ZyXEL Elite 2864 User Guide - Page 202
The DCE detects silence.
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DTE AT+VSM=4 DCE → AT+VLS=2 AT+VTX ← OK → ← VCON → ← CONNECT OK AT+VSM=2 → AT+VRX ← OK → ← CONNECT ← ← s → ← ← ← OK (The DTE ought to delete this silence file.) AT+FCLASS=0 → ← OK ATA → Switches to data mode and answers the data call... Description Selects 4-bit ADPCM for the greeting message. Connects to the line. Starts to play the greeting message. Returns to the command state. Changes to 2-bit ADPCM for recording. Starts recording. The DCE detects silence. Stops recording. The DCE delivers the remaining data. Returns to the command state. Switches to data mode Tries to handshake in data mode. Note: If a modem data tone is detected - a e response -, the modem should be switched to data mode. 16-26
16–26
AT+VSM=4
→
Selects 4-bit ADPCM for
the greeting message.
←
OK
AT+VLS=2
→
Connects to the line.
←
VCON
AT+VTX
→
Starts to play the greeting
message.
←
CONNECT
<DATA>
→
<DLE><ETX>
→
←
OK
Returns to the command
state.
AT+VSM=2
→
Changes to 2-bit AD-
PCM for recording.
←
OK
AT+VRX
→
Starts recording.
←
CONNECT
←
<DATA>
←
<DLE>s
The DCE detects silence.
<DLE><!>
→
Stops recording.
←
<DATA>
The DCE delivers the re-
maining data.
←
<DLE><ETX>
←
OK
Returns to the command
state.
(The DTE ought to delete this silence file.)
AT+FCLASS=0
→
Switches to data mode
←
OK
ATA
→
Tries to handshake in
data mode.
Switches to data mode and answers the data call…
Note:
If a modem data tone is detected - a <DLE>e response -, the mo-
dem should be switched to data mode.
DTE
DCE
Description