+A8M - Send V.8 Menu Signals
This command, applicable only in DTE-controlled V.8, directs the modem to send a V.8 CM
or JM signal using the specified hexadecimal coded string. If the modem can decode the menu
octet string, and if it cannot implement a specified feature, the modem reports an ERROR
final result code, but stays in V.8 operation awaiting another command.
Syntax
+A8M=<hexadecimal coded CM or JM octet string>
+A8I: - CI Signal Indication
This indication is issued by an answering modem, if +A8E,<v8a>
0, to indicate detection
of a V.8 CI signal, and report the recovered Call Function octet(s).
Indication Syntax
+A8I:<v8cf><CR>
Defined Values
<v8cf> A hexadecimal code octet representation of those Call Function
octet(s). +A8I:0 indicates that the modem timed out waiting for CI.
Example
+A8I:0 The modem timed out waiting for CI.
+A8I:X YYY
+A8C: - Calling Tone Indication
This indication is issued by an answering modem, if +A8E,<v8a>
0, to indicate detection of
1100 Hz or 1300 Hz calling 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.
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.
Example
+A8C: 1 For CNG tone detected.
+A8A: - Answer Signal Indication
This indication is issued by a calling modem, if +A8E <v8o>
0, to indicate detection of an
answering signal.
Indication Syntax
+A8A:<type><CR>
Defined Values
<type><CR> Decimal number which indicates the corresponding detected answer signal.
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.
Example
+A8A:1 For V.8 ANSam signal (2100 Hz with amplitude modulation) detected.
