Probe Information from DSP during handshaking. %DP1 selects read Line Probe Information from DSP during handshaking. COMMAND: En VALUES: n = 0 or 1 DEFAULT: E1 DESCRIPTION: E0 selects do not echo Command mode characters.
36 Chapter 4 - Commands VALUES: n = 0 thru 2 DEFAULT: #F2 DESCRIPTION: #F0 means no fallback when on-line. #F1 means fallback from 33600 to 4800 bps when on-line (increments of 2400 bps). #F2 means fallback to 4800 bps from 33.6K bps/fall forward if line improves (increments of 2400 bps).
37 Chapter 4 - Commands VALUES: n = 1 thru 3 DEFAULT: Read Only Command DESCRIPTION: $H1 brings up Help Screen #1. $H2 brings up Help Screen #2. $H3 brings up Help Screen #3. COMMAND: In VALUES: n = 0,1or 2 DEFAULT: Read Only Command DESCRIPTION I0 requests modem ID #.
38 Chapter 4 - Commands VALUES: n = speed DEFAULT: $MB33600 bps DESCRIPTION: $MB75 selects CCITT V.23 mode. $MB300 selects 300 bps on-line. $MB1200 selects 1200 bps on-line. $MB2400 selects 2400 bps on-line. $MB4800 selects 4800 bps on-line. $MB9600 selects 9600 bps on-line.
39 Chapter 4 - Commands VALUES: n = 0, 1 or 2 DEFAULT: Q0 DESCRIPTION: Q0 selects Result Codes displayed. Q1 selects Result Codes suppressed (quiet). Q2 selects Dumb Answer Mode. COMMAND: &Qn VALUES: n = 0 or 1 DEFAULT: &Q0 DESCRIPTION: &Q0 selects Multi-Tech command set.
40 Chapter 4 - Commands VALUES: r = 0-11, 13, 15-17, 24-26, 29, 30, 32, 34, 36, 37, 48 DEFAULT: n/a DESCRIPTION: Reads value of S-Register “r” and displays value in 3- digit decimal format. COMMAND: $SBn VALUES: n = speed DEFAULT: $SB115200 bps DESCRIPTION: $SB300 selects 300 bps at serial port.
41 Chapter 4 - Commands VALUES: n = 4 or 5 DEFAULT: &T5 DESCRIPTION: &T4 selects Enable Response to Request for Remote Digital Loopback. &T5 selects Disable Response to Request for Remote Digital Loopback.
42 Chapter 4 - Commands DEFAULT: X0 DESCRIPTION: X0 selects Basic Result Codes (w/o CONNECT 1200, CONNECT 2400). X1 selects Extended Result Codes (w/CONNECT 1200, CONNECT 2400). X2 selects Standard AT Command set with NO DIAL TONE. X3 selects Standard AT Command set with BUSY.
43 Chapter 4 - Commands DEFAULT: n/a DESCRIPTION: Causes modem to wait for ringback, then 5 seconds of silence before processing next part of command. COMMAND: +++AT<CR> VALUES: n/a DEFAULT: n/a DESCRIPTION: In-band Escape Sequence. Places modem in Command mode while still remaining On-Line.
44 Chapter 4 - Commands DEFAULT: n/a DESCRIPTION: Callback password with xxxxxx being callback password and yy being the memory location. Callback password xxxxxx must start with a non-numeric character and upper/ lower case sensitive. Callback password xxxxxx must be a mini mum of 6 and maximum of 10 characters.
45 Chapter 4 - Commands 4.1.2 Remote Configuration The Remote Configuration feature is a network management tool that allows you to configure modems remotely. This means you could configure modems anywhere in your network from one location without having to visit the sites or rely on remote users to follow your instructions.
46 Chapter 4 - Commands You can now use any AT commands of the modem being remotely configured as if they were being entered locally. You cannot change the Set-up of the LOGIN Password until you enter the proper LOGIN Password. 4. When you are done entering AT commands and you want to exit, type AT0 and hit RETURN .
47 Chapter 4 - Commands COMMAND: CSPs VALUES: n/a DEFAULT: n/a DESCRIPTION: The CSP command will change the serial baud rate of your modem by entering CSPsssss where sssss can equal: CSP0300 - 300 bps.
48 Chapter 4 - Commands 4.2 S-Registers Certain Command Mode configurations are stored in memory registers called, S-Registers. The S command is used to assign a value to, and to read the current value of an S-Register.
49 Chapter 4 - Commands S4 Line Feed Character Unit: ASCII Character Range: 0-127 Default: 10 Description: Defines the character recognized as LINE FEED. S5 Backspace Character Unit: ASCII Character Range: 0-127 Default: 8 Description: Defines the character recognized as BACKSPACE.
