XStream
‐
PKG
‐
T™
Telephone
RF
Modem
–
Product
Manual
v5.x00
[2006.02.24]
3.
Telephone
Module
Operation
3.1.
Telephone Module Configuration
The Telephone Module features a rich set of AT commands that allow flexibility in operations. On
power-up or reset, the Telephone Module operates in command mode and will accept AT
commands either from an RS-232 serial cable or from another MaxStream RF Modem (PKG-R,
PKG-U, etc.) over a wireless link.
Refer to the Telephone Module Configuration Example section [p25] for programming examples.
Hardware Setup Option 1 – Serial Port Method:
Configurations made through the serial line [Figure 3-01]
©
2006
MaxStream,
Inc.,
Confidential
and
Proprietary
20
1. Connect an RS-232 cable to the DB-9 connector of the PKG-T RF Modem.
2. Move DIP Switch 1 (Speaker Control) to the ON (up) position and DIP Switch 2
(
control) to the OFF (down) position. This will configure the Data Path
Switch to connect the DB-9 and Telephone Module.
3. Assert
(+10V). Most serial communications software (including MaxStream’s X-CTU
Software) will assert
when the serial com port is opened.
Figure
3
‐
01.
Hardware
Setup
‐
Serial
Port
Method
Hardware Setup Option 2 – Wireless Link Method
Configurations made via a remote PKG RF Modem [Figure 3-02]
1. Detach cable from the DB-9 connector (Absence of the cable will automatically de-assert
(-10V RS-232 level)).
2. Connect wirelessly to the RF Modem (AT Commands are sent from a PC to a device such as
the PKG-R RS-232/485 RF Modem via a serial port. The PKG-R Modem then relays
commands over-the-air to the PKG-T Telephone RF Modem.)
Figure
3
‐
02.
Hardware
Setup
‐
Wireless
Link
Method
