1.2.2 E
C
XTENSION
The Extension Control Card with Monitor Port (part number SM618C)
provides the communication link between the primary chassis with the
Master Control Card and the extension chassis. Up to 63 extension chassis
can be linked via Extension Control Cards. Each Extension Control Card is
numbered according to its position in the system, beginning with #01. It has a
memory, backed up by a lithium battery that provides backup of all the stored
information in case of a power failure for a minimum of one year. (The shelf
life of a lithium battery is five years.)
This card features two communication ports and one monitoring port:
• COMM IN is used for connection to the previous chassis.
• COMM OUT is used for connection to the next chassis in the system.
• MONITORING PORT IN is the input port for on-line status monitoring,
and it is connected to the MONITORING PORT OUT on the Power
Supply card.
1.3 Channel Interface Cards
The channel interface cards are placed in slots 0-15.
AB V.35 18-Conductor Card
AB V.35 18-Conductor Card (part number SM601C) switches 18 conductors.
AB V.35 18-Conductor Card with Alarm and Monitor
AB V.35 18-Conductor Card with Alarm and Monitor (part number SM602C)
switches 18 conductors, with alarm and monitoring bus.
AB-232 12-Conductor Card
AB-232 12-Conductor Card (part number SM603C) switches 11 conductors,
F/F.
AB-232 12-Conductor Card with Alarm and Monitor
AB-232 12-Conductor Card with Alarm and Monitor (part number SM604C)
switches 11 conductors, with alarms and monitoring bus and lead status
indicators, F/F.
AB-232 24-Conductor Card
AB-232 24-Conductor Card (part number SM605C), switches 23 conductors,
F/F.
CARDS FOR NETWORK CONTROL SWITCHING CHASSIS
C
ONTROL
ARD
9