and User Guide
MultiModemDSDV User Guide MT5600DSVD and MT5600DSDV2 P/N S0000169 Revision D Copyright © 1998–2004 by Multi-Tech Systems, Inc. All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose.
MultiModemDSVD User Guide Contents Contents Chapter 1 - Introduction ............................................................................ 6 Introduction ............................................................................................................................. 7 Product Description ................................................................................................................ 7 Features .............................................................................
MultiModemDSVD User Guide Contents Chapter 4 - AT Commands...................................................................... 27 AT Commands ...................................................................................................................... 28 AT Command Summary ..................................................................................................... 29 Voice Commands .........................................................................................................
MultiModemDSVD User Guide Contents Appendix D: Upgrading the Modem....................................................... 72 Introduction ........................................................................................................................... 72 Upgrade Overview ............................................................................................................... 72 Step 1: Identify the Modem Firmware .............................................................................
C hapter 1 Introduction
MultiModemDSVD User Guide 1 Introduction Int roduct Intr oductiion Congratulations on your purchase of your MultiModemDSVD! You have acquired not only one of the finest intelligent data, fax, and voice modems available, but a modem that can transmit voice and data at the same time. This user guide will help you to install, configure, test, and use your modem. Product Descr ipt Descript iptiion The MultiModemDSVD modem incorporates both the ITU-T V.
MultiModemDSVD User Guide 1 Introduction Data • Supports the ITU-T V.90 and K56flexTM standards for data transmission speeds up to 56K bps while maintaining compatibility with lower-speed modems. Note: Under the 56K bps standards, you can asymmetrically download data from an ISP at speeds up to 53K bps, whereas you can upload only at speeds up to 33.6K bps. • Supports the enhanced ITU-T V.34 standard, with data transmission speeds to 33.6K bps, while maintaining compatibility with lower-speed modems.
MultiModemDSVD User Guide 1 Introduction W ha t Is in Your Mod em P ackag e? hat Modem Pa age? Your modem package has several components. Make sure you have them all before trying to operate your modem.
C hapter 2 Installat ion
MultiModemDSVD User Guide 2 Installation Int roduct Intr oductiion This chapter shows step-by-step how to set up your MultiModemDSVD and configure your communications software to work with it.
MultiModemDSVD User Guide 2 Installation Step 1: Mount tthe he F eet Feet The modem comes with a strip of self-adhesive plastic feet, which you can optionally mount on the bottom of the modem. To install the feet, simply peel them from their paper strip and press them into the recesses on the bottom of the modem. Figure 2-1. Mounting the feet.
MultiModemDSVD User Guide 2 Installation J10 Speaker Mode Closed: stereo (default) Open: mono J10 Figure 2-2. Location of speaker jumper. (MT5600DSDV only) Changing the Speaker Jumper The speaker jumper (J10) is behind the internal speaker near the external speaker jack (see Figure 2-2). • To use the MultiModemDSVD with a monophonic external speaker, remove the jumper plug from the J10 jumper pins. You can store it by placing it on one jumper pin.
MultiModemDSVD User Guide 2 Installation Step 3: C onne ct tthe he Mod em to Your Sy stem Co nnect Modem System Placing the modem in a convenient location, connect it to your computer’s serial port, to the telephone line, to AC power, and, optionally, to your telephone. For voice operations, connect it to the supplied headset or, optionally, to a microphone and a speaker or sound card. Note: Do not turn on the modem until you have made all the connections.
MultiModemDSVD User Guide 2 Installation Note: The Federal Communications Commission (FCC), Industry Canada, and other government agencies may impose certain restrictions on equipment connected to public telephone systems. For more information, see Appendix A. Phone Connection For voice-only calls, you can optionally plug a telephone into the modem’s PHONE jack. Microphone Connection (MT5600DSDV only) Plug the microphone plug of the supplied headset into the MIC jack on the side of the modem.
MultiModemDSVD User Guide 2 Installation Step 4: Inst al he Mod em Dr iv er Instal alll tthe Modem Driv iver If you use Windows 98, Windows Me, Windows NT 4.0, or Windows 2000, you must install the modem driver, which is installed using the Windows Plug and Play feature. Follow the four-step procedure below. The modem driver is used by Windows to control the modem. Installing the Modem Driver 1. Make sure your modem is connected properly, and then turn on your computer.
