Multi-Tech Systems BA-Series S15 Callback Time Delay, S16 Callback Attempts, S25 DTR Dropout Time

Chapter 5 - S-Registers

S15

Callback Time Delay

Unit:	Seconds
Range:	10-255
Default:	20
Description:	S15 defines the time delay between Callback attempts after initial passwords have
	been exchanged between modems.

S16

Callback Attempts

Unit:	1 Attempt
Range:	1-255
Default:	4
Description:	S16 defines the number of attempts allowed after initial passwords have been
	exchanged between modems.

S17

Changing Break Time

Unit:	10 mSec.
Range:	0-2.5 sec
Default:	250
Description:	S17 defines the break time (space) sent to the local PC. The default is set for a 25 to
	250 mSec break. The break time can be changed in 10 mSec increments by
	increasing or decreasing the value of S17.

S24

PBX/CBX Disconnect Drop Time for DSR/CTS/CD

Unit:	50 mSec.
Range:	0-255
Default:	20
Description:	Some PBX and CBX phone systems require the modem’s DSR, CTS, and/or CD
	signal(s) to behave in a certain manner when calls are disconnected. The modem’s
	&R, &S, and &C commands cause the modem to drop these signal(s) for a specified
	time period upon disconnect, and then bring the signal(s) up again. S24 defines the
	length of time that the signals drop. The default setting of 20 results in a one second
	drop time, which is what most PBX/CBX systems with this requirement need.

S25

DTR Dropout Time

Unit:	100 mSec.
Range:	0, 1 through 255
Default:	0
Description:	S25 defines the amount of time that DTR must be dropped before the modem
	disconnects. Typically, a disconnect occurs when DTR is dropped for 50
	milliseconds or more. This dropout time can be increased, up to a maximum of 25.5
	seconds. The S25 unit value for zero is the default value of 50 mSec. For values
	from 1 through 255, the unit value is 100 mSec.

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