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Black Box MD960A Manual

Black Box MD960A Manual

Secure rack modem
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NOVEMBER 2000
MD960A
MD960A-D48
Secure Rack Modem
CUSTOMER
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
SUPPORT
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
INFORMATION
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC INFORMATION FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when the equipment is...
  • Page 3 SECURE RACK MODEM FCC REQUIREMENTS FOR TELEPHONE-LINE EQUIPMENT 1. The Federal Communications Commission (FCC) has established rules which permit this device to be directly connected to the telephone network with standardized jacks. This equipment should not be used on party lines or coin lines.
  • Page 4 NOM STATEMENT NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
  • Page 5 SECURE RACK MODEM 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.

  • Page 6: Table Of Contents

    4.1 Connecting Power to the Secure Rack Modem ....17 4.1.1 AC-Powered model (MD960A)......17 4.1.2 DC-Powered model (MD960A-D48).

  • Page 7: Chapter Page

    SECURE RACK MODEM Chapter Page 5. Setup and Configuration........24 5.1 Command Mode Access.
  • Page 8 B.1 Calling Black Box........

  • Page 9: Specifications

    SECURE RACK MODEM 1. Specifications General Compatibility—ITU-T V.22 bis (2400 bps) to ITU-T V.34+ (33.6 kbps); Bell: 212/V.22, 103/V.21 Command Set—Connexant Choppiest; Industry-standard AT commands Supports—V.42/MNP ® 2–4 Error Control; V.42bis/MNP 5 Data Compression User Password Directory—Passwords allowed: 100 maximum; Password field: 16 characters, case-sensitive;...

  • Page 10: Introduction

    CHAPTER 2: Introduction 2. Introduction 2.1 General Use the Secure Rack Modem for applications that require secure, dial-up access to console ports on rack-mounted equipment. It can recognize up to 100 passwords, track activity for each password, and create a log of successful and/or unsuccessful access attempts.

  • Page 11: Description

    SECURE RACK MODEM 2.2 Description 2.2.1 F RONT ANEL Figure 2-1. Front panel. 1. ON: Lights when power is applied to the modem. 2. RDY: Flashes to indicate that the modem is ready to receive calls or enter the command mode. 3.

  • Page 12: Back Panel

    CHAPTER 2: Introduction 2.2.2 B ANEL Figure 2-2. Back panel (DC version shown). 1. Power input: (DC unit shown) The DC version includes a dual-bus terminal block for -48-VDC operation and a ground screw. The AC version includes an IEC-32 inlet for connection to a three-wire (grounded) power cord (supplied with the modem).

  • Page 13: Features

    SECURE RACK MODEM 7. Modem port: For connection to the secure device. The modem will protect dialup access to this device by requiring a password or calling the user back at a predefined number. Appendix A.2 describes the Modem port interface. 8.

  • Page 14: Getting Started

    Connect an appropriate power source to the modem. The modem is available in both AC- and DC-powered versions. • AC model (MD960A): Set the voltage selector switch (located on the modem’s back panel) to the appropriate voltage. Connect the supplied power cable to the receptacle on the modem’s back panel, then connect the plug to a suitable...

  • Page 15: Communicating With The Secure Rack Modem

    SECURE RACK MODEM To connect your PC to the modem’s console port: 1. Attach a standard null-modem cable to a COM port on your PC. Make certain to connect to the COM port that is used by your communications program (for example, ProComm). 2.
  • Page 16 CHAPTER 3: Getting Started Secure Rack Modem Version 1.11 Site: (undefined) COMMANDS Display Help Screen /C View Audit Log View/Set General Parameters /U Utilities View/Set Modem Parameters /X Exit/Disconnect Edit Password Directory View Password Directory Modem Type: V2.200-V34_AGF_DP1 Reset String: Init String: AT&C1&D2E0Q1V1M1S0=1&Q%C3 Hang-Up String:...
  • Page 17 SECURE RACK MODEM 2. View/Set Modem Parameters: Type /M and press [Enter] to display the Modem Parameters menu. You’ll use this menu to select communication parameters for the SRM’s internal modem as described in Section 5.3. Press [Esc] to return to the main menu. 3.