MultiModemDSVD User Guide 2 Installation Step 5: Inst al neT oo t war e Instal alll Pho PhoneT neToo oolls Sof Soft are Multi-Tech includes PhoneTools communications software with your modem. However, the modem will work with most data communications software. To install PhoneTools, insert the MultiModemDSVD system CD into your CD-ROM drive; click the PhoneTools icon. You will be asked to choose your language. The software will then automatically load onto your PC.
C hapter 3 - Operat ion
MultiModemDSVD User Guide 3 Operation Int roduct Intr oductiion Like any modem, your MultiModemDSVD operates only under the control of a communication program, such as the one included with the modem. It also operates under other general-purpose data communication programs, such as Windows Terminal and HyperTerminal. For information on how to use the modem with the communication program of your choice, please refer to the program’s documentation.
MultiModemDSVD User Guide 3 Operation OH Off-Hook. The OH LED lights when the modem is off-hook, which occurs when the modem is dialing, online, or answering a call. The LED flashes when the modem pulse-dials. TR Terminal Ready. The TR LED lights when a datacomm program initializes the modem. It means the modem is ready for an outgoing or incoming call. It goes off when the datacomm program disconnects the COM port. When it goes off, a connected modem will disconnect.
MultiModemDSVD User Guide 3 Operation Dial-Up Net work ing Netw rking Whether you use the Internet for e-mail or for browsing the Web, to connect to it through your modem, you must first set up a remote-node client program. The one in Windows 95, 98, Me, NT 4.0, and 2000 is called Dial-Up Networking. Dial-Up Networking establishes your connection to the ISP’s server, which is the shared computer that manages calls from clients (your computer) to the Internet.
MultiModemDSVD User Guide 3 Operation Dial-Up Networking in Windows Me To install Dial-Up Networking Dial-Up Networking is automatically installed with Windows Me. To create a connection entry 1. Click Start, point to Programs, point to Accessories, point to Communications, and then click Internet Connection Wizard. 2. Click I want to sign up for a new Internet account, and then click Next. 3. Follow the instructions for setting up your dial-up properties and detecting your modem.
MultiModemDSVD User Guide 3 Operation To create a connection entry 1. Double-click the My Computer icon, and then double-click the Dial-Up Networking icon. 2. In the Dial-Up Networking dialog box, click the New button. 3. In the New Phonebook Entry wizard, follow the directions to create a connection entry. To dial your Internet access provider 1. Double-click the My Computer icon. 2. Double-click the Dial-Up Networking icon. 3. Click the connection in Phonebook entry to dial. 4. Click Dial. 5.
MultiModemDSVD User Guide 3 Operation Fax Oper at io n Opera Using the PhoneTools program included with your modem, you can use your modem to send and receive faxes directly from your computer. The following procedure uses print capture, which enables you to fax a document directly from the Windows application in which you created it without opening PhoneTools. 1. Create a document in a Windows application, such as a word processor, graphic editor, or spreadsheet.
MultiModemDSVD User Guide 3 Operation To Answer a Voice Call in Speakerphone Mode 1. In the terminal window of your communications application, type AT and press ENTER. The modem will respond with OK. 2. Type AT&F and press ENTER to reset the modem to its default configuration. 3. Type AT#CLS=8#VRN=0#VLS=6S0=0 and press ENTER to initialize the modem for speakerphone mode. 4. To answer a call in speakerphone mode upon receipt of a RING message, type ATA and press ENTER.
MultiModemDSVD User Guide 3 Operation To Answer a DSVD Call Using the Headset (MT5600DSDV only) 1. In the terminal window of your communications application, type AT and press ENTER. The modem will respond with OK. 2. Type AT&F and press ENTER to reset the modem to its default configuration. 3. Type AT-SMS=1#VLS=5 and press ENTER to enable DSVD mode using the headset. 4. When the modem responds by displaying RING on the screen, type ATA and press ENTER to answer the call. 5.
