Specifications

DM562AP
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modem
26
Preliminary
Version: DM562AP-MA-P01
February 2, 2004
3,4= 0 Modem ignores the DTR signal (&D0).
1 Modem enters command mode after ON-to-
OFF DTR transition (&D1).
2 Modem hangs up after ON-to-OFF DTR
transition (&D2) – default.
3 Modem resets after ON-to-OFF DTR transition
(&D3).
5 = 0 CD signal always on (&C0).
1 CD signal on when a remote carrier signal is
present (&C1) – default.
6 = x Undefined.
7 = 0 Long space disconnect turned off (Y0) –
default.
1 Long space disconnect turned on (Y1).
Register S22: Bit-mapped Register
Bit-mapped register S22 lets you control internal
speaker and the modem responses.
Bit Function
-------------------------------------------------------
0,1= 0 Speaker volume off (L0).
1 Low speaker volume (L1).
2 Medium speaker volume (L2) – default.
3 Loud speaker volume (L3).
2,3= 0 Speaker off (M0).
1 Speaker on until carrier detected (M1) – default.
2 Speaker always on (M2).
3 Speaker on until carrier detected but off during
dialing (M3).
4,5,6=0 Hayes™ Smartmodem compatibility (X0).
4 Include CONNECT XXX responses (X1).
5 Same as 4 plus dial tone detection (X2).
6 Same as 4 plus BUSY response and blind
dialing (X3).
7 Same as 6 plus dial tone detection (X4) –
default.
7 = 0 US make/break ratio (&P0) – default.
1 UK and Hong Kong make/break ratio (&P1).
Register S23: Bit-mapped Register.
Bit Function
1,2,3= 0 Use 0-300bps DTE data rate.
2 Use 1200bps DTE data rate.
3 Use 2400bps DTE data rate.
4 Use 4800bps DTE data rate.
5 Use 9600bps DTE data rate.
6 Use 19200bps DTE data rate.
7 Use 38400bps or above DTE data rate.
4,5= 0 Use even parity.
1 Use space parity.
2 Use odd parity.
3 Use mark or none parity.
6,7= 0 Turn off guard tone (&G0) – default.
1 Turn off guard tone (&G1).
2 Use 1800 HZ guard tone (&G2).
Register S25: Data Terminal Ready Delay.
When Modem is on-line, it will ignore a Data Terminal
Ready signal lasting less than the value of this register.
In this mode, the values for this register are 0 to 255 in
hundredths of a second, and the default value is 0.05
seconds. If you will be entering synchronous mode after
dialing asynchronously, this register determines how
long the modem waits before looking for the Data
Terminal Ready signal. This lets you detach the
asynchronous terminal and connect a synchronous
terminal while remaining in the Data Mode. In this
mode, the values for this register are from 0 to 255
seconds and the default value is 5.
Register S26: Request To Send-to-Clear To Send
Delay.
This register affects synchronous operation only and
applies only when you are using the &R0 command.
This register determines how long the modem waits to
turn on the Clear To Send signal after a Request To
Send OFF-to-ON transition in 10 ms increment. The
default value is 1, although this register accepts values
from 0 to 255.