Remote Digital Loopback - Epson ESC/VP21 User Manual

Fax/data modem

Hide thumbs Also See for ESC/VP21:

Table of Contents

Command:

Test result:

Result code:

4.3 Remote Digital Loopback

Fig. 4-3 Data Path for Remote Digital Loopback

The remote digital loopback test cheeks the integrity of the local computer or terminal, the

local modem, the telephone line, and the remote modem, During the test message

is sent from the local computer through the local modem to the remote

modem and looped through the remote digital loop inside the remote modem back to

an internal error counter as shown in Figure 4-3.

During this test, data is not transmitted to the remote computer or terminal. If

characters are looped correctly, the local computer or terminal, the local modem,

4 - TESTING

AT&T0< CR> (ends the test)

012 (12 errors were found during the test)

Table of Contents