Specifications

DM562P
Operation Manual & AT Command Set
Integrated Data/Fax/Voice/Speakerphone Modeml
Preliminary 21
Version: DM562P-MA-P01
July 12, 2000
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.
Register S27: Bit-mapped Register.
Bit-mapped register S27 lets you control modem
transmission mode and line type.
Bit Function
0 0: Dial up line (&L0) – default.
1: 2W Leased line (&L1).
1-7 Undefined.
Register S30: Value of the voice inactivity timer.
S30 = 0 Voice inactivity timer off (default).
S30 = 1 – 255 This is the period of time (in sec), which
if expired causes the modem to hang
up the telephone line if it is offhook and
no data has passed during the period.
When there is an inactivity time out with
#CLS=8, the modem always forces
#CLS=0 and #BDR=0.
Register S36: V.42 negotiation fallback.
Register S36 defines the type of connection attempted
by the modem and the action to take if the attempt fails: