MT5656ZDX Multi-Tech Systems, MT5656ZDX Datasheet - Page 26

• Manufacturer Part Number: MT5656ZDX
• Description: MODEM V.92 DATA/FAX
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® ZDXr

Specifications of MT5656ZDX

• Data Format: V.92
• Interface: RS-232
• Voltage - Supply: 9V
• Mounting Type: Desktop
• Package / Case: 5.7" L x 4.3" W x 1.0" H (145mm x 109mm x 25mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 881-1020

Operation in Voice
Examples:
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F)
Mode:Line-In-Use (enabled by AT-STE=1, AT-STE=3, AT-STE=5, or AT-STE=7):
Remote Hang-up (enabled by AT-STE=4, AT-STE=5, AT-STE=6, or AT-STE=7):
Case 1: Modem off-hook, Remote Hang-up
If the modem is connected (off-hook) and the remote modem/server goes hangs up, the
central office may issue a line polarity reversal. If a line polarity reversal is detected, the
modem will drop the call and respond with NO CARRIER. The reason for hang-up can be
determined by #UD or by S86=25. A line reversal can also be simulated by simply pulling
out the telephone line during a connection.
This feature does not apply in voice mode.
Extension Pickup (Enabled by AT-STE=2, AT-STE=3, AT-STE=6, or AT-STE=7)
If the modem is off-hook and an extension goes off-hook, the modem issues a <DLE>P to
the DTE. The application software then hangs up the line (VLS=0).
Remote Hang-up (Enabled by AT-STE=4, AT-STE=5, AT-STE=6, or AT-STE=7).
If the modem is off-hook and the remote user goes on-hook, the modem issues a <DLE>P
to the DTE. The application software then hangs up the line (VLS=0).
User is talking on an extension and the modem tries to dial
AT-STE=7
ATDT555-1212
LINE-IN-USE.
The line is not in use and the modem tries to dial
AT-STE=7
ATDT555-1212
Modem goes off-hook
CONNECT
An extension is off-hook but there is silence on the line and the modem tries to dial
AT-STE=3
ATDT555-1212
Modem goes off-hook
NO DIAL TONE
Modem is connected in data mode and remote modem goes on-hook
AT-STE=4
ATDT555-1212
CONNECT
NO CARRIER Remote modem drops line
ATS86=?
025
Modem is in answer machine mode and an extension goes off-hook
AT-STE=2
AT+FCLASS=8
OK
<DLE>h Local handset on-hook
<DLE>R Ring
AT+VLS=1
OK
AT+VSM=1,8000
AT+VTX Starts to play greeting message
<DLE>P User picks up extension
<DLE>! DTE send abort to end playback
AT+VLS=0 DTE hangs up.
Continued on next page.
Chapter 2 – AT Commands
26