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Data/V oice/Fax Concentrator Desktop Models: DT101, DT102, DT101/xx, DT102/xx Rack-Mount Models: DT101R, DT102R, DT101R/xx, DT102R/xx Owner ’ s Manual.
Owner ’s Manual 82052704 Revision E DataT alker™ Series Desktop Models: DT101, DT101/xx, DT102, DT102/xx Rack-Mount Models: DT101R, DT101R/xx, DT102R, DT102R/xx This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-T ech Systems, Inc.
Contents Chapter 1 - Introduction and Description 1.1 Introduction ................................................................................................................ .................... 8 1.2 About This Manual ..........................
Chapter 4 - Unpacking and Configuration 4.1 Introduction ................................................................................................................ .................. 44 4.2 Unpacking .............................................
Appendixes Appendix A - ASCII Conversion Chart ............................................................................................ ......... 1 18 Appendix B - RS-232C Interface Specification ...................................................
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Chapter 1 - Introduction and Description.
8 DataT alker Owner ’ s Manual 1.1 Introduction Congratulations! Y our new Multi-T ech DataT alker™ is one of the finest data/voice/fax concentrators on the market today .
9 Chapter 1 - Introduction and Description Chapter 4 - Unpacking and Configuration This chapter describes the contents of the shipping container; provides a customizeable configuration summary; discusses configuration considerations for the data port, voice/fax channel, and the composite link; and provides a detailed configuration procedure.
10 DataT alker Owner ’ s Manual 1.3 Product Description The DataT alker series of multiplexers has a single synchronous or asynchronous data channel, a command port, one or two voice/fax channels, a.
11 Chapter 1 - Introduction and Description communications software to the DA T A/COMMAND connector on the back panel and configure the data channel for the type of data that is going to be transferred.
12 DataT alker Owner ’ s Manual 1.4 System Features 1.4.1 V oice/Fax The voice/fax feature of the DataT alker allows you to establish voice or fax traf fic on top of your normal data communications over a composite link, saving the expense of extra communications lines.
13 Chapter 1 - Introduction and Description 1.4.6 Diagnostics Diagnostics in a network are of considerable importance. That is why the DataT alker is equipped with several diagnostic modes that will test every aspect of the network.
14 DataT alker Owner ’ s Manual 1.5 FCC Regulations for T elephone Line Interconnection 1. This equipment complies with Part 68 of the 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).
15 Chapter 1 - Introduction and Description 1.6 Canadian Limitations Notice Notice: The Canadian Department of Communications label identifies certificated equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements.
16 DataT alker Owner ’ s Manual 1.7 Specifications 1.7.1 Async Data Channel Number of Channels One Maximum Speed 1 15,200 bps Channel Speed All standard speeds from 300 bps to 1 15,200 bps Data Format 5, 6, 7, or 8 data bits, with 1, 1.
17 Chapter 1 - Introduction and Description 1.7.5 Internal Modem Modulation ITU-T V .34; A T&T V .32 terbo; ITU-T V .32bis, V .32, V .22bis, V .22; Bell 212A and 103 (North America) or V .
18 DataT alker Owner ’ s Manual 1.7.9 Electrical/Physical Desktop Models: Power Supply Input 100 to 250 V AC Power Supply Output +5v@5A, +12v@1A, -12v@0.5A Power Consumption 20 watts Dimensions 2.3 " high x 9 " wide x 12.8 " deep 5.7 cm high x 22.
Chapter 2 - Configuration.
20 DataT alker Owner ’ s Manual 2.1 Introduction The Multi-T ech DataT alker is available in both desktop (DT10x) and rack-mount (DT10xR) versions. The desktop version is designed for home of fice applications.
21 Chapter 2 - Configuration 2.2 Configuration 1 - Dial-Up Link Configuration 1 is a dial-up link using a pair of DataT alkers to provide data communications between a home of fice PC and the main of fice host computer and telephone services through the main of fice telephone system.
22 DataT alker Owner ’ s Manual When you established communication, the Main Menu appeared. From the Main Menu you can configure the unit, display statistics, reset various functions within the Data.