C hapter 4 - AT Commands
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes AT C omm ands Co mmands AT commands are used to control the operation of your modem. They are so called because each command must be preceded by the characters AT to get the ATtention of the modem. AT commands can be issued only when the modem is in command mode or online command mode. The modem is in command mode whenever it is not connected to another modem.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes AT C omm and Summ ar y Co mmand Summar ary Command: Values: Description: AT Command: Values: Description: ENTER Key n/a Press the ENTER or RETURN key to execute most commands. Command: Values: Description: A Answer n/a Answers an incoming call before the final ring. Command: Values: Description: A/ Repeat Last Command n/a Repeats the last command string. Do not precede this command with AT. Do not press ENTER to execute.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Return to command mode after dialing. (Place at end of dial string.) ! Hook flash. Causes the modem to go on-hook for the time specified in S29, then off-hook again . @ Wait for silence. Causes the modem to wait for 5 seconds of silence before processing the next part of the command. If silence is not detected within the time set in register S7, the modem returns a NO ANSWER or BUSY code. ^ Toggle data calling tone on or off.
MultiModemDSVD User Guide Command: Values: Default: Description: Ln L0 L1 L2 L3 4 AT Commands, S-Registers, and Result Codes Monitor Speaker Volume n = 0, 1, 2, or 3 1 Select low volume. Select low volume. Select medium volume. Select high volume. Note: Use the M command to turn the speaker on or off. Command: Value: Default: Description: L5 Display Legacy Parameters 5 None Displays the current values for the error correction, flow control, data compression, and serial port speed commands.
MultiModemDSVD User Guide Command: Values: Default: Description: On O0 O1 4 AT Commands, S-Registers, and Result Codes Return Online to Data Mode 0 or 1 None Exit online command mode and return to online data mode without a retrain. Normally used after a +++ escape (see +++AT escape sequence). Exit online command mode and return to online data mode after a retrain.
MultiModemDSVD User Guide Command: Values: Default: Description: Wn W0 W1 W2 4 AT Commands, S-Registers, and Result Codes Connect Message Control n = 0, 1, or 2 0 The CONNECT result code reports the serial port speed only. The CONNECT result code reports the line speed, the error correction protocol, and the serial port speed, respectively. The CONNECT result code reports the line speed only.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: &Cn Data Carrier Detect (DCD) Control n = 0 or 1 1 &C0 Forces the DCD circuit to always be high. &C1 DCD goes high when the remote modem’s carrier signal is detected, and goes low when the carrier signal is not detected.
MultiModemDSVD User Guide Command: Values: Default: Description: 4 AT Commands, S-Registers, and Result Codes &En V.42bis Data Compression n = 14 or 15 15 &E14 V.42bis data compression disabled. &E15 V.42bis data compression enabled. Note: This command controls only V.42bis data compression, whereas the %C command controls both V.42bis and MNP-5 data compression. The command in effect is the one last entered. See also the L5 command.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Command: Values: Default: Description: &Mn Communications Mode n=0 0 This command determines the DTR operating mode. The modem treats the &M command as a subset of the &Q command. &M0 Selects direct asynchronous operation. Note that the command sequence &M0\N0 selects normal buffered mode, but the command sequence \N0&M0 selects direct mode. This is because the \N0 command is analogous to the &Q6 command.
MultiModemDSVD User Guide &T3 &T4 &T5 &T6 &T7 &T8 Command: Values: Default: Description: &V0 4 AT Commands, S-Registers, and Result Codes Start local digital loopback, V.54 Loop 2. If no connection exists, ERROR is returned. Enables acknowledgment for remote digital loopback request. Ignores acknowledgment for remote digital loopback request. Requests a remote digital loopback, V.54 Loop 2, without selftest. If no connection exists, ERROR is returned.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes &Zy=x Store Telephone Number y = 0–3 x = Dialing command Default: None Description: Stores telephone dial string x in memory location y. Each telephone number dial string can contain up to 34 digits. Dial the stored number using the command ATDS=y. Command: Values: Note: DTR dialing uses the number stored in memory location 0.
MultiModemDSVD User Guide Command: Values: Default: Description: 4 AT Commands, S-Registers, and Result Codes %U PCM Code Selection n = 0 or 1 0 Specifies the PCM code type for 56K modulation. Note, however, that the modem automatically selects the code type if the server sends the proper ID. %U0 Selects µ-Law coding—used in North America and Japan. %U1 Selects A-Law coding—used outside North America and Japan. Note: See also the +MS= command.