  • Page 18: Hardware Installation

    Only operate the modem with the type of power source indicated on the instrument nameplate. If you are not sure of the type of power service available, please contact your local power company. 4.1.1 AC-P (MD960A) OWERED ODEL Set the voltage selector switch (located on the modem’s back panel) to the appropriate voltage.

  • Page 19: Setup Switches

    SECURE RACK MODEM 4.2 Setup Switches The setup switches, located on the back panel, select the default settings for Modem Port baud rate, flow control, parity, rings to answer, and enable or disable ARQ/Compression, the modem speaker, and the modem’s Security Mode. NOTE You can also select operating values for all of these parameters via the modem’s configuration menus.

  • Page 20: Default Bits And Parity (Sw4)

    CHAPTER 4: Hardware Installation Table 4-2. Flow control switch settings Default Flow Control Format RTS/CTS (Hardware)* DOWN X-ON/X-OFF (Software) *Default setting. 4.2.3 D (SW4) EFAULT ITS AND ARITY Setup switch #4 selects the default bits and parity setting for both the internal modem and the serial modem port.

  • Page 21: Default Rings To Answer (Sw5)

    SECURE RACK MODEM 4.2.4 D (SW5) EFAULT INGS TO NSWER Setup switch #5 selects the default “Rings to Answer” setting. The Rings to Answer setting can also be defined via the Modem Parameters menu (/M). If the modem is reset to default parameters, the Rings to Answer feature will return to the default setting selected by setup switch #5.

  • Page 22: Default Modem Speaker Status (Sw7)

    CHAPTER 4: Hardware Installation 4.2.6 D (SW7) EFAULT ODEM PEAKER TATUS Setup switch #7 selects the default enabled/disabled status for the modem speaker. You can also use the Modem Parameters menu (/M) to enable or disable the speaker. If you reset the modem to default parameters, this feature will return to the setting selected by setup switch #7.

  • Page 23: Initialize The Unit To Default Settings

    SECURE RACK MODEM 4.3 Initialize the Unit to Default Settings If you change setup switch settings, new parameters will not take effect until the modem is initialized. CAUTION After initialization, menu-selected parameters will return to the settings specified by the setup switches. Also, the password directory will be erased.

  • Page 24: Telco Line

    CHAPTER 4: Hardware Installation configure your installation via modem, you won’t need to connect a PC to the console port. 4.4.3 T ELCO Use a standard RJ-11 phone cable to connect your phone line outlet to the telco line port on the modem’s back panel. If the modem’s telco line port includes two RJ-11 connectors, connect your phone line to the connector labeled “wall”...

  • Page 25: Setup And Configuration

    SECURE RACK MODEM 5. Setup and Configuration This section describes how to select modem configuration parameters. The default modem parameters are intended to fit the requirements of most applications. Please review the default settings to determine if you must change any parameters.

  • Page 26: Access Via Modem

    CHAPTER 5: Setup and Configuration Secure Rack Modem Version 1.11 Site: (undefined) COMMANDS Display Help Screen /C View Audit Log View/Set General Parameters /U Utilities View/Set Modem Parameters /X Exit/Disconnect Edit Password Directory View Password Directory Modem Type: V2.200-V34_AGF_DP1 Reset String: Init String: AT&C1&D2E0Q1V1M1S0=1&Q%C3 Hang-Up String:...

  • Page 27: The General Parameters Menu

    SECURE RACK MODEM If the modem does not respond, check the following: • Modem Communication Parameters: The Secure Rack Modem’s internal modem and your remote communications program must be set to use the same communication parameters. You can select the default modem communication parameters using setup switches #1 through #8 (factory setting is 9600 bps, no parity, 8 data bits, one stop bit).
  • Page 28 CHAPTER 5: Setup and Configuration NOTE The System Password is case-sensitive. (It can be up to 16 characters, and the default is SUPER). 2. System Dial Back #: When defined, the modem will dial this number before allowing modem access to the Command mode. When a caller contacts the modem, it sends a password prompt.
  • Page 29 SECURE RACK MODEM 8. Password Attempts: The number of password attempts that will be accepted when a user attempts to access the Secure Rack Modem via modem. If this number is exceeded, the Secure Rack Modem will disconnect and terminate the modem connection (default is 3).

