Silicon Laboratories SI2493/57/34/15/04 - Manual (Page 227)

AN93
Rev. 1.3 227
Table 143 lists the definitions of result codes typically expected in an SIA session.
Table 143. Definitions of Result Codes Typically Expected in an SIA Session
Result Code Meaning Remarks
OK Ready for next command
(or ACK) When it comes as a response to the +F2 command,
“OK” means ACK
CONNECT Physical handshake is completed. In SIA FSK mode, CONNECT means that the
modem is in the data passing state ready to receive
or transmit data.
Note: there is an extra space character between the
letter T and the carriage return delimiter.
In V.32bis mode, CONNECT is followed by the DCE
connection speed: e.g., CONNECT 14400
RING Incoming ring Modem should answer the incoming call; the host
can command this with ATA.
NO CARRIER Connection is terminated
ERROR Invalid AT command
(or NACK) As a response to the +F2 command, “ERROR”
means NACK; otherwise, it means invalid com-
mand.
BUSY Dialed number is Busy.