23 Chapter 2 - Configuration Enter S and press ENTER to store all configurations for the main of fice. Set up the home office unit the same way , except that you should switch the local and remote interface types (FXS for the local interface and FXO for the remote interface).
24 DataT alker Owner ’ s Manual T o connect the home office DataT alker to its PC, connect an RS232C cable between the DA T A/ COMMAND connector on the DataT alker and an async port on the PC (typically , COM1 or COM2). Place DIP switch position 3 on the side of the DataT alker in the OPEN (up) position to enable the data channel.
25 Chapter 2 - Configuration 2.3 Configuration 2 - MMH900 Series with V oice/Fax Configuration 2 adds voice capability to an existing data-only network using the same composite link.
26 DataT alker Owner ’ s Manual A series of configuration menus provides simple and complete configuration information for each aspect of the DataT alker .
27 Chapter 2 - Configuration The data port in this configuration will be set up for synchronous operation. T o configure the data port for sync operation, enter 1 (Aysnc/Sync) option and change the default Async to Sync. The data port configuration menu displays the sync parameters.
28 DataT alker Owner ’ s Manual 2.4 Configuration 3 - LAN to LAN Configuration 3 is an example of a pair of DataT alkers providing the link between two LANs with the added benefit of voice or fax traffic over the same composite link. Bridging the LANs over a single high speed composite link expands the capacity of each LAN.
29 Chapter 2 - Configuration T o configure the DataT alker , enter 1 and press ENTER. The Configurations menu is displayed. From this menu you can configure the data port, voice/fax channel(s), or the composite link.
30 DataT alker Owner ’ s Manual Data Port Configuration 1 - Async/Sync: Sync 2 - Speed: 19200 3 - Clocking: Internal 4 - Idle Condition: Flags 5 - NRZ/NRZI Encoding: NRZ 6 - CRC Preset: All 1s 7 - I.
31 Chapter 2 - Configuration The DataT alker knows the type of link device being used by the way a DIP switch is set or by detecting a device installed on the main PC board.
32 DataT alker Owner ’ s Manual 2.5 Configuration 4 - PBX to PBX Configuration 4 is a data/voice/fax configuration that uses two DataT alkers to link two PBXs.
33 Chapter 2 - Configuration The Configurations menu is displayed. From this menu you can configure the data port, voice/fax channel(s), or the composite link.
34 DataT alker Owner ’ s Manual Composite Link Settings - Inter nal TA 1 - On-Line XMT Rate: 128000 2 - Configure TA 3 - DOD/DOI: Off S - Store All Conf igurations M - Main Menu P - Previous Menu Selection : _ The terminal adapter menu displays the transmit rate and option 2 allows you to configure the terminal adapter .
Chapter 3 - Front and Rear Panel Descriptions.
36 DataT alker Owner ’ s Manual 3.1 Introduction This chapter describes the DataT alker front and back panels and switches. The front panel contains LED indicators for the data channel device, voice/fax channels, and the composite link. It also contains one or two switches, depending on whether it is a desktop or rack version.
37 Chapter 3 - Front and Rear Panel Descriptions V oice/Fax Channels FXS (Foreign Exchange Station) This indicator lights when the voice/fax channel is configured for FXS operation. FXO (Foreign Exchange Office) This indicator lights when the voice/fax channel is configured for FXO operation.
38 DataT alker Owner ’ s Manual 28.8/56 (28.8K bps/56K bps) This composite link speed indicator displays the baud rate of the internal modem (28.8) or DSU (56K). The type of composite link device is indicated by which of the EXT , MDM, DSU, or T A indicators lights.
39 Chapter 3 - Front and Rear Panel Descriptions 3.3 Connectors The cable connections for the DataT alker are made at the back panel. Refer to Chapter 5 for cabling installation procedures. Refer to Appendix C for cabling diagrams. The DataT alker back panel is shown in Figure 3-2.
40 DataT alker Owner ’ s Manual 3.3.7 VOICE/F AX CHANNEL 1 E&M Connector Use the E&M connector to connect the DataT alker to the E&M connector on an analog PBX trunk when linking two PBXs together . The E&M connector is an RJ-48 jack.
