Epson ESC/VP21 - Page 68

Fig. 4-5 Data Path for Local Digital Loopback
To start a local logical loopback first make sure that the modem is on-line with a
remote modem. The modem can be in either the originating or answer modem.
Example - To implement a local digital loopback test
Escape:
+++
Result Code: OK
Command:
AT\N1 <CR>
ATS18= 0 &T3<CR>
4 - TESTING
61