Black Box 3600 User Manual page 155

DTR State Recognition
The S25 register specifies the amount of time (0-255) in 0.01 second
(10 ms) increments that DTR must stay high or low in order to be
recognized as such. The default value is 5 (0.05 second).
RTS/CTS Delay
The S26 register specifies the amount of time (0-255) in 0.01 second
(10 ms) increments between the RTS signal and the CTS signal. The
default value is 0.
Bit Mapped S27
Bit Value Command Description
1, 0 00 &M
01 &M1
10 &M2
11 &M3
2 0
&L
1 &L1 and
&L2
3 -- --
5, 4 00 &X
01 &X1
10 &X2
11 --
6 1 --
0
7 -- --
Lookback Timer
The S28 register specifies the amount of time in 1.0 minute increments
that the modem will remain in dial backup mode before retrying leased
line mode. A zero will disable automatic lookback to leased line. The
default value is 15 minutes.
Bit Value Command Description
7- 0 0-255 --
S25
S26
Async
Sync data / async dial
Sync data / dial through DTR
Sync data / manual dial
Dial-up line
Leased line
Reserved
Internal clock
External clock
Receive clock
Not used
Enable async DTR dialer
Disable async DTR dialer
Reserved
S28
Time in 1 minute increments (0=disabled)
Modem 3600
Status Registers
10-11