MultiModemDSVD User Guide \K0 \K1 \K2 \K3 \K4 \K5 Command: Values: Default: Description: \Nn \N0 \N1 \N2 \N3 \N4 \N5 Command: Values: Default: Description: \Vn \V0 \V1 Multi-Tech Systems, Inc. 4 AT Commands, S-Registers, and Result Codes Online command mode. The modem receives a \Bn command from the computer: Clear data buffers and send break to the remote modem. Same as \K0. Send break immediately to the remote modem. Same as \K2.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Command: +MS= Modulation Selection Values: See description. Default: See description. Description: This extended-format command selects modulation and, optionally, enables or disables automode, specifies the lowest and highest connection rates, selects µ-Law or A-Law codec type, and specifies the highest transmit rate using one to five subparameters.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes 0 1 2 3 9 10 11 Modulation V.21 V.22 V.22bis V.23 V.32 V.32bis V.34 Possible rates (bps) 1 300 1200 2400 or 1200 1200 9600 or 4800 14400, 12000, 9600, 7200, or 4800 33600, 31200, 28800, 26400, 24000, 21600,19200, 16800, 14400, 12000, 9600, 7200, 4800, or 2400 56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667, 45333, 44000, 42667, 41333. 40000, 38667, 37333, 36000, 34667, 33333, 32000, 30667, 29333, or 28000 12 2 V.
MultiModemDSVD User Guide Command: -SDR=n Values: Default: Description: 4 AT Commands, S-Registers, and Result Codes Distinctive Ring Control 0–7 0 This command enables or disables detection and reporting of distinctive ring. One, two, or three distinctive ring types can be simultaneously enabled depending upon the value of n. The detected ring type is reported in the verbose result code by appending the ring type number to the end of the RING message. -SDR=0 Disables distinctive ring.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Command: $SBn Serial Port Baud Rate Values: n = speed in bits per second Default: 57600 Description: $SB300 Set serial port to 300 bps. $SB1200 Set serial port to 1200 bps. $SB2400 Set serial port to 2400 bps. $SB4800 Set serial port to 4800 bps. $SB9600 Set serial port to 9600 bps. $SB19200 Set serial port to 19200 bps. $SB38400 Set serial port to 38400 bps. $SB57600 Set serial port to 57600 bps.
MultiModemDSVD User Guide Command: -SSE=n Values: Default: Description: -SSE=0 -SSE=1 4 AT Commands, S-Registers, and Result Codes DSVD Enable/Disable n = 0 or 1 0 Disable DSVD. Enable DSVD. Note: DSVD mode can be enabled by either the -SSE=1 or the -SMS=1 command, and disabled by either -SSE=0 or -SMS=0. Command: #BDR=n Baud Rate Select Values: n = 0–48 Default: 0 Description: #BDR=0 Enables autobaud detection on the serial port interface. #BDR=n 1
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes S -R eg isters -Reg egisters Certain modem values, or parameters, are stored in memory locations called Sregisters. Use the S command to read or to alter the contents of S-registers (see previous section). Register Unit Range Default Description S0 1 ring 0, 1–255 1 Sets the number of rings before the modem answers. ATS0=0 disables autoanswer completely. S1 1 ring 0–255 0 Counts the rings that have occurred.
MultiModemDSVD User Guide Register Unit 4 AT Commands, S-Registers, and Result Codes Range Default Description S18 seconds 0–255 0 Sets the length of time that the modem conducts an &T test before it returns to the command mode. If the value is zero, the test must be terminated from command mode by issuing an &T0 or H command. When S18 is non-zero, the modem returns the OK message upon test termination.
MultiModemDSVD User Guide Register Unit 4 AT Commands, S-Registers, and Result Codes Range Default Description 6 Reserved. 7 An MNP connection is attempted and if it fails, a normal modem connection is established. S37 decimal 0 0 S38 seconds 0–254, 255 20 Sets the delay between the modem’s receipt of the H command to disconnect (or highto-low transition of DTR if the modem is programmed to follow the signal), and the disconnect operation. Applies only to errorcorrection connections.