  • Page 30: The Modem Parameters Menu

    CHAPTER 5: Setup and Configuration 13. Dial Back Delay: Determines how much time will elapse between each dial back attempt (default is 30 seconds). When you have finished selecting parameters from the General Parameters menu, press [Esc] to return to the main Help screen. Menu-selected parameters will be stored in the modem’s non-volatile memory.
  • Page 31 SECURE RACK MODEM NOTE Automatic baud rate sensing is disabled. This allows the modem to function with devices that do not send an AT command string. 2. Bits/Parity: The operating data bits and parity bits for the Secure Rack Modem’s internal modem and serial modem port. If you initialize the unit to default settings, the bits and parity will return to the default setting currently selected by setup switch #4 (determine the default by setup switch #4;...

  • Page 32: Save Parameters

    CHAPTER 5: Setup and Configuration 9. Speaker: Enables/disables the modem speaker (default is ON). 10. Error Control: Enables/disables the error control function (default is ON). 11. Compression: Enables/disables the data compression function (default is ON). 12. Reset String: If necessary, this item can be used to redefine the modem reset string.

  • Page 33: The Password Directory

    SECURE RACK MODEM 6. The Password Directory When the modem is properly configured, each inbound caller will be prompted to enter a password before accessing the secure device. The password directory is a listing of all valid user passwords, user names, and their associated dial back numbers.

  • Page 34: Add Name/Password

    CHAPTER 6: The Password Directory 6.1 Add Name/Password To add new user passwords and names to the password directory, go to the Edit Password Directory menu (/E), type 1 (Add Name/Password) and press [Enter]. The modem will display a submenu that contains the following items: 1.

  • Page 35: Edit/Delete From List

    SECURE RACK MODEM After each password is saved, the Secure Rack Modem will redisplay the Add Name/Password menu. To continue to add names and passwords, repeat steps one through four in this section. If you have finished adding passwords, press [Esc] to return to the Edit Password Directory menu.

  • Page 36: Edit/Delete From Search

    CHAPTER 6: The Password Directory NOTE The password that appears at the bottom of the list is the selected password. 4. Edit password: To edit the selected password, type the number for the field that you wish to change and follow the instructions in the submenu. a) For example, to change the dial back number for the selected password, type 3, press [Enter], and then key in the new number as described in the submenu.
  • Page 37 SECURE RACK MODEM 2. The modem will display a menu which offers the option to search by name or search by password. a) To search by name, type 1 and press [Enter]. To search by user password, type 2 and press [Enter]. b) If the desired name or password is found, the SRM-100 will display the Edit/Delete Name/Password menu as shown in Figure 6-2.

  • Page 38: Viewing The Password Directory

    CHAPTER 6: The Password Directory 6.4 Viewing the Password Directory After you have added several names and passwords, you may wish to view the Password directory in order to verify that data has been correctly entered. To display a screen which lists all currently defined user names and user passwords, type /D and press [Enter].

  • Page 39: Zero Activity Counters

    SECURE RACK MODEM 3. Dial Back Number: The dial back number currently defined for this name. NOTE If the Dial Back Number has not been defined, this field will read “undefined.” 4. Activity: The number of times that this password has been used since the last time the activity counter was reset.

  • Page 40: Operation

    CHAPTER 7: Operation 7. Operation 7.1 Secure Rack Modem Operating Modes The modem provides three separate operating modes: the User mode, the Command mode, and the Unsecured mode. 7.1.1 U The User mode is activated when a caller enters a user password at the login prompt.

  • Page 41: The System Password

    SECURE RACK MODEM 7.2.1 T YSTEM ASSWORD The system password protects modem access to the Secure Rack Modem’s Command mode. The Command mode allows system administrators to invoke commands to select configuration parameters, edit the password directory, and review connection activity. The modem lets you define one system password via the General Parameters menu (/G).

