E F Johnson Company 2425M80 Benutzerhandbuch

Draft 02 - Sep 1 2015

8-1

Section8

Data Features

Advances in digital communications allows for new data features and services using the 
radio link. This section describes the data features and services available for the Viking 
mobile radio.

P25 packet data transmission capability is available with Viking mobile radios. A Data 
option switch can be programmed to toggle the data mode ON and OFF (or the menu 
option can be used).

The P25 Packet Data mode allows a radio to act as a packet data modem for a remote 
application connected to the radio through an RS-232 or Serial Line Internet Protocol 
(SLIP) connection. The SLIP connection requires an Ethernet port.

Three P25-compliant conventional data operating modes are supported:

• Direct Radio to Radio mode - In this mode the radio will transmit data directly to 

another radio without any involvement of fixed network equipment.

• Repeater mode - In this mode, the radio will transmit data on the inbound channel of a 

repeater. The repeater will retransmit the data on the outbound to another radio listening 
on the outbound channel.

• FNE data mode – In this mode, the mobile radio transmits data to a fixed network 

computer connected to the FNE.