Circuit Pack Descriptions
7-20 Issue 8.0 July 2002
Quick Reference Summary 7
Control Functions 7
The LNCTL circuit pack performs the following control and maintenance functions:
a. Performs low and high speed protection switching computations
b. Performs line specific computations
c. Controls the circuit pack faceplate FAULT LED
d. Isolates faults for the BCLANs.
Interface Functions 7
The LNCTL circuit pack provides the following interface functions:
a. Communications between the LNCTL and SYSCTL circuit packs using the
LCLAN interface
b. Communications between the LNCTL and the board controller on the
circuit packs associated with a particular OC-48 high speed line using the
BCLANs.