Test Function

93

Testing procedure

Computer

Modem

Transmission

Reception

Local/analog/loopback test

Testing procedure

Transmitter

Receiver

To conduct the loopback test:

1Enter the following AT commands to set the modem to normal mode:

AT&F\N0

Receive OK

2Enter the following AT commands to select the local/ analog/loopback test:

AT&T1

You are now in the online state.

3Enter characters from the keyboard as desired.

The characters you enter should be displayed on the screen.