A8C: - Calling Tone Indication; A8A: - Answer Signal Indication - Conexant H08-15355F Reference Manual

3.2.7.4 +A8C: - Calling Tone Indication

This indication is issued by an answering modem, if +A8E,<v8a>
tones, or sigC signals, as defined in T.30, V.8 and in V.25.
Indication Syntax
+A8C: <type><CR>
Defined Values
<type> Decimal number which indicates the corresponding detected calling tone.
Example
+A8C: 1 For CNG tone detected.

3.2.7.5 +A8A: - Answer Signal Indication

This indication is issued by a calling modem, if +A8E <v8o>
Indication Syntax
+A8A:<type><CR>
Defined Values
<type><CR> Decimal number which indicates the corresponding detected answer signal.
Example
+A8A:1 For V.8 ANSam signal (2100 Hz with amplitude modulation) detected.
1118
Command Reference Manual
0 The modem concluded answer tone transmission without reporting detection of any
calling tone.
1 CNG tone (1100 Hz) detected.
2 1300 Hz V.25 data modem calling tone detected.
3 sigC signal: V.32/V.32 bis AA tone detected.
0 The modem timed out waiting for an answering signal.
1 V.8 ANSam signal (2100 Hz with amplitude modulation) detected.
2 V.25 answer tone (2100 Hz) detected.
3 V.25 answer tone with phase reversals detected. (Note)
4 sigA signal: V.21 Ch2 with flags (e.g., T.30 control preamble) detected.
5 sigA signal: V.22bis USB1 signal detected.
6 sigA signal: V.32bis AC signal detected.
7 sigA signal: V.34 ToneA signal detected.
0, to indicate detection of 1100 Hz or 1300 Hz calling
0, to indicate detection of an answering signal.
Conexant
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