Appendix A AT Commands
37
parameter of this command is stored in bits 4—6 of register S22.
X<value> Commands
Command Description
X0
Busy detection is disabled; blind dialing (no dial tone
detection) is enabled. The following result codes are supported:
• OK • CONNECT • RING • NO CARRIER
•
ERROR
X1 Busy detection is disabled; blind dialing (no dial tone
detection) is enabled. The following result codes are supported:
• OK •
RING • NO CARRIER • ERROR
• CONNECT <RATE>
X2
Busy detection is disabled; blind dialing is disabled. The
dialing cannot be conducted unless a dial tone is detected. If
dial tone is not detected within the time specified by register
S6, the NO DIAL-TONE result code will be reported. The
following result codes are supported:
•
OK • RING • NO CARRIER • ERROR
• NO DIALTONE • CONNECT <RATE>
X3
Busy detection is enabled; blind dialing is enabled. The
following result codes are supported:
• OK • RING • NO CARRIER • ERROR
• BUSY • CONNECT <RATE> • BLACKLISTED
X4 Busy detection is enabled; blind dialing is disabled. The
dialing cannot be conducted unless a dial tone is detected. If
dial tone is not detected within the time specified by register
S6, the NO DIAL-TONE result code will be reported. The
following result codes are supported:
• OK • RING • NO CARRIER • ERROR
• NO DIALTONE • BUSY • CONNECT <RATE>
• DELAYED • BLACKLISTED • WARBLE