50 Chapter 4 - Commands S10 Carrier Loss Disconnect Delay Time Unit: 100 mSec. Range: 0-255 Default: 7 Description: Sets the time a carrier signal must be lost before the modem disconnects.
51 Chapter 4 - Commands S25 DTR Dropout Time Unit: 100 mSec. Range: 0, 1 through 255 Default: 0 Description: Defines DTR dropout time. 0 default equals 50ms. S26 Failed Password Attempts Unit: 1 failed attempt Range: 0-255 Default: 0 Description: Counts the number of times there has been a failed password attempt.
52 Chapter 4 - Commands S36 Time Between DTR Inactive and Modem Off-Hook Unit: 1 Second Range: 0-255 seconds Default: 0 Description: Sets the time between DTR inactive (low) and the modem going off-hook . The DTR Busy-out feature is disabled with S36=0.
53 Chapter 4 - Commands TERSE VERBOSE 0O K 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 * CONNECT 1200 6 NO DIALTONE 7 BUSY 8 NO ANSWER 9 * CONNECT 2400 11 * CONNECT 4800 12 * CONNECT 9600 13 * CONNECT 144.
54 Chapter 4 - Commands TERSE VERBOSE 0O K 1 CONNECT 2 RING 3 NO CARRIER 4 ERROR 5 CONNECT 1200 6 NO DIAL TONE 7 BUSY 8 NO ANSWER 10 CONNECT 2400 11 CONNECT 4800 12 CONNECT 9600 13 CONNECT 14400 19 CO.
55 Chapter 4 - Commands 4.3.1 AT Commands and S-Register Summary The vast majority of installations are similar, with the MT2834 being used to dial up a remote installation where the call is automatically answered.
Chapter 5 - Modem T esting.
57 Chapter 5 - Testing the Modem 5.1 Local Analog Loopback Test/V.54 Loop 3 In this test, data from your computer or terminal is sent to your modem's transmitter, converted into analog form, looped back to the receiver, converted into digital form and then received back at your monitor for verification.
58 Chapter 5 - Testing the Modem ATU1 and hit ENTER to place the modem in Analog Loopback mode, in the Answer mode. Then repeat step 3. 5. When testing is completed, you may exit Answer mode by entering an Escape Sequence ( +++AT<CR> or <BREAK>AT<CR> ), which returns the modem to Command mode.
59 Chapter 5 - Testing the Modem 2. Dial the remote modem by entering the Dial command and the phone number, to establish On-line mode. 3. Type the Escape Sequence ( +++AT<CR> or <BREAK>AT<CR> ) which brings your modem into Command mode, while still maintaining the pseudo On-line mode with the remote modem.
60 Chapter 5 - Testing the Modem 5.3 Digital Loopback Test/V.54 Loop 2 (Remote/Automatic) In this test, your modem must be On-line with another modem set up to respond to a request for Digital Loopback. The test is as follows: 1. Enter Terminal mode.Type AT and hit ENTER.
61 Chapter 5 - Testing the Modem 5.4 Local Analog Loopback Test (Synchronous Mode) To initiate the Local Analog Loopback Test, with the modem in Synchronous mode: 1. Enter AT&M1U . This first switches your modem from asynchronous to synchronous mode, and places it into the Analog Loopback/Originate mode.
62 Chapter 5 - Testing the Modem 5.5 Digital Loopback Test (Local/Manual) (Synchronous Mode) This test must be run when you have a data connection with another modem.
63 Chapter 5 - Testing the Modem 5.6 Digital Loopback Test (Remote/Automatic) (Synchronous Mode) This test must be run when you have a data connection with another modem.
Chapter 6 - W arranty and Service.
65 Chapter 6 - Warranty and Service 6.1 Introduction This chapter starts out with statements about your modem's 2-year warranty. The next section, Tech Support, should be read carefully if you have questions or problems with your modem.
66 Chapter 6 - Warranty and Service 6.3 Tech Support Multi-Tech has an excellent staff of technical support personnel available to help you get the most out of your Multi-Tech product. If you have any questions about the operation of this unit, call 1-800-972-2439.
67 Chapter 6 - Warranty and Service • check or purchase order number for payment if the modem is out of warranty. (Check with your technical support specialist for current charges.) • if possible, note the name of the technical support specialist with whom you spoke.
68 Chapter 6 - Warranty and Service and select the rate you want to program at. Hit ESC when finished. 5. Highlight the "Select File to Program" option in the MAIN MENU. Highlight the .HEX file. Hit ESC when finished. 6. Highlight "Program Firmware" option in the MAIN MENU.
69 Chapter 6 - Warranty and Service 6.6 Internet Multi-Tech is a commercial provider on the Internet, and we retrieve e-mail messages from the following mailboxes on a periodic basis: tsupport@multitech.com Technical Support mtsmktg@multitech.com Marketing Dept.
