Operating Manual 6175.4760.02 – 01 4.167
M3SR Series 4100 Selecting the Service Mode
4.8.3.3 Selecting the Service Mode
By means of softkey 'Service' the operator can select voice or data transmission.
Softkey Type Description
Listbox 1. Press softkey 'Service'.
2. Select desired service from listbox.
3. Press 'ENT' to confirm.
The new service is now effective.
Possible values:
• INT_VOCODER (Internal Vocoder)
• DATA_TERM 1 (DT1, Data Terminal 1)
•IP_DATA
• IP_REBRO
• VOICE_O_DATA
• VOICE_O_IPD
The 'Service' function is used to select the
transmission mode (Voice or Data).
INT VOCODER
Transmission is started by initiating any PTT
key line.
DATA_TERM_1
The radio automatically changes to Tx mode
as soon as data to be transmitted is detected
at the RS232 interface.
IP_DATA
The radio automatically changes to Tx mode
as soon as IP data is detected at one of the IP
interfaces (Ethernet or PPP (point-to-point
protocol) via serial interface). With this mode it
is possible to connect two wired IP networks
via an air IP net.
IP_REBRO
This service is used only for relay and rebroad-
cast stations. This way, it is possible to con-
nect waveform nets using the Voice over IP
Data service. See sect. 5.3.2.2 Rebroadcast /
Relay Mode for more details.
VOICE_O_DATA
Voice transmission can be initiated by any
PTT key line. Data transmission is started
when data is detected at the RS232 interface
(X5, DATA socket) if no voice PTT is active.
If a PTT signal is activated during data trans-
mission, the data link is interrupted and a voice
link is established to the selected station(s).
Voice has priority over data. The called sta-
tion(s) automatically detects the service type
and reacts adequately.
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