3460 Fast’R

Running Diagnostic Tests

This section describes loopback, busy out, and retrain tests, which analyze local- and remote-modem performance and the telephone line to assist you in isolating network problems. These tests can be initiated:

With AT commands from an attached PC or terminal

With commands from Fast’RVu

With commands from a Motorola network management system

IMPORTANT: Run one test at a time. Tests interrupt network data.

Table 5-3. Running Diagnostic Tests

 

 

AT

Test

Description

Command

 

 

 

Local Analog

Tests local-modem transmit and receive

AT&T1

Loopback (LAL)

circuitry

 

 

 

 

LAL Pattern

Tests local-modem circuits

AT&T8

 

 

 

Remote Digital

Tests local- and remote-modem circuits

AT&T6

Loopback (RDL)

and the telephone line

 

 

 

 

Local Digital

Tests local-modem telephone lines and

AT&T7

Loopback (LDL)

circuits.

 

 

 

 

Busy Out

Lets the modem appear busy to

ATH1

 

incoming calls.

 

 

 

 

Retrain

Lets you manually retrain the local and

ATO1

 

remote modems

 

 

 

 

Terminate

Terminates a test in progress

AT&T0

 

 

 

LAL, LDL, and RDL tests using the EIA leads are not supported.

Parameters and options shown shaded gray vary by country. For your country’s options, refer to the 3460 Fast’R Reference Guide .

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Motorola 3460 manual Running Diagnostic Tests, Test Description Command