Datasheet

AT Command Set INSYS Modem 336/56k 4.1 (UL)
Command Description
AT-STE=<n> Priority Circuit for Modems with Phones Connected in Series
The INSYS Modem 336/56k 4.1 (UL) gives a phone connected in series priority, to make
sure it interferes as little as possible with the usage of the phone connection. (see Chap-
ter 5.10)
Monitoring Functions:
1) Detecting a busy phone line
During a dial-up attempt, the model detects the busy phone line. (LINE IN USE).
2) Going off-hook on account of a telephone connected in series
If a telephone connected in series goes off-hook during an existing modem connec-
tion, the modem will immediately terminate the connection.
The telephone is connected to the line and receives a dialing tone.
3) Remote terminal connection abort
When the remote terminal aborts a connection, the modem will
immediately hang up.
Command Function 1 Function 2 Function 3
AT-STE=0 -- -- -- (default)
AT-STE=1 √ − -- --
AT-STE=2 -- √ --
AT-STE=3 √ √ --
AT-STE=4 -- -- √
AT-STE=5 √ -- √
AT-STE=6 -- √ √
AT-STE=7 √ √ √
ATT Switching on inband signaling
Starting with this command, each dial up is performed with the tone dialing method,
until an ATP or ATDP command switches it back to pulse dialing.
AT-TRV Phone Line Voltage Measurement (Tip Ring Voltage)
Use the command AT-TRV to measure the phone line voltage (Tip Ring Voltage). The re-
sult is yielded in volt. For an existing connection the voltage range will be 5V – 12V. Oth-
erwise the voltage is higher than 20V. If the voltages are lower than 2V, no phone line is
connected.
66 July 06