  • Page 42: Password On Dial Back

    CHAPTER 7: Operation defined via the General Parameters menu (/G), and the user dial back numbers are defined via the Edit Password Directory menu (/E). NOTE When user dial back numbers are defined, the modem can be configured to perform a dial back for some user passwords, while granting immediate access to other user passwords.

  • Page 43: Viewing The Audit Log

    SECURE RACK MODEM confirmation prompt provides one last chance to terminate a command before it is executed. In some cases, you may wish to execute a command or perform a task without being prompted for confirmation. To suppress the confirmation prompt, include the “,Y”...
  • Page 44 CHAPTER 7: Operation NOTE You can only view the Audit log via the Secure Rack Modem command mode. To display the Audit log, access the Command mode as described in Section 5.1, then type /C and press [Enter]. Events are listed in reverse chronological order, with the most recent attempts appearing at the top of the list.

  • Page 45: The Utilities Menu

    SECURE RACK MODEM • Exit Command: The caller entered the /X command to exit from the Secure Rack Modem Command mode. • Invalid Password: The caller did not enter a valid password within the allowed number of password attempts. • Dialing Back: The Secure Rack Modem ended the connection in order to perform a dialback operation.

  • Page 46: Zero All Activity Counters

    CHAPTER 7: Operation 7.5.1 Z CTIVITY OUNTERS This command is used to reset the counters that track connection activity for each password. To zero all activity counters, access the Utilities menu, then type 1, press [Enter], and follow the instructions in the submenu. To view the password activity counters, access the modem’s Command mode as described in Section 5.1, type /D and press [Enter] to display the Password directory.

  • Page 47: Send Test Message

    SECURE RACK MODEM Secure Rack Modem will not immediately reset modem parameters. The unit will reset all other parameters, wait for the caller to disconnect, and then reset modem parameters. 7.5.5 S ESSAGE This option allows the system administrator to send a test message via the console port or telecommunications line.

  • Page 48: Pass-Through Mode (Console-Modem)

    CHAPTER 7: Operation 7.5.8 P HROUGH ONSOLE ODEM The Pass-through mode allows communication between the device connected to the console port and the Secure Rack Modem’s internal modem. When the Pass-through mode is active, the console port can access the modem in order to place outbound calls, or invoke any of the AT commands listed in Chapter 9.

  • Page 49: Saving And Restoring Parameters And Password Directory

    SECURE RACK MODEM 8. Saving and Restoring Parameters and Password Directory After the modem has been properly configured and the Password directory has been defined, configuration parameters and the Password directory can be saved as an ASCII text file. Later, if the configuration is accidentally altered, you can upload the file to automatically reconfigure the unit so you won’t have to manually assign each parameter and password.

  • Page 50: Restoring Saved Parameters

    CHAPTER 8: Saving and Restoring Parameters and Password Directory 8.2 Restoring Saved Parameters Once menu-selected parameters and the Password directory have been saved, the parameters file can be uploaded to the modem to quickly configure the unit without the need to manually enter each parameter and password. To restore saved parameters, proceed as follows: NOTE When the “Upload Parameters”...

  • Page 51: Modem Command Set (At Commands)

    SECURE RACK MODEM 9. Modem Command Set (AT Commands) In addition to the Secure Rack Modem’s menu-driven configuration functions, the internal modem will also accept standard Rockwell format AT commands. This section describes the AT command set and lists the function of each command. The AT command set is used to select advanced modem configuration parameters, which are not available via the Secure Rack Modem’s menuing system.