Chapter 7 - BABT Requirement s.
71 Chapter 7 - BABT Requirements 7.1 Compliance with BABT Requirements Approved for connection to telecommunications system specified in the instructions for use subject to the conditions set out in them.
72 Chapter 7 - BABT Requirements 7.1.1 European Low Voltage Directive When correctly installed and maintained, the modem will present no hazard to the user. When correctly installed the modem will be connected to the PSTN or a PW and to a Data Terminal Equipment (DTE), whose modem connections comply with CCITT recommendation V28.
If a telephone or other device is connected in parallel with the modem, the combined REN must not exceed 4. A BT supplied telephone may be assumed to have REN of 1.
74 Chapter 7 - BABT Requirements 7.1.4 Compliance with BS6328 Part 1 a. The modem is not suitable for use on circuits with British Telecommunications signaling at a normal frequency of 2280 Hz. b. The modem does not require signaling or otherwise employ the frequency range dc to 200 Hz.
Appendices.
76 Appendix A Appendix A FCC Regulations for Telephone Line Interconnection 1. This equipment complies with Part 68 of the Federal Communications Commission (FCC) rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number and ringer equivalence number (REN).
77 Appendix A 5. The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make necessary modifications in order to maintain uninterrupted service.
78 Appendix A Canadian Limitations Notice Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface.
79 Appendix B Appendix B Technical Specifications Your MT2834BR/BRL data/fax modem meets the specifications listed below: Model Numbers MT2834BR, MT2834BRI, MT2834BR-MAC Data Rates (modem) 33600, 3120.
80 Appendix B Flow Control Xon/Xoff, Hardware RTS/CTS, ENQ/ACK, Options Unix-to-Unix Copy Protocol ( UUCP ) "Spoofing" Mode of Operation Full duplex over both dial-up lines and 2-wire leased.
81 Appendix B Frequencies 1650Hz Mark, 1850Hz Space for Transmit Originate; 1650Hz Mark, 1850Hz Space for Transmit Answer; V.27 ter 1800Hz Originate/ Answer; V.29 QAM 1700Hz Originate/Answer; V.17 TCM 1800Hz Originate/Answer Carrier Frequencies 1800 Hz V.
82 Appendix B Frequency Stability ±0.01% Receiver Sensitivity -43 dBm under worst case conditions AGC Dynamic Range 43 dB Interface EIA RS232C/ITU-TSS V.24 Connectors Sixteen DB25 RS232C connectors; sixteen DB9 connectors for phone line (CC216/916/1432/ 2834 Rack Modem Cabinet) or sixteen RJ11 connectors for phone line (CC1600 Rack Modem Cabinet).
Index.
84 Index Index Symbols &E0 1-32 &E1 1-32 &E14 1-31, 1-32 1.1 Technical Specifica- tions 1-81 A Abort Timer S7 1-51 AGC Dynamic Range 1-84 ASCII code 1-26 AT 1-25 AT command set 1-41 AT Com.
85 Index Clear to Send 1-41 cleardown on disconnect 1-36 COM ports COM2 1-29 Command Buffer 1-82 Command mode characters control 1-37 Command string 1-26 Commands Attention code 1-25 Auto-Reliable mod.
86 Index Data Terminal Ready 1-19 Datacomm software 1-22, 1- 25, 1-26, 1-29, 1-30, 1-31 Configuration 1-25, 1-29, 1- 30 Diagnostics 1-84 Dial-Up and Leased Lines 1-18 Dial-Up Lines 1-18 Dialing a stor.
87 Index Inactivity Timer 1-53 S30 1-53 Indicators 1-84 Initialization strings 1-25, 1- 28, 1-32 Macintosh 1-28 PC-compatible 1-26 Installation 1-12 Intelligent Features 1-82 Interface 1-84 Introducti.
88 Index Changing defaults 1-28 Parity 1-25 pause during dialing 1-44 Pause Time for Comma 1-51 S8 1-51 PBX/CBX Disconnect Drop Time for DSR/CTS/CD 1- 52 S24 1-52 PC Board Controls 1-13 PC Initializat.
89 Index 39 Signal to Noise Ratio Informa- tion 1-39 SIT files 1-31 Speed Conversion 1-81 speed conversion 1-35 Standard AT command set responses 1-54 "Standard AT" Result Codes 1-56 T Tech .
S000316.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Multitech MT2834BLR è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Multitech MT2834BLR - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Multitech MT2834BLR imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Multitech MT2834BLR ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Multitech MT2834BLR, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Multitech MT2834BLR.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Multitech MT2834BLR. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Multitech MT2834BLR insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