41 Chapter 3 - Front and Rear Panel Descriptions 3.4 Switches and Shunts DataT alker switches include one or two switches on the front panel, a power switch on the back panel of the desktop version, and a DIP switch and shunt on the main printed circuit board (Figures 3-3 and 3-4).
42 DataT alker Owner ’ s Manual 3.4.3 DIP Switch The eight-position DIP switch is accessible through a cutout in the left side of the DataT alker series enclosure; its location is shown in Figures 3-3 and 3-4.
Chapter 4 - Unpacking and Configuration.
44 DataT alker Owner ’ s Manual 4.1 Introduction This chapter describes what to expect in your DataT alker shipping box, then describes how to configure the DataT alker .
45 Chapter 4 - Unpacking and Configuration 4.3 Configuration Summary The following chart shows possible configurations for your DataT alker . Use it as a snapshot of how your unit is set up. Circle the parameters that apply to your unit. For example, if your unit has the data channel set up for asynchronous communications, circle “Async.
46 DataT alker Owner ’ s Manual 4.5 V oice/Fax Channel Configuration Considerations When configuring the voice/fax channels on your DataT alker , the first question you should ask yourself is what the voice/fax port is connected to.
47 Chapter 4 - Unpacking and Configuration 4.6 Composite Link Configuration Considerations The composite link configuration depends on the type of device used as the composite link device. The DataT alker knows the type of composite link device being used by the setting of a DIP switch and the sensing of conditions within the unit.
48 DataT alker Owner ’ s Manual 4.7 Configuration Procedure Table 4-1. Configuration Procedure Step Procedure 1 Review the configuration considerations for the data port, the voice/fax channel, and the composite link in the previous sections. 2 Place DIP switch position 3 in the down (closed) position to enable the command port.
49 Chapter 4 - Unpacking and Configuration 6 Apply power to the terminal or PC. Run your PC communications software in terminal mode. Press the ENTER key twice to establish communications with the Dat.
50 DataT alker Owner ’ s Manual 9 Configure the data port to meet the conditions of your installation by selecting option numbers from the menus. Refer to Chapter 6 for a description of the Data Port Configuration menu options. For example, if you are setting up the data port as a sync data channel, enter number 1 and press ENTER.
51 Chapter 4 - Unpacking and Configuration 12 Configure voice/fax channel 1 to meet the conditions of your installation by selecting option numbers from the menus. • Accept the defaults for the first five options. • Select the local interface type (option 6).
52 DataT alker Owner ’ s Manual • Configure the internal MMH2834 modem to meet the conditions of your installation by selecting option numbers from the menus.
53 Chapter 4 - Unpacking and Configuration T o verify and/or change the terminal adapter ’ s configuration, select option 2, wait 5 seconds, and enter A T!V to access the terminal adapter ’s configuration menu. Refer to the ISDN T erminal Adapter Owner ’ s Manual for configuration commands.
54 DataT alker Owner ’ s Manual.
Chapter 5 - Installation.
56 DataT alker Owner ’ s Manual 5.1 Introduction This chapter describes how to connect the DataT alker to your system (T able 5-1) and how to move the RS232/V .
57 Chapter 5 - Installation MMH2834 Modem, Leased Line Connect the RJ-1 1 phone cable supplied with the DataT alker from the internal modem LEASED connector on the back panel to the leased line connection. MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DATA/COMMAND RS232C/V.
58 DataT alker Owner ’ s Manual External Modem, DSU, or ISDN T erminal Adapter 3 If the external device has an RS232 interface, connect the composite link cable supplied with the DataT alker from the EXTERNAL COMPOSITE RS232C/V .35 connector on the back panel to the external device.
59 Chapter 5 - Installation If you are connecting the voice/fax channel to the station side of a PBX, connect an RJ-1 1 phone cable from the VOICE/FAX CHANNEL FXO connector on the DataT alker to the station side of the PBX. Refer to the PBX manual for the station side connection.
60 DataT alker Owner ’ s Manual 5.3 V .35 Shunt Table 5-2. V.35 Shunt Procedure Step Procedure 1 Desktop version: Unplug the power supply from the back of the unit.
