ZyXEL Communications COMET 336, Руководство пользователя

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60 Voice Operation
When in Voice Receive Mode, the modem sends the proper shielded <DLE> code when
dial tone or busy tone is detected. The modem stays in Voice Receive Mode, however,
until the DTE issues a key abort to force Online Voice Command Mode. The DTE must
issue the H command if it wishes to hang up.
7.2.9 Mode Switching
Voice to Fax
If the modem is in Online Voice Command Mode (i.e., it has gone off-hook with
#CLS=8 in effect), the DTE can attempt a fax handshake by setting #CLS=1, followed
by the A or D command corresponding to fax receive or send. This has the effect of
beginning a fax Class 1 handshake (see #CLS command).
Unsuccessful Fax Connection Attempt to Voice A fax handshake which does not
succeed, attempted as the result of the DTE modifying the #CLS setting from voice (8)
to fax (1), does not result in the modem hanging up, allowing the DTE the flexibility of
commanding a switch back to Voice Mode with #CLS=8.
Voice to Data
If the modem is in the Online Voice Command Mode, the DTE can attempt a data
handshake by setting #CLS=0 followed by the A or D command. This has the effect of
beginning a Data Mode handshake according to the current Data Mode S-register and
command settings.
Unsuccessful Data Connection Attempt to Voice
A data handshake which does not succeed, attempted as the result of the DTE modifying
the #CLS setting from voice (8) to data (0), does not result in the modem hanging up,
allowing the DTE the flexibility of commanding a switch back to
Voice Mode with #CLS=8.
7.2.10 Caller ID
The modem supports Caller ID by passing the information received in Bell 202 FSK
modulation to the DTE after the first RING detect. The modem supports both formatted
and unformatted reporting of Caller ID information received in ICLID (Incoming Call
Line ID) format as supported in certain areas of the U.S. and Canada. The DTE enables
this feature via the #CID command.
Voice AT Command Set
Command Options Function & Description Ref.
+FCLASS=n Service Class ID.
n=0 * Select Data Mode.
n=1 Select Facsimile Class 1.
n=2 Select Facsimile Class 2.
n=8 Select voice mode.