Motorola 3460 User Manual

5-10

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.

Local Analog 
Loopback (LAL)

Tests local-modem transmit and receive 
circuitry 

AT&T1

LAL 

Pattern Tests 

local-modem 

circuits

AT&T8

Remote Digital 
Loopback (RDL)

Tests local- and remote-modem circuits 
and the telephone line

AT&T6

Local Digital 
Loopback (LDL)

Tests local-modem telephone lines and 
circuits.

AT&T7

Busy Out

Lets the modem appear busy to 
incoming calls.

ATH1

Retrain

Lets you manually retrain the local and 
remote modems

ATO1

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.