MDS 05-4846A01, Rev. H
SD Series Technical Manual
61
Any combination of the three VRC numbers may be entered in the selec-
tion fields. Figure 31 illustrates the relationship between the VRC set-
tings and the routing of data between units.
Invisible place holder
Figure 31. Virtual Radio Channel (VRC) Concept
Terminal Server
COM1/2
Configuration
The radio’s Terminal Server feature allows IP addressing of the COM1
and COM2 serial interface ports. Data from these ports is sent over the
air as encapsulated IP packets. At the receiving end, the data is decapsu-
lated and delivered to the appropriate COM port(s). In contrast to the
radio’s IP Payload feature, having a terminal server at the Remotes
means that Ethernet data can be delivered to
specific
devices connected
to these radios. Terminal Server settings, examples, and additional ben-
efits are described in the following paragraphs.
The image on the following page, shows the
Device Manager
’s
Terminal
Server Configuration
screen. Two such screens are provided in the
Device
Manager
; one for COM1 and another for COM2. Here, the behavior of
the terminal server is set and applied. The Terminal Server must be
enabled and configured in
all
radios requiring IP encapsulation of serial
data. Proper configuration of the serial ports is also required, using the
Communications Ports
section of the
Device Manager
.
RADIO 1
RADIO 2
IP Payload 1 Data
Ethernet/IP RTU
IP Payload 1 Data
(Talk on VRC-1)
Serial COM2 Data
(Talk on VRC-2)
(Listen on VRC-1)
Serial-Based RTU
Serial COM2 Data
(Listen on VRC-2)
