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0 = Disables detection of the messages
1 = Directs the modem to search for V.8 bis messages.
<supp_delay>, Decimal number which disables or enables the modem to insert a 1.5
second delay between the transmitted V.8 bis signal and the subsequent V.8 bis
message, if any.
0 = Disables insertion of a 1.5 second delay.
1 = Enables insertion of a 1.5 second delay.
Reporting Current or Selected Values
Command: +A8T?
Response: +A8T: <signal>[,<1st message>][,<2nd message>][,< sig_en
>][,<msg_en>][,<supp_delay>]
Example: 1,XXXX,YYYY,1,1,1,
Reporting Supported Range of Parameter Values
Command: +A8T=?
Response: +A8T: (<signal> range),(max length of message 1),(max length of message
2),(<sig_en> range)
Example: +A8T: (0-10) (????),(????),(0-1),(0-1)
3.2.7.4 +A8I: - CI Signal Indication
This indication is issued by an answering modem, if +A8E,<v8a> ¹ 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
3.2.7.5 +A8C: - Calling Tone Indication
This indication is issued by an answering modem, if +A8E,<v8a> ¹ 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.
3.2.7.6 +A8A: - Answer Signal Indication
This indication is issued by a calling modem, if +A8E <v8o> ¹ 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
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