Connecting to party-line intercom systems, Clear-com and compatible party-line, Connecting to party-line intercom systems -4 – Clear-Com CellCom Battery Pack Charger User Manual
Page 52: Clear-com and compatible party-line -4, Table 4-1 party line pinout -4
Clear-Com Communication Systems
CellCom V2.0.3 Instruction Manual
4 - 4
the basestation end of the CAT-5 cable. Position the ferrite
as close to the basestation as possible. A suitable ferrite is
available from Wurth Elektronix. The part number is 742 711
32.
Note: It is recommended that shielded CAT-5 cable is used for
CellCom systems.
CONNECTING TO PARTY-LINE INTERCOM
SYSTEMS
Up to two channels of party-line intercom can be connected to the
CellCom basestation. The descriptions below will discuss connections
with Clear-Com and compatible party-line, RTS party-line, the ability of
CellCom to power up to four Clear-Com party line beltpacks by itself,
and the front-panel settings associated with these party-line
connections.
Using the front-panel display and rotary encoder, the user may go into
the PORTS menu, select the desired party-line channel, and create a
five-character alphanumeric label for it. This is the label that would
then appear on any CellCom wireless beltpacks to which that party-line
connection was assigned for communications. In the GROUPS menu,
the party-line connection can be assigned as a member of any of the
groups, as desired.
CLEAR-COM AND COMPATIBLE PARTY-LINE
Clear-Com and Clear-Com-compatible wired party-line intercoms
connect to the PL CH-A and PL CH-B connectors in a similar manner
to connecting beltpacks or remote stations to the intercom line.
Typically that wired intercom connection would have a 30-VDC current
on Pin 2, coming from a main station or an intercom power supply. The
second connector in the pair may be used as a loop-through to go to
other wired party-line stations or beltpacks, or to a second CellCom
basestation. The pinout for party line connector is shown in table
Table 4-1.
Table 4-1: Party Line Pinout
To connect party-line equipment to the basestation
1. Check that the party-line LED on the front-panel is out, which
indicates that the party-line connection is disabled from the
basestation.
PIN
DESCRIPTION
1
Ground (shield)
2
Power
3
Audio