  • Page 52: Modem Status

    CHAPTER 9: Modem Command Set (AT Commands) 9.2 Modem Status The Secure Rack Modem’s internal modem can generate a status screen, which lists currently selected settings for most of the AT commands, the contents of most of the S-registers, the two stored modem profiles, and four stored phone numbers. To display the modem status screen, access the internal modem’s Command mode as described in Section 9.1, then type AT&V and press [Enter].
  • Page 53 SECURE RACK MODEM • The maximum command length is 40 characters. This does not include the AT prefix, carriage returns, or spaces. • Defaults are marked with an asterisk (*). Command Function/Options Attention command. Required prefix for all modem commands. Not required for the A/ command or +++ command.
  • Page 54 CHAPTER 9: Modem Command Set (AT Commands) Command Function/Options & Wait for credit card dial tone before continuing with dial string. If the bong is not detected within the time specified by register S7, the modem will abort the dial sequence, go on-hook, and generate an error message.
  • Page 55 SECURE RACK MODEM Command Function/Options Enable/Disable Automode. Disable automode detection (equivalent to setting the +MS<automode> subparameter to 0). A subsequent handshake will be conducted as specified by register S37, or if S37=0, according to the most recently sensed DTE speed. Enable automode detection (equivalent to setting +MS<automode>...
  • Page 56 CHAPTER 9: Modem Command Set (AT Commands) Command Function/Options Sr=n Set register r to value n. See list of S-registers in Chapter 10. Display current value of register r. Sets tone dial as default. Forces tone dialing until the next P dial modifier or P command is received.
  • Page 57 SECURE RACK MODEM Command Function/Options Enable/disable long space disconnect. Disable long space disconnect. Enable long space connect. Soft reset and restore profile. Restores stored profile 0. Restores stored profile 1. Escape sequence. Switches from on-line mode to Command mode while preserving the connection with the on-line modem. &Cn Controls Data Carrier Detect (DCD) signal.
  • Page 58 CHAPTER 9: Modem Command Set (AT Commands) Command Function/Options &Jn Telephone jack control. *&J0 No function. Included for compatibility. &J1 No function. Included for compatibility. &Kn DTE/Modem flow control. &K0 Disable flow control. *&K3 Enable RTS/CTS. &K4 Enable X-ON/X-OFF. &K5 Enable transparent X-ON/X-OFF.
  • Page 59 SECURE RACK MODEM Command Function/Options &Tn Test and diagnostics. Modem will perform selected test and diagnostic function. NOTE Tests can only be run in asynchronous mode, with error correction disabled. &T0 Terminate test in progress. &T1 Execute local Analog Loopback test. &T3 Execute Local Digital Loopback test.

  • Page 60: S-Registers

    CHAPTER 10: S-Registers 10. S-Registers The S-Registers are used to store modem configuration parameters, display modem status, and initiate modem test and diagnostic functions. In order to invoke commands to change or display the contents of the S-Registers, you must first access the modem Command mode as described in Section 9.1.
  • Page 61 SECURE RACK MODEM Register Range Default Function 0 - 127 Carriage-return character. Stores the ASCII code for the carriage-return character. The default value is 013 (normal carriage return). 0 - 127 Line-feed Character. Stores the ASCII decimal code for the line-feed character. The default value is 010 (normal line feed).
  • Page 62 CHAPTER 10: S-Registers Register Range Default Function 1 - 255 Lost carrier to hang-up delay. Sets the length of time (in tenths of a second) the modem will wait after loss of carrier before hanging up. If this value is set lower than the value contained in S09, a loss of carrier will always result in disconnection.
  • Page 63 SECURE RACK MODEM Register Range Default Function — — Not used. — — Modem test options. Option Val Descrip Cmd Local Analog Disabled Loopback Enabled &T1 Not Used Local Digital Disabled Loopback Enabled &T3 Status Bit Loopback Off In progress Initiate Remote Disabled Digital Loopback 1...
  • Page 64 CHAPTER 10: S-Registers Register Range Default Function — — Not Used. — — Not Used. — — Bit-Mapped Options. Option Val Descrip Cmd Telephone Jack 0 RJ-11 &J0 RJ-12 &J1 Not Used RTS/CTS CTS/RTS &R0 &R1 always true Ignore &D0 Modem &D1 to Cmd.
  • Page 65 SECURE RACK MODEM Register Range Default Function — — Bit-mapped options Option Val Descrip Cmd Speaker Volume Medium L2 High Speaker Control 0 Speaker M0 On until carrier detected Always On On until carrier M3 detected, but Off while dialing Result Codes See X0 See X1...
  • Page 66 CHAPTER 10: S-Registers Register Range Default Function — — Bit-Mapped Options. Option Val Descrip Cmd Obey request Disabled &T5 from remote Enabled &T4 modem for remote digital loopback test Assumed DTE 300 bps rate 600 bps 1200 bps 2400 bps 4800 bps 9600 bps 19.2 kbps...
  • Page 67 SECURE RACK MODEM Register Range Default Function 0 - 255 Sync RTS/CTS delay. When in synchronous mode, the modem will ignore a change in RTS/CTS status for the time interval (in hundredths of a second) defined in this register. — —...
  • Page 68 CHAPTER 10: S-Registers Register Range Default Function 0 - 255 — Disconnect inactivity timer. Sets the length of time (in 10-second intervals) that the modem will stay on-line before disconnecting when no data is sent or received. In error-correction mode, any data transmitted or received will reset the timer.
  • Page 69 SECURE RACK MODEM Register Range Default Function 0 - 7 V.42 negotiation failure treatment. This register is read when the S48 register equals 128 or if an attempted V.42 connection fails. These fallback options are initiated immediately upon connection if S48 = 128. S36=0 Modem disconnects.
  • Page 70 CHAPTER 10: S-Registers Register Range Default Function 0 - 255 Delay before forced hang up. This register specifies the delay (in seconds) between the modem’s receipt of the H command to disconnect (or on-to-off transition of DTR if the modem is set to follow the signal), and the disconnect operation.
  • Page 71 SECURE RACK MODEM Register Range Default Function — — S82 is included for compatibility purposes only. Changing this register will have no effect. 0, 4, 5, 8, — Connection failure cause code. When the 12, 13, modem issues a NO CARRIER result code, or 14 a value is written to this S register to help determine the reason for the failed...
  • Page 72 CHAPTER 10: S-Registers Register Range Default Function —- Extended result codes. The bits in this register can be set to override some of the Wn command options. A bit set to 1 in this register will enable the corresponding result code regardless of the Wn setting.