61 Chapter 5 - Installation 5.4 Power-On and Checkout The desktop and rack-mounted versions of the DataT alker differ in how power is applied. The desktop version has a power switch that you must turn on. The rack version has no power switch; you apply power by inserting it into a powered-up rack.
62 DataT alker Owner ’ s Manual 6 V erify that the voice/fax channel is connected at the remote site. One of the following conditions will apply depending on how your local and remote sites are set .
63 Chapter 5 - Installation V oice/Fax Channel If the voice/fax channel is not communicating with the remote site or the remote site cannot communicate with you, check the following items: • The channel configuration does not match how the channel is cabled.
64 DataT alker Owner ’ s Manual.
Chapter 6 - Menus.
66 DataT alker Owner ’ s Manual 6.1 Introduction The menu system for the DataT alker provides a set of user-friendly configuration menus that are accessible from a main menu. The Main Menu contains five options that allow you to configure your DataT alker , display statistics, reset options, run diagnostic tests, and exit the command mode.
67 Chapter 6 - Menus 6.2.1 Data Port Configuration The Data Port Configuration menu allows you to configure the data channel for either asynchronous or synchronous operation, depending on the type of device connected to the channel. If the port is configured for synchronous operation, refer to Sync Data Port Configuration.
68 DataT alker Owner ’ s Manual The Echo option enables data entered on the channel device keyboard to be returned to the channel device monitor . The purpose of this option is so that an operator will not experience undue delays in seeing entered data appear on their monitor .
69 Chapter 6 - Menus 6.2.2 Sync Data Port Configuration The Data Port Configuration menu allows you to configure the data channel for either asynchronous or synchronous operation, depending on the type of device connected to the channel.
70 DataT alker Owner ’ s Manual 6.2.3 V oice/Fax Channel Configuration The V oice/Fax Channel Configuration menu is displayed only if the second voice/fax channel card is installed in the DataT alker . If only one voice/fax channel is installed in the DataT alker , this menu does not appear .
71 Chapter 6 - Menus The output level attentuation needs to be set at the DataT alker that is receiving (hearing). Increasing the output level gain at the transmitting DataT alker will have no affect .
72 DataT alker Owner ’ s Manual The Local Interface T ype option configures the local voice/fax channel interface. The options are for an FXS, FXO, or E&M interface. When the voice/fax channel is connected to a telephone set or fax machine, the local interface type must be FXS.
73 Chapter 6 - Menus 6.2.4 Composite Link Configuration The Composite Link Configuration menu that is displayed depends on whether an internal or external device is installed as well as on the position of DIP switch position 2.
74 DataT alker Owner ’ s Manual The Dial/Leased option selects the type of connection to the telephone company . If the data line provided by the telephone company is a dial-up line, then you must select the dial option. The options are Dial and Leased with the default being Dial.
75 Chapter 6 - Menus Composite Link Settings - Internal 56K DSU The Composite Link Settings - Internal DSU menu allows you to configure the composite link for a DSU.
76 DataT alker Owner ’ s Manual The Dial On Demand (DOD)/Disconnect On Inactivity (DOI) option drops DTR to the terminal adapter to disconnect if the inactivity timer has expired and raises DTR to reconnect if the voice/ fax or data channel goes active.
77 Chapter 6 - Menus Composite Link Settings - External Device The Composite Link Settings - External Device menu allows you to configure the composite link for an external device.
78 DataT alker Owner ’ s Manual 6.3 Statistics The Statistics menu allows you display or clear the composite link statistics, or return to the previous menu or to the Main Menu.
79 Chapter 6 - Menus 6.4 Reset Options The Reset Options menu allows you to reset the unit, the data and voice/fax channels, each voice/fax channel, or just the data channel.
80 DataT alker Owner ’ s Manual 6.5.1 Loop T ests The Loop T ests menu provides either a voice loopback or a composite link loopback that depends on the type of link device.
81 Chapter 6 - Menus 6.6 Configure Remote Unit Configuration menu option 5 is dependent on the position of DIP switch SW -5. If DIP switch SW - 5 is in the Open (Up) position (MMV8/16/32), the configuration menu allows for the DataT alker to set parameters to communicate with with other MultiMux products (i.
