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COMSPHERE 3900 Series Modems
2-6 September 1998 3910-A2-GN32-40
Selecting Factory Configuration Options
After the modem passes the power-up self-test, configure it for operation using one of the six
factory preset configurations.
The 391x Series 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, and UNIX Dial hardware network configurations. Your modem ships from the
factory with the Synchronous Leased (Answer) default configuration options stored in memory. If
Synchronous Leased (Originate), Asynchronous Leased (Answer or Originate), Trellis Multipoint
(TMp) (Control or Tributary), Async Dial, Sync Dial, or UNIX Dial is more appropriate for your
configuration, then you must change the factory setting using either the modem’s DCP or the AT
command set as described in the following sections.
The purpose of having preset configurations is so that you can have a “head start” in getting your
modem operating and reducing the amount of time required to configure your modem. For a better
understanding of DCP operation and factory preset configuration options, refer to Chapter 5, DCP
Configuration.
Using the Diagnostic Control Panel (DCP)
The DCP’s liquid crystal display (LCD) consists of two 16-character lines which display modem
status, control functions, and configuration options as well as indicating your location in the
Top-Level menu tree (Appendix A).
To change a factory template from the Sync Leased preset configuration using the DCP, perform
the following steps:
1. Press the function key below Configure to select the Configure branch.
The LCD now displays Ld EditArea frm.
2. Press the
key until Factory comes into view, then press the F1 key to display the
factory preset configurations.
Factory preset configurations are Sync Leased, Async Leased, TMp (Trellis Multipoint),
Async Dial, Sync Dial, and UNIX Dial. If Sync Leased or Async Leased is selected, you
must choose either Answer or Originate mode. If TMp is selected, you must choose either
Control or Trib (Tributary) mode.
3. Press the
key until the appropriate factory preset template appears on the LCD, and
press the corresponding function key to select your choice. (For certain factory templates
you will also need to choose the appropriate mode.)
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 retrieves these configuration options. Customer 1 and Customer 2
are user-defined configuration areas.)
The LCD now displays Sav EditArea to.