- Research In Motion Pager User Manual

Tools guide — RIM 950 Wireless Handheld simulator 33
Developer’s Guide – RIM 950 Wireless Handheld™
• Guidelines for writing a host-side application to simulate the
network
This section describes the network simulation in general terms.
The control panel consists of two parts: reception and transmission. The
Reception section of the dialog box allows you to set whether or not the
modem is in coverage. The Transmission section allows you to set the
success rate for packet transmission.
Reception section
In the Reception section; you may choose to have the modem out of
coverage or in coverage; if you have the modem in coverage, you can
control the Received Signal Strength Indicator (RSSI) by sliding the
control bar back and forth. Note that the signal strength varies from -120
dBm to -50 dBm (dBm is dB with respect to milliwatts). A signal of -120
dBm is extremely weak, and the modem typically loses coverage before
reaching this number. A signal of -50 dBm is stronger than you are likely
to see on the actual network.
You may check for data packets immediately; many networks implement
a power save mode, where the network periodically indicates which
modem to send to. To conserve power, modems only turn on their
receivers during the periods they are being sent data. To simulate this,
the program only checks for packets every 10 seconds. You can force a
check for packets by selecting the button.
This window also indicates the current status and the number of data
packets received.
The following statuses are possible in the Active Status field:
State Description
Radio Off The radio is turned off.
Turning Off The radio is in the process of turning off.
Stop Reception Radio reception is stopped
(
RadioStopReception has been called).
Active The modem is in coverage on the network.