12-2
ES Series Models II/III Portable Radio Operating Manual
Data Features
Note
Since the radio uses the side port for the MDP Interface, a “Data Modes” button must be
programmed to enable the PPP interface.
12.1.2 Context Activation
For the radio to access data service on a trunking system, it must be a valid user on the
system and it must be affiliated to an RF site. Once this is accomplished, the radio must
request data services from the trunked system through the process of context activation; a
data registration of the radio with the system. Context activation is initiated from the radio.
In an EFJohnson Technologies radio, context activation is automatically initiated when the
user selects a P25 trunking system with either data registration enabled or OTAR enabled.
During a context activation, the radio attempts to access a packet data channel (PDCH) at
the site and send it its request for data services. If the context activation is successful, the
radio will receive a response containing a IP address. This IP address will be used by the
radio as a source IP address for all inbound data messages sent, and is used by the host
application as the destination IP address for all outbound data messages. If for some
reason the context activation fails, the radio will not be allowed to use data services on the
trunked system. If a PPP link is established between the portable computer and radio
without the radio context activated, any data transmitted by the computer to the radio is
ignored.
12.1.3 PPP Link Establishment
To begin data transmissions from an application running on a portable computer, a data
connection must first be established between the computer and the radio (with data
capability enabled). This is accomplished by creating a new network connection using the
Microsoft Windows Operating System.
Note
The following screen shots are derived from Windows XP.
The network connection screen can be accessed through the control panel. Click the create
a new connection link.
Summary of Contents for 5100 ES
Page 2: ......
Page 4: ......
Page 14: ...viii ES Series Models II III Portable Radio Operating Manual List of Figures ...
Page 16: ...viii ES Series Models II III Portable Radio Operating Manual List of Tables ...
Page 26: ...1 6 ES Series Models II III Portable Radio Operating Manual Features ...
Page 74: ...4 18 ES Series Models II III Portable Radio Operating Manual Radio wide Features ...
Page 162: ...7 26 ES Series Models II III Portable Radio Operating Manual Multi Net Features ...
Page 168: ...8 6 ES Series Models II III Portable Radio Operating Manual Miscellaneous ...
Page 174: ...10 4 ES Series Models II III Portable Radio Operating Manual Passwords ...
Page 184: ...11 10 ES Series Models II III Portable Radio Operating Manual Secure Communication Encryption ...