Remote Digital Loopback With Self-Test - Epson ESC/VP21 User Manual

Fax/data modem

Hide thumbs Also See for ESC/VP21:

Table of Contents

4.4 Remote Digital Loopback with Self-Test

The remote digital loopback with self-test checks the integrity of the local modem,

telephone line, and the remote modem. In this test the modem activates an internal

test pattern generator. A test data stream is sent over the telephone line to the remote

modem and looped through a remote digital loop to an internal error counter in the

local modem as shown in Figure 4-4.

Fig. 4-4 Remote Digital Loopback with Self-test

To perform the remote digital loopback with self-test, first make sure that the modem

is on-line to the remote modem. The modem can be either in the originating mode or

in the answer mode.

Example - The test timer is set and the test is performed with no errors

4 - TESTING

Table of Contents