Nortel Networks 1000 - Manual (Page 796)

796 NTAK10 2.0 Mb DTI card
the primary and secondary clock sources are lost due to hardware faults
or when invoked by using software commands.
Clock controller functions and features
The NTAK10 2MB DTI clock controller functions and features include:
•
phase-locking to a reference, generating the 10.24 Mhz system
clock, and distributing it to the CPU through the backplane. Up to two
references at a time can be accepted.
•
providing primary to secondary switchover and auto-recovery
• preventing chatter
• providing error burst detection and correction, holdover, and free
running capabilities
•
complying with 2.0 Mb CCITT specifications
•
communicating with software
• filtering jitter
• making use of an algorithm to aid in detecting crystal aging and to
qualify clocking information
The NTAK10 2MB DTI clock controller functions and features include:
• phase-locking to a reference, generating the 10.24 Mhz system
clock, and distributing it to the CPU through the backplane. Up to two
references at a time may be accepted.
•
providing primary to secondary switchover and auto-recovery
• preventing chatter
• providing error burst detection and correction, holdover, and free
running capabilities
•
complying with 2.0Mb CCITT specifications.
• communicating with software.
• providing jitter filtering.
• making use of an algorithm to aid in detecting crystal aging and to
qualify clocking information.
The NTAK10 2MB DTI clock controller functions and features include:
• phase-locking to a reference, generating the 10.24 Mhz system
clock, and distributing it to the CPU through the backplane. Up to two
references at a time can be accepted.
• providing primary to secondary switchover and auto-recovery
• preventing chatter
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.