MultiModemDSVD User Guide Register 4 AT Commands, S-Registers, and Result Codes Unit Range Default Description S86 decimal 0, 3–23 n/a When the modem issues a NO CARRIER result code, a value is written to this register to help determine the reason for the failed connection. S86 records the first event that contributes to a NO CARRIER message. Use the S86? command to read the value. 0 Normal disconnect; no error occurred. 3 Call Waiting caused disconnect. 4 Physical loss of carrier.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Result C od es Cod odes In command mode your modem can send the following responses, called result codes, to your computer. Result codes are used by communications programs and can also appear on your monitor. Terse 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 23 24 32 33 35 40 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 61 Multi-Tech Systems, Inc.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Terse Verbose 62 63 64 66 67 69 70 77 78 79 80 81 84 91 150 151 152 153 154 155 156 157 158 159 160 161 162 165 166 167 168 169 170 171 172 173 174 175 176 177 180 180 181 181 182 182 183 183 184 184 CONNECT 24000 Connected at 24000 bps CONNECT 26400 Connected at 26400 bps CONNECT 28800 Connected at 28800 bps COMPRESSION CLASS 5 Connected with MNP Class 5 data compression COMPRESSION V.42 bis Connected with V.
MultiModemDSVD User Guide 4 AT Commands, S-Registers, and Result Codes Terse Verbose Description 185 185 186 186 187 187 188 188 189 189 190 190 191 191 192 192 193 193 194 194 +F4 CONNECT 37333 CARRIER 37333 CONNECT 38667 CARRIER 38667 CONNECT 41333 CARRIER 41333 CONNECT 42667 CARRIER 42667 CONNECT 45333 CARRIER 45333 CONNECT 46667 CARRIER 46667 CONNECT 49333 CARRIER 49333 CONNECT 50667 CARRIER 50667 CONNECT 53333 CARRIER 53333 CONNECT 54667 CARRIER 54667 +FCERROR Connected at 37333 bps (V.
C hapter 5 - Solving P roblems
MultiModemDSVD User Guide 5 Solving Problems Int roduct Intr oductiion Your modem was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective. However, it is more likely that the source of your problem lies elsewhere. The following symptoms are typical of problems you might encounter: • None of the LEDs light when the modem is on.
MultiModemDSVD User Guide 5 Solving Problems T he Mod em D oes Not R espo nd to C omm ands Modem Does Respo espond Co mmands ✔ Make sure the modem is plugged in and turned on. (See “None of the Indicators Light.”) ✔ Make sure you are issuing the modem commands from the data communications software, either manually in terminal mode or automatically by configuring the software. (You cannot send commands to the modem from the DOS prompt.
MultiModemDSVD User Guide 5 Solving Problems Windows 9x: Right-click on My Computer, select Properties from the menu, click on the Device Manager tab, double-click on Ports, then double-click on the communication port your modem is connected to. In the port’s Properties sheet, click on the Resources tab to see the port’s input/output range and interrupt request. If another device is using the same address range or IRQ, it appears in the Conflicting Device List.
MultiModemDSVD User Guide 5 Solving Problems ✔ If the modem reports BUSY, the other number might be busy, in which case you should try again later, or it might indicate that you have failed to add a 9, prefix to the phone number if you must dial 9 for an outside line. If you must dial 9 to get an outside line, the easiest way to dial it automatically is to include it in the modem’s dial prefix, e.g., ATDT9,. Note the comma, which inserts a pause before the number is dialed.
MultiModemDSVD User Guide 5 Solving Problems T he Mod em Cannot C onne ct W hen Modem Co nnect Ans wer ing ering Answ ✔ Autoanswer might be disabled. Turn on autoanswer in your datacomm program or send the command ATS0=1 (ATS0=2 if you have Caller ID service) to your modem in terminal mode. File Tr ansf er Is Slo wer T han IIt t Should Be Transf ansfer Slow ✔ You might have an older UART. For best throughput, install a 16550AFN UART or a Multi-Tech ISI serial port card.
MultiModemDSVD User Guide 5 Solving Problems ✔ If you are running under Windows 3.1 and have a 16550AFN UART, you might need to turn on the 16550’s data buffers and/or replace the Windows serial driver, COMM.DRV. ✔ Try entering the &V1 command to display information about the last connection, making a screen print of the connection statistics, and checking for parameters that might be unacceptable.
Appendixes
MultiModemDSVD User Guide A Regulatory Compliance Appendix A : R eg ula to ry C o mp lianc e Reg egula ulato tor Co mplianc liance FCC P ar t 68 Tele com Par art elec 1. This equipment complies with part 68 of the Federal Communications Commission Rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number. This information must be provided to the telephone company. 2.