82 DataT alker Owner ’ s Manual The Unit Source Node option specifies the node number of the local node. This number has to be unique and any number from 0 to 9. Remember that the node number will be used by other nodes. The Data Destination Node option specifies the node number of the remote node.
83 Chapter 6 - Menus Table 6-1. Main Office Installation Step Procedure 1 V oice/Fax - Plug an analog PBX extension into the FXO jack on the back of the Data T alker . RJ1 1 Phone Cable VOICE/F AX CHANNEL 1 FXO Connector DAT A/COMMAND EXTERNAL COMPOSITE RS232C/V .
84 DataT alker Owner ’ s Manual 3 Data Port - Plug the host computer into the Data/Command port and put dip switch 3 up (located on the side of the Data T alker). MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DATA/COMMAND RS232C/V.
85 Chapter 6 - Menus Table 6-2. Home Office Installation Step Procedure 1 V oice/Fax - Plug your telephone into the FXS jack on the back of the Data T alker . MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DATA/COMMAND RS232C/V.
86 DataT alker Owner ’ s Manual 3 Data Port - Plug your PC into the Data/Command port and put dip switch 3 up to exit command mode and enable data mode (located on the side of the Data T alker). MODEM DSU/TA DIAL-UP LEASED DIGITAL VOICE/FAX CHANNEL 1 FXO FXS EXTERNAL COMPOSITE DAT A/COMMAND RS232C/V.
Chapter 7 - T roubleshooting.
88 DataT alker Owner ’ s Manual 7.1 Introduction The DataT alker is designed to be easy to operate and maintain. The procedures in this chapter will help isolate any problem to a specific network component, at which point you will be instructed to call the appropriate personnel or execute commands to adjust operating conditions.
89 Chapter 7 - T roubleshooting 7.3 T est Cables If you are using the DataT alker internal DSU or MMH2834 modem, there are three test cables you can use to check out your system. T wo DataT alker back-to-back test cables allow you to connect your two DataT alkers locally before installing them on either end of a phone line.
90 DataT alker Owner ’ s Manual 7.4 T roubleshooting Guide This troubleshooting guide is designed to help you pinpoint the cause of your problem and correct it as quickly as possible. Because equipment from different manufacturers is typically involved in multiplexer networks, you may encounter “finger pointing” as to who is at fault.
91 Chapter 7 - T roubleshooting Table 7-1. Command Port Troubleshooting Problem Command port device not communication with DataT alker Possible Causes Communications software not installed on command port PC Command port not enabled Bad cable or cable connection Solution 1.
DataT alker Owner ’ s Manual 92 Table 7-2. Composite Link Troubleshooting Internal DSU Problem Composite link down with CD, CTS, XMT , RD and RCV LEDs on Flashing RXT LED Possible Causes Composite link not configured correctly High error rate on communication line DSU clocking configured incorrectly Solution 1.
93 Chapter 7 - T roubleshooting Internal ISDN Terminal Adapter Problem Composite link down with CTS, XMT and RD LEDs on Composite link down with CD, CTS, XMT , RCV and RD LEDs on Flashing RXT LED Poss.
DataT alker Owner ’ s Manual 94 Internal MMH2834 Modem Problem Composite link down with CTS, XMT , and RD LEDs on Composite link down with CD, CTS, XMT , RCV and RD LEDs on Flashing RXT LED Possible.
95 Chapter 7 - T roubleshooting External Composite Link Device Problem Composite link down with CTS, XMT and RD LEDs on Composite link down with CD, CTS, XMT , RCV and RD LEDs on Flashing RXT LED Comp.
DataT alker Owner ’ s Manual 96 Table 7-3 Data Channel Troubleshooting Problem Async Data Channel Channel Device not communicating with DataT alker; composite link up with CD,, CTS, XMT , RCV and RD.
97 Chapter 7 - T roubleshooting Table 7-4. Voice/Fax Troubleshooting Problem V olume levels not sufficient on local voice/fax channel Local telephone goes off-hook and remote telephone does not ring (.
DataT alker Owner ’ s Manual 98 Table 7-4. Voice/Fax Troubleshooting (continued) Problem V oice conversation or fax traffic becomes erratic after changing the remote interface type No communication .
