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10

February 2002

3920-A2-GK47-10

Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product or included in the manual.

2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product

and to protect it from overheating, these slots and openings must not be blocked or covered.

3. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on

the power cord.

4. Do not attempt to service this product yourself, as opening or removing covers may expose you to

dangerous high voltage points or other risks. Refer all servicing to qualified service personnel.

5. General purpose cables are provided with this product. Special cables, which may be required by the

regulatory inspection authority for the installation site, are the responsibility of the customer.

6. When installed in the final configuration, the product must comply with the applicable Safety Standards

and regulatory requirements of the country in which it is installed. If necessary, consult with the
appropriate regulatory agencies and inspection authorities to ensure compliance.

7. Input power to this product must be provided by one of the following: (1) a UL Listed, CSA Certified

power source with a Class 2 or Limited Power Source (LPS) output for use in North America, or (2) a
certified power source with a Safety Extra Low Voltage (SELV) output for use in the country of
installation.

In addition, if the equipment is to be used with telecommunications circuits, take the following
precautions:

– Never install telephone wiring during a lightning storm.
– Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
– Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at
   the network interface.
– Use caution when installing or modifying telephone lines.
– Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote 
   risk of electric shock from lightning.
– Do not use the telephone to report a gas leak in the vicinity of the leak.

Summary of Contents for 3920Plus

Page 1: ... Models 3920Plus and 3921Plus Technical Reference Manual Document No 3920 A2 GH30 NOTE Do not download firmware with a release number lower than 4 0 to a Model 3920 A2 xxx modem Model 3920Plus modems support a wide range of modulation schemes and offer control using either AT commands the diagnostic control panel DCP or the optional COMSPHERE 6700 and 6800 Series Network Management Systems NMS The...

Page 2: ...your geographic area COMSPHERE 3920Plus Modem The Model 3920Plus singleport modem is a standalone modem Figure 1 capable of either 4 wire 2 wire leased line or dial operation This modem is controlled using either AT commands or the DCP The DCP consists of a liquid crystal display LCD three function keys four directional keys and a row of 13 LED status indicators For a better understanding of DCP o...

Page 3: ...ine configurations RJ11C for dial permissive configurations One 8 position 8 wire modular cord for leased backup purposes Model 3920Plus Modem Installation Before installing your modem read the Important Safety Instructions on page 10 Make sure your installation site is clean and well ventilated Allow space around the modem for installing cables and telephone cords and make sure the modem is locat...

Page 4: ...es to the Model 3920Plus Modem Figure 2 illustrates the Model 3920Plus modem cable connections For pin assignments refer to Appendix C in the Technical Reference Manual 97 14677 01 DB 25 P CONNECTOR FOR DATA TERMINAL EQUIPMENT OPERATION SUB MINIATURE 4 POSITION PLUG FOR NETWORK MANAGEMENT SYSTEM OPERATION POWER SUPPLY 6 POSITION PLUG FOR PERMISSIVE DIAL NETWORK OPERATION 8 POSITION PLUG FOR LEASED...

Page 5: ...2 3 Connect the power module to an ac power outlet Leased Line Network Connection Use the following steps to connect the leased line network interface 1 Insert the 8 position 8 conductor modular plug into the jack labeled LEASED Figure 2 2 Insert the other end of the modular cord into the leased line network interface 3 If the Model 3920Plus has a backup line follow the steps listed in the Dial Ba...

Page 6: ... Feature Number 3600 F3 300 Installation Instructions Document No 3610 A2 GZ45 for a description of the 3600 Hubbing Device Installation for the 3920Plus is the same as for the 3610 DSU 2 Connect the 3600 Hubbing Device to the network management system Figure G 5 in Appendix G of the Technical Reference Manual Removing and Replacing the Model 3920Plus Modem To remove and replace the Model 3920Plus...

Page 7: ...e modem passes the power up self test configure it for operation using one of the six factory preset configurations The Model 392xPlus modems have six factory preset templates that contain the most commonly used configuration options straps for Synchronous Leased Answer or Originate Asynchronous Leased Answer or Originate Trellis Multipoint Control or Tributary Asynchronous Dial Synchronous Dial a...

Page 8: ...ode 4 Choose Function appears and displays the Edit and Save functions 5 Press the F3 key Save to save the new factory preset configuration to one of three configuration areas Active Saved Customer 1 or Customer 2 These three configuration areas are nonvolatile memory locations Active Saved contains the most recently saved changes to any configuration options In the event of power loss the modem r...

Page 9: ...p Loc_Digital_Loop Pattern Singleport mode only 97 14651 04 Speaker Reset Data_Stream EIA_LEDS Make_Busy or RemoveMakeBusy Service_Line or DiscServLine Download_Code DownloadSoftware VF_Thresh_Update 3921Plus only Edit StrapGroup Set_Access_Ctrl Reset_Security Admin Password EditPassWdTable Set_Answer_Sec Set_Orig_Secur Set_Admin_PsWd DTE_Interface DTE_Dialer Line_Dialer Leased_Line Test Security ...

Page 10: ...able Safety Standards and regulatory requirements of the country in which it is installed If necessary consult with the appropriate regulatory agencies and inspection authorities to ensure compliance 7 Input power to this product must be provided by one of the following 1 a UL Listed CSA Certified power source with a Class 2 or Limited Power Source LPS output for use in North America or 2 a certif...

Page 11: ...GENCES DU RÈGLEMENT SUR LE MATÉRIEL BROUILLEUR DU CANADA Government Requirements and Equipment Return Certain governments require that instructions pertaining to modem connection to the public switched telephone network be included in the installation and operation manual Specific instructions are listed in the following sections United States Notice to Users of the Public Switched Telephone Netwo...

Page 12: ...riffs Contact the state public utility commission public service commission or corporation commission for information 9 The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic device to send any message via a telephone fax machine unless such a message clearly contains in a margin at the top or bottom of each transmitted page or on the f...

Page 13: ... each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device to prevent overloading The termination on a loop may consist of any combination of devices subject only to the requirement that the total of the Load Numbers of all devices does not exceed 100 If your equipment is in need of repair refer to the procedure in Government Requ...

Page 14: ... 3920 A2 GK47 10 3920 A2 GK47 10 ...

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