Paradyne 6800 manual Digital Test dit, Digital Test Input Form, Abbreviation dit

COMSPHERE 6800 Series Network Management System

Digital Test (dit)

(Disruptive)

Use the dit command to test the transmitters and receivers in specified DATAPHONE II or COMSPHERE control and tributary devices, as well as the primary data transmission facility connecting them. Digital testing of multiple links consisting solely of COMSPHERE devices or solely of DATAPHONE II devices is supported by this command. Digital testing of multiple links consisting of a mix of COMSPHERE and DATAPHONE II devices is not supported by this command.

For APL modems, the control device generates and transmits to the tributary device a user-specified number of 100K bit blocks comprised of 511 bit pseudo-random sequences. The tributary loops the blocks back to the control device where they are checked for errors. The test fails if ten or more errors are detected in one block.

For DATAPHONE II DSUs, a timed test pattern is looped through the tributary DSU back to the control DSU which checks the received data for errors. If one or more errors are found in the received test pattern, the tributary DSU fails the test.

For 3600 Series DSUs, a timed 511-bit test pattern is looped through one tributary device and back to the control device which checks the received data for errors. The total seconds in error and bits are displayed as test results.

For DATAPHONE II DDD modems, this test causes the specified local modem to send a timed test consisting of alternating zeros and ones to a remote modem that loops the message back to the local modem. The local modem checks the message for errors. Five or more errors constitute a failure.

For most commands, NMS enables you to specify the destination for the command's results and schedule its execution. If the last page of the input form cannot accommodate the Destination for results and Schedule execution fields, an additional page is provided. For a complete description of these fields, refer to Chapter 1, Introduction.

Access Level: Data Technician, Manager, System Administrator

Abbreviation: dit

Alternate: dt

Restrictions: None

Routine:Yes

Schedule:Yes

Related Commands: None

Digital Test Input Form

A common input form is used to request test parameter information for digital test execution to APL modems, DSUs, and DDD modems. However, within the input form you can specify information for only a single service class of devices. The digital test is sent to the specified devices that are of the service class indicated by the test parameter information. A sample Digital Test input form is shown in Figure 2-29.

2-110 January 1997 6800-A2-GB31-20