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1-22 About the PathBuilder S24x, 26x, and 27x switch
Hardware Components
Required cables The following cables, including two pigtail cables, ship with the E1 dual port digital
PBX interface card and are required to cable the E1 card to the DSPM/SM cards in
the PathBuilder S24x, 26x, and 27x switch node.
LED Status
Indicators
The E1 dual port digital PBX interface card contains four LEDs that can be viewed
through the rear bracket:
Cable Description Function
One 4-position 40-pin
MVIP ribbon cable
Connects up to three DSPM/SM cards to
interconnect digital voice traffic between individual
cards in the same PathBuilder S24x, 26x, and 27x
switch node.
One 8-position, 40-pin
MVIP ribbon cable
Connects four or more DSPM/SM cards to
interconnect digital voice traffic between individual
cards in the same PathBuilder S24x, 26x, and 27x
switch node.
Two 8-pin modular to DB15
cables
For 120Ω connection.
Two 8-pin modular to BNC
cables
For 75Ω connection.
LED Color LED is... ...Indicating
Port 49 Yellow OFF
ON
Normal operation
Carrier failure on Port 49 span
Port 50 Yellow OFF
ON
Normal operation
Carrier failure on Port 50 span
RUN Green OFF
ON
Card failure
Microprocessor Activity
SYSFAIL Yellow OFF
ON
Normal operation
Card failure