Hardware manual
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2.5
RJ21 Phone Line Interface Option
The back panel shown below illustrates the RJ21 version of the Phone Line
Interface Board (Model - CC4800-21). The RJ21 board attaches to the
standard DB25 back panel connectors (refer to section 2.2) for leased line or
dial-up applications.
Figure 2-3. Back Panel (with CC48-21L Phone Line Interface Board)
Note: The CC4800 48 Volt Card Cage does not appear as illustrated. You
will find a 3-terminal power input strip and hexagonal-shaped fuse holder
instead of an AC Power outlet and fuse on the bottom right of the cage.
RS232 Interface (SELV) Connectors
Alarm Connector (SELV)
(For Future Use)
DB25S Female RS232 (SELV)
(Reserved For Future Use)
Network Connectors (RJ11) (SELV)
NO COM NC
Common (Ground) (SELV)
Normally Open (SELV)
Normally Closed (SELV)
AC Power
and
Fuse
CC48-21L
Phone Line Interface Board
(see Callouts Description)
(TNV Circuit)
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