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About the PathBuilder S24x, 26x, and 27x switch 1-35
Hardware Components
DSPM Host Card with FXO Analog Interface
Introduction The Analog DSPM/HC (host card) supports one analog FXO (Foreign Exchange
Office) interface. The FXO is a daughtercard that is mounted onto the DSPM/HC.
Description The analog FXO daughtercard (when mounted on the DSPM/HC) allows the
PathBuilder S24x, 26x, and 27x switch to support one voice/fax channel per card.
Each DSPM/HX with FXO daughtercard combination occupies one ISA slot in the
PathBuilder S24x, 26x, and 27x switch.
Function The FXO interface provides a method for connecting to the PBX, simulating a
phone. The FXO interface:
• has a ring voltage detector for detecting an incoming call
• can generate a loop closure for acknowledging an incoming call request
• can generate a call request to a PBX
When You Receive
the Card
When you receive a DSPM/HC with FXO daughtercard, do the following:.
Step Action
1 Remove the card from the packing material.
2 Inventory the contents of the shipping container.
N
o
t
e
No cables are shipped with the DSPM/HC with FXO interface.
3 Power off the PathBuilder S24x, 26x, and 27x switch node.
4 Install the card into the PathBuilder S24x, 26x, and 27x switch node.