99 Chapter 7 - T roubleshooting 7.5 Composite Link Settings - Internal DSU Table 7-5. Composite Link Settings - Internal DSU Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port.
100 DataT alker Owner ’ s Manual 7.6 Composite Link Settings - Internal ISDN T erminal Adapter Table 7-6. Composite Link Settings - Internal ISDN Terminal Adapter Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port.
101 Chapter 7 - T roubleshooting 7.7 Composite Link Settings - Internal Modem Table 7-7. Composite Link Settings - Internal MMH2834 Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port.
102 DataT alker Owner ’ s Manual 7.8 Composite Link Settings - External Device Table 7-8. Composite Link Settings - External Device Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port.
103 Chapter 7 - T roubleshooting 7.9 Composite Link Statistics Table 7-9. Composite Link Statistics Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker .
104 DataT alker Owner ’ s Manual 7 Comparing Data Blocks T ransmitted with Data Blocks Retransmitted (the number of retransmits needed to get the data through) can indicate a line problem. Comparing Data Blocks Received with Receive Block Errors can indicate the same problem from the other end of the link.
105 Chapter 7 - T roubleshooting 7.10 Data Port Configuration Table 7-10. Data Port Configuration Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker .
106 DataT alker Owner ’ s Manual 7 If the data port is set up as an asynchronous data channel, you should verify all 12 options. Data Port Configuration 1 - Async/Sync: Sync 2 - Speed: 19200 3 - Clo.
107 Chapter 7 - T roubleshooting 7.1 1 V oice/Fax Channel Configuration Table 7-11. Voice/Fax Channel Configuration Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker .
108 DataT alker Owner ’ s Manual Voice/Fax Channel 1 Configuration 1 - Destination Channel : 1 2 - Digitizing Rate : 9600 3 - Output Level Atten. : 12 4 - Input Level Gain : 03 5 - Silence Suppressi.
109 Chapter 7 - T roubleshooting 7.12 Diagnostic T esting Table 7-12. Diagnostic Testing Step Procedure 1 T oggle DIP switch position 3 to the down (closed) position to enable the command port. 2 Connect a terminal or PC running communications software to the DA T A/COMMAND connector on the back panel of the DataT alker .
110 DataT alker Owner ’ s Manual.
Chapter 8 - W arranty , Service and T ech Support.
112 DataT alker Owner ’ s Manual 8.1 Introduction This chapter begins with your DataT alker ’s 2-year warranty . Read carefully the next section, “T ech Support,” if you have questions about or problems with your DataT alker .
113 Chapter 8 - W arranty , Service and T ech Support 8.3 T ech Support Multi-T ech has an excellent staff of technical support personnel available to help you get the most out of your Multi-T ech product. If you have any questions about the operation of this unit, call 1- 800-972-2439.
114 DataT alker Owner ’ s Manual 8.4 The Multi-T ech BBS For customers who do not have Internet access, Multi-T ech maintains a bulletin board system (BBS) that mirrors its FTP site. Information available from the BBS includes new product information, product upgrade files, and problem-solving tips.
115 Chapter 8 - W arranty , Service and T ech Support 6. Select a file transfer protocol by typing the indicated letter , such as Z for Zmodem (the recommended protocol). 7. If you select Zmodem, the file will transfer automatically . If you select another protocol, you may have to initiate the transfer yourself.
116 DataT alker Owner ’ s Manual.
Appendixes.
118 DataT alker Owner ’ s Manual Appendix A - ASCII Conversion Chart CTRL CODE HEX DE C CODE HE X DEC CODE HEX DEC CODE H EX DEC @ NUL 00 0 SP 20 32 @ 40 64 ` 60 96 A SOH 01 1 ! 21 33 A 41 65 a 61 9.
119 Appendix B - RS-232C Interface Specification Appendix B - RS-232C Interface Specification The DataT alker's RS232C interface circuits have been designed to meet the electrical specifications given in the EIA (Electronic Industries Association) RS232C and ITU-T (International T elecommunications Union) V .
120 DataT alker Owner ’ s Manual Appendix C - Cabling Diagrams Channel Cables DCE to Channel Cabling (with EIA pass-through) PIN NO. 1 2 3 4 5 6 7 8 20 22 25 1 2 3 4 5 6 7 8 20 22 25 To DCE Device (Data Communications Equipment, i.
