363-206-295
Circuit Pack Descriptions
7-50
Issue 1
December 1997
BCP3 Quick Reference Summary
7
Interface Functions
7
STS-1 signal interface functions performed by the BCP3 are as follows:
■
Transmission of selected STS-1 signals from function units to the main-b
circuit packs
■
Transmission of selected STS-1 signals from main-b to the function unit
circuit packs.
Timing signal interface functions are as follows:
■
Clock and frame selection from active and standby TGS circuit packs
■
Clock and frame distribution to main-b circuit packs
■
Clock and frame distribution to function units
■
Clock and frame distribution to companion BCP3 circuit pack.
Control Functions
7
■
Protection switching for all protected circuit packs
■
Inventory information (
CLEI code, date of manufacture, etc.)
■
STS-1 and STS-3c path protection switching.
Maintenance Functions
7
Maintenance functions provided by the BCP3 circuit pack are as follows:
■
Circuit pack fault detection and reporting
■
STS path BIP-8 performance monitoring
■
Insertion of STS path AIS
■
Insertion and detection of path unequipped signal
■
Detection of STS-1 and STS-3c path fail BER (10
-3
)
■
Detection of STS-1 and STS-3c path BER signal degrade (10
-5
to 10
-9
).