  • Page 73: Modem Result Codes

    SECURE RACK MODEM 11. Modem Result Codes When AT commands are invoked, the modem will respond with either terse (numeric) or verbose (text) result codes. The result code format is set using the Modem Parameters menu (/M), or the ATVn command. Result codes can also be completely suppressed by enabling the Quiet Mode via the Modem Parameters menu or the ATQn command.
  • Page 74 CHAPTER 11: Modem Result Codes Verbose Terse Description Response Response CONNECT 2400 Connection made at 2400 bps. CONNECT 4800 Connection made at 4800 bps. CONNECT 9600 Connection made at 9600 bps. CONNECT 7200 Connection made at 7200 bps. CONNECT 12000 Connection made at 12,000 bps.
  • Page 75 SECURE RACK MODEM Verbose Terse Description Response Response Fax detected. (Fax/data answer mode.) DATA Modem detected. (Fax/data answer mode.) CARRIER 300 Carrier rate of 300 bps. CARRIER 1200 Carrier rate of 1200 bps. CARRIER 2400 Carrier rate of 2400 bps. CARRIER 4800 Carrier rate of 4800 bps.
  • Page 76 CHAPTER 11: Modem Result Codes Verbose Terse Description Response Response COMPRESSION: The modem has connected in MNP CLASS 5 class 5, and COMPRESSION message reporting has been enabled. COMPRESSION: The modem has connected in V.42bis, V.42BIS and COMPRESSION message reporting has been enabled. COMPRESSION: The modem has connected without data NONE...

  • Page 77: Appendix A. Interface Descriptions

    SECURE RACK MODEM Appendix A. Interface Descriptions A.1 Console Port Figure A-1. Console port interface (DTE).

  • Page 78: Modem Port

    APPENDIX A: Interface Descriptions A.2 Modem Port Figure A-2. Modem port interface (DCE).

  • Page 79: Appendix B. Troubleshooting

    B.1 Calling Black Box If you determine that your Secure Rack Modem is malfunctioning, do not attempt to alter or repair the unit. It contains no user-serviceable parts. Contact Black Box at 724-746-5500. Before you do, make a record of the history of the problem. We will be able to...
  • Page 80 © Copyright 2000. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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