ROIP302 Series User menu
6.13
Online Upgrade
The Online Upgrade selection is the first item in the Tools menu. Please check regularly with your
supplier or our website (
www.dbltek.com
) for the latest firmware release.
7
Initiating a Cellular Call
The model RoIPx02G and RoIPx02GM have built-in GSM module to enable voice communication
with the radio channels that belong to the same group. This means that a telephone user can dial in
to the RoIP to conduct a voice call with the radio channels. A radio terminal equipped with DTMF
capability can also dial out to the telephone network to conduct a voice call. The ability to
communicate with other voice networks makes the RoIP302 a truly “Cross-platform Gateway”.
Below are the procedures to initiate a voice call.
1. Initiate a call from the telephone network to the radio
Use a PSTN or Cellular phone to call the phone number of the SIM card that is installed on the
RoIP302. Once the RoIP302 answers the call, it generates a voice prompt to ask the caller to enter
the
GSM IN Password
(described in Section 7.7) and then press the “#” key. The default password
is “123”. Once the correct password is entered, RoIP302 generates double beeps as confirmation.
The caller can then hear the voice communications of the group that the GSM Channel is assigned to.
Please note that only one way voice communication is allowed. The caller should wait for a silent
period before enabling the voice channel to talk. To enable the voice transmission, the caller needs
to press the “*” key to enable the PPT control before talking. Once the caller completes the
conversation, he/she should press the “#” key to disable the PTT control in order to deactivate the
voice transmission. Therefore, the Radio party can talk back. This mechanism simulates the PTT
method used in Radio Communication.
Please note that when the “*” or “#” key is pressed, the caller should hear a confirmation tone
(double beeps). If the caller does not hear this tone, he/she should dial the digit again. The caller
can just hang up the phone to end the call.
2. Initiate a call from the radio to the telephone network
To initiate a call via the GSM channel, the radio user should press and hold the PTT button to
activate the transmission and the dial the following sequence.
<password> + “#” + <phone number> + “#”
www.dbltek.com
