Reference Guide for the Model XM128 ISDN Digital Modem
D-8 Status Registers and Result Codes
S24= Bitmapped register.
0-1 0-3 0-3 Ring volume control, in increments
of 1 in decimal value N0-3
2 0 0 Ignore S21. 1-2 when PHONE 1
keypad is dialed.
4 4 Do not ignore S21-2 when PHONE
1 keypad is dialed.
3 0 0 Ignore S21. 1-2 when PHONE 2
keypad is dialed.
8 8 Do not ignore S21-2 when PHONE
2 keypad is dialed.
5-4 Speaker volume control, in
increments of 16 in decimal value L0-3
S25= 0-255 0-FF Specify the time dela y that DTR
signal needs to be off before it
isrecognized, in 10 ms units. If
S25=0, the delay time is set to
4ms.
+000
S27= Bitmapped register
3-5 0 0 Flow control is disabled. &H0
24 18 Hardware (RTS/CTS) flow control. &H3
32 20 Software (XON/XOF F) flow
control. &H4
40 28 Reserved. &H5
S29= 0-
39 0-
39 Sets default dial PHONE number
pointer; uses AT&Zn=s to store
PHONE numbers.
+000 *D
S31= 0-255 0-FF Holds the ASCII decimal value of
the XON. +017
S32= 0-255 0-FF Holds the ASCII decimal value of
the XOFF. +019
TableD-4. Extended S-registers ATSn=x (continued)
Command Bit Decimal Hexadecimal Function and
description Default or
reference