121 Appendix C - Cabling Diagrams Composite Link Cabling PIN NO. 1 2 3 4 5 7 8 15 17 20 25 1 2 3 4 5 7 8 15 17 20 25 To External Synchronous Modem/DSU/ T erminal Adapter Connector CHASSIS GROUND (AA) .
122 DataT alker Owner ’ s Manual RJ-48 Cable for Internal ISDN T erminal Adapter 1 2 3 4 5 6 7 8 T R RJ-48 Cable for Internal DSU 1 2 3 4 5 6 7 8 RT RR { { Receive T ransmit RT RR Frame Ground (AA) .
123 Appendix C - Cabling Diagrams E&M Voice/Fax Channel Cable White-Green Green-White White-Orange White-Blue Blue-White Orange-White Brown-White White-Brown M Input E Output T1 4-Wire Output R 4-.
124 DataT alker Owner ’ s Manual Appendix D - Flow Control Background Flow control refers to techniques used by computer devices and the DataT alker to stop and restart the flow of data between them. Flow control prevents a channel device or DataT alker from receiving more data than it can handle.
125 Appendix E - MMH2834 Modem S-Registers Appendix E - MMH2834 Modem S-Registers Introduction This section describes the MMH2834 memory locations called S-registers , where certain MMH2834 modem configurations are stored. Each S-register is assigned a number (S0, S1, S2, etc.
126 DataT alker Owner ’ s Manual S11 Tone Dialing: Tone Spacing and Duration Unit: 1 m s Range: 1–255, 80–255*, 80–255*** Default: 70, 80*, 80*** Description: S1 1 sets the speed of tone dialing (spacing and tone duration times).
127 Appendix F - MMH2834 Modem Commands Appendix F - MMH2834 Modem Commands F .1 Introduction Before you can enter commands for the MMH2834 internal composite link modem, you must access the modem using the composite link access enable command ( #CLA1 ).
128 DataT alker Owner ’ s Manual TYPE COMMAND DESCRIPTION Configure #L0 Negotiate V42 Mode During Handshake Error #L 1 MNP On/LAPM Of f Correction #L2 LAPM On/MNP Of f (Section F .
129 Appendix F - MMH2834 Modem Commands F . 2 Dialing Action Commands Dial Command D The letter D in a command causes the MMH2834 to dial the telephone number immediately following it. For example, if you enter A TD5551212 and hit RETURN, the MMH2834 dials the number 555-1212.
130 DataT alker Owner ’ s Manual F .3 Dial Modifier Commands Pulse or Tone Dial P T The MMH2834 dials numbers using either pulse or tone dialing, or a combination of both methods. Pulse dialing is a method used by rotary-dial telephones, which involves the timed opening and closing of line relay .
131 Appendix F - MMH2834 Modem Commands Wait for New Dialtone W A W inserted in the dialing command causes the MMH2834 to wait for another dial tone, and not resume dialing until another dial tone is detected.
132 DataT alker Owner ’ s Manual F . 4 Phone Number Memory Commands Storing Phone Numbers D...N A telephone number and command line of up to sixty characters may be stored in the MMH2834’s number memory . As many as ten of these numbers may be stored.
133 Appendix F - MMH2834 Modem Commands F .5 Configuration and Default Storage Commands Store Configuration & S-Register Params. in Non-Volitile Memory & W The MMH2834 can store configuration parameters and S-register values in its non-volatile read/ write Random Access Memory (RAM) memory .
134 DataT alker Owner ’ s Manual F .6 Command Response (Result Code) Commands Echo Command Mode Characters E If the MMH2834 is connected to a full-duplex computer , it may be necessary for the modem to be configured to echo back characters entered while in the command mode in order for them to be displayed.
135 Appendix F - MMH2834 Modem 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 9* CONNECT 2400 1 1* CONNECT 4800 12* CONNECT 9600 13.
136 DataT alker Owner ’ s Manual The MMH2834 also can detect a distant busy signal, if after dialing, it reaches a busy number . This is useful because it allows the modem to immediately abandon a call, rather than wait 45 seconds for a carrier signal that will never come.
