User manual

Appendix F 133
S18 Modem Test Timer
Sets the length of time, in seconds, that the modem conducts a test (commanded by &T
n
) before returning to the
command mode. If this register value is zero, the test will not automatically terminate; the test must be terminated
from the command mode by issuing an &T0 or H command.
Range: 0-255 seconds
Default: 000
S19 AutoSync Protocol Support Mode
Default = (1Ah) (26d) (00011010b)
Bit 0 Reserved
Bit 1 0 Bisync protocol
1 HDLC protocol
Bit 2 0 Address detector disabled
1 Address detector enabled
Bit 3 0 NRZI bit coding
1 NRZ bit coding
Bit 4 0 Selects mark idle
1 Selects flag idle
Bit 5-7 Reserved
S20 AutoSync HDLC Address
Default = 255
In HDLC mode: HDLC address.
In Bisync mode: definition of Bisync sync character.