Digi 90031300 manual S18 Modem Test Timer, S19 AutoSync Protocol Support Mode, Hdlc protocol

S18 Modem Test Timer

Sets the length of time, in seconds, that the modem conducts a test (commanded by &Tn) 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.

Appendix F 133