137 Appendix F - MMH2834 Modem Commands F . 7 Phone Line Conditioning Commands Enable or Disable Recognition of Remote Digital Loop Signal &T The MMH2834 has several self-test features (covered in Appendix G). The tests are activated with different U commands, such as A TU1 , and so fortF .
138 DataT alker Owner ’ s Manual F .9 Error Correction Commands Y ou can use A T commands to place your MMH2834 one of three V .42 (error correction) modes of operation. V.42 Mode Select #L The V .42 standard implements both MNP Class 3 & 4 and LAP-M error correction methods.
139 Appendix F - MMH2834 Modem Commands Enable/Disable Auto-Reliable Fallback Character $F In Auto-Reliable mode, the modem is given four seconds to establish a Reliable connection.
140 DataT alker Owner ’ s Manual F .10 Compression and Maximum Block Size Commands Data Compression The data compression ( &E14 ) command enables data compression. Maximum Block Size &BS The maximum size of Reliable mode data blocks can be controlled with the &BS command.
141 Appendix F - MMH2834 Modem Commands F .1 1 Speed Conversion Commands Speed conversion is a necessary part of data compression since data must be presented to the modem faster than it can handle data, if data compression is to be effective.
142 DataT alker Owner ’ s Manual Serial Port Baud Rate $SB The $SB command presets the speed of the MMH2834's serial (RS232C) port, in both Originate and Answer modes. Speed conversion allows you to set this serial port baud rate at a fixed speed of up to 1 15,200 bps, regardless of the modem’s transmission speed setting.
143 Appendix F - MMH2834 Modem Commands F .12 Immediate Action Commands Help Screens $H The Help command is designed to give you short explanations on how to use each MMH2834 command. The Help command can be quite useful if your manual is not handy and you are in the middle of a communications session.
144 DataT alker Owner ’ s Manual Listing On-Line Diagnostics L8 The L8 command displays the current on-line CONNECT status status of the MMH2834. This display can be printed and used as a modem status report or as diagnostic information (such as when calling T ech Support).
145 Glossary Glossary A AC (Alternating Current): A power source whose signal crosses a reference voltage (usually called ground or zero). Alternating between a maximum and minimum voltage, AC may also be referred to as a bipolar signal. Contrast with DC.
146 DataT alker Owner ’ s Manual BSC (Binary Synchronous Communications): Also called "bisync", this communications protocol was the first synchronous data format used by IBM. It is still in use, but is rapidly being replaced by IBM's newer Synchronous Data Link Control (SDLC).
147 Glossary De facto standards: A de facto standard is one of two types of voluntary standards recognized by a given market. It is introduced by a single vendor and becomes a standard by its widespread use and acceptance by other vendors.
148 DataT alker Owner ’ s Manual Flow control: The process of regulating the speed at which data enters or leaves a serial port. Software flow control is implemented by communications software or by the user sending predefined characters or packets which are recognized as "pause" and "resume" indicators.
149 Glossary L Leased Line: A private, dedicated communications channel that connects two locations. This connection lasts for the duration of the subscription.
150 DataT alker Owner ’ s Manual PCMCIA (personal computer memory card international association): An organization of U.S. and Japanese companies set up to standardize memory cards and other architecture-independent expansion devices. These cards are typically used in laptop computers.
151 Glossary Synchronous Transmission: The transmission of data which involves sending a group of characters in a packet. This is a common method of transmission between computers on a network or between modems. One or more synchronous characters are transmitted to confirm clocking before each packet of data is transmitted.
152 DataT alker Owner ’ s Manual Index Symbols 2 or 4 Wire (E&M) option .................................... 7 2 2 or 4 Wire option ............................................... 74 A Answer mode ................................................
153 Index Dialtone/Wink (E&M) option ................................ 72 Digital data service (DDS) .................................. 10 Digital service unit (DSU) ................................... 10 Digitizing Rate option ....................
154 DataT alker Owner ’ s Manual Remote Interface T ype option ............................. 72 REN .................................................................... 14 Ringer equivalence number ................................ 14 Rings until modem answers .
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