Technical Reference
58
&Tn
Begins test modes
&T0
Ends testing
&T1
Analogue Loopback
&T2
Reserved
&T3
Local Digital Loopback
&T4
Enables Remote Digital
Loopback
&T5
Prohibits Remote
Digital Loopback
&T6
Initiates Remote Digital
Loopback
&T7
Remote Digital with self-test
and error detector
&T8
Analogue Loopback with self-
test and error detector