MultiModemDSVD User Guide A Regulatory Compliance 10. If so required, this equipment is hearing-aid compatible. Manufacturer: Model Number: FCC Registration No: Ringer Equivalence: Modular Jack (USOC): Multi-Tech Systems, Inc. MT5600DSVD AU7USA-24713-M5-E 0.3B RJ11C or RJ11W (single line) Service Center in USA: Multi-Tech Systems, Inc. 2205 Woodale Drive Mounds View, MN 55112 U.S.A.
MultiModemDSVD User Guide A Regulatory Compliance Fax Br anding St atement Branding Sta The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device, including fax machines, to send any message unless such message clearly contains the following information: • Date and time the message is sent • Identification of the business or other entity, or other individual sending the message • Telephone number of the sending machine or such business, oth
MultiModemDSVD User Guide A Regulatory Compliance EM C, S af et y, and R&T T E Dir ect iv eC omp lianc e EMC, Saf afet ety R&TT Dire ctiv ive Co mplianc liance The CE mark is affixed to this product to confirm compliance with the following European Community Directives: • Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member States relating to electromagnetic compatibility; and • Council Directive 73/23/EEC of 19 February 1973 on the harmonization of the laws of Member Stat
MultiModemDSVD User Guide B Technical Specifications Appendix B: Techni cal Spe cif hnic Specif cifiicat ions Your MultiModemDSVD modem meets the following specifications: Trade Name MultiModemDSVD™ Model Number MT5600DSVD or MT5600DSVD2 Server-to-Client Data Rates K56flex or V.90 speeds when accessing an ISP type K56flex or V.
MultiModemDSVD User Guide B Technical Specifications Data Modulation FSK at 300 bps, PSK at 1200 bps, QAM at 2400, 4800, and 9600 bps (non-trellis), QAM with trellis-coded modulation (TCM) at 9600, 12,000, 14,400, 16,800, 19,200, 21,600, 24,000, 26,400, 28,800, 31,200, 33,600, and 56,000 bps Fax Modulation V.21 CH2 FSK at 300 bps (half duplex) V.27ter DPSK at 4800 and 2400 bps V.29 QAM at 9600 and 7200 bps V.17TCM at 14400, 12000, 9600, and 7200 bps Carrier Frequencies ITU-T V.
MultiModemDSVD User Guide B Technical Specifications Voice Compression and Sampling Rate PCM 128, 8000 Hz, or IMA ADPCM, 8000 Hz, (selectable via #V commands). Note that your computer system should have a processing speed of at least 75 MHz to take full advantage of the telephony features of this product. Transmit Level -11 dBm (dial-up) Frequency Stability ±0.01% Receiver Sensitivity -43 dBm under worst-case conditions AGC Dynamic Range 43 dB Impedances Microphone input: 2.
MultiModemDSVD User Guide C Warranty, Service, and Technical Support Appendix C: War rant y, Ser vice, and arr anty Serv Techni cal Suppo rt Suppor hnic Mult iTech Sy stems rant y&R epairs P oli ci es ultii-T Systems stems,, Inc. War arr anty Repairs Po lici cies Warranty Multi-Tech Systems, Inc.
MultiModemDSVD User Guide C Warranty, Service, and Technical Support Please direct your questions regarding technical matters, product configuration, verification that the product is defective, etc., to our Technical Support department at (800) 972-2439 or email tsupport@multitech.com. Please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting department at (800) 328-9717 or (763) 717-5631, or email mtsrepair@multitech.com.
MultiModemDSVD User Guide C Warranty, Service, and Technical Support Ser v i ce Serv U.S. and Canadian Customers In the event that service is required, products may be shipped, freight prepaid, to our Mounds View, Minnesota, factory: Multi-Tech Systems, Inc. 2205 Woodale Drive Mounds View, MN 55112 Attn: Repairs, Serial #______ A Returned Materials Authorization (RMA) is not required. Return shipping charges (surface) will be paid by MTS.
MultiModemDSVD User Guide C Warranty, Service, and Technical Support you, as listed at http://www.multitech.com/COMPANY/offices/DEFAULT.ASP., or email tsupport@multitech.com. When calling the U.S., please direct questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting department at +763 717-5631 in the U.S.A., or e-mail mtsrepair@multitech.com.
MultiModemDSVD User Guide Multi-Tech Systems, Inc.
