Specifications

MODEM 157

5.5 MODEM COMMUNICATIONS

1. TRANSFERABLE ITEMS IN MODEM COMMUNICATION

• SPEC DATA

• PRINT FORMAT

• AUTO JOB OPERATION

• ALL ITEM DATA

2. GENERAL SPECIFICATIONS

2-1. INPUT/OUTPUT INTERFACE RS-232C SERIAL PORT

2-2. ASYNCHRONOUS DATA TERMINAL

2-3. TRANSMISSION SPEED 2400 BPS

2-4. BIT CONSTRUCTION START BIT : 1

INFORMATION BIT : 8

STOP BIT : 1

VERTICAL PARITY : NONE

2-5. COMMANDS REQUIRED FOR MODEM COMMUNICATION

• HAYES STANDARD AT COMMAND SET

• AA AUTOMATIC ANSWER (REF. TO THE FOLLOWING TABLE)

• FULL DUPLEX OVER BOTH DIAL-UP 2 WIRE LINES IN MORE THAN 2400

BPS

• CCITT V.22bis /V.32 /V.32bis

AT COMMANDS REQUIRED FOR MODEM COMMUNICATION WITH DC-150

COMMAND FUNCTION

DT DIAL COMMAND (TONE DIAL)

DP DIAL COMMAND (PULSE DIAL)

E1 CHARACTER ECHO ENABLED

Q1 RETURN RESULT CODE

V0 RETURN RESULT CODE AS NUMBERS

SO=? SET S-REGISTER SO TO VALUE

X3 DIAL TONE DETECTION DISABLED

&C1 TRACK ACTUAL STATE OF REMOTE MODEM’S

CARRIER

&D0 IGNORE DTR (DATA TERMINAL READY) SIGNAL

NOTE)

IT IS POSSIBLE TO SELECT THE DIAL CALL (TONE DIAL/ PULSE

DIAL AT ADDRESS 01 IN MODEM SPEC. IN MAINTENANCE MODE.