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