Alcatel-Lucent 9500 MPR - Protection Schemes

User Manual
Product information and planning
9500 MPR Rel. 3.1
3DB18809AAAA Issue 1 153/980
2.8.8 Protection schemes
2.8.8.1 Protection schemes with ODU300
Supported Protection types:
[1] RPS (Radio Protection Switching) Hitless for each radio direction (RPS-RX)
• RPS is distributed in 9500 MSS modules before termination of 9500 MSS frame.
[2] EPS (Equipment Protection Switching) for each module type
• Both Working and Spare modules send its own signal to the Core-E. Core-E selects the best
signal.
[3] HSB-TPS (Hot StandBy - Transmission Protection Switch)
• Spare ODU module is squelched.
2.8.8.1.1 RPS Switching Criteria
The switching criteria are:
– SF (Signal Fail): generated from transmission and equipment alarms affecting the Rx radio section:
– Demodulator Fail
– IDU-ODU cable loss
– LOF of aggregate signal radio side
– Main and spare ODU, IDU HW failures (card fail)
– HBER (high BER)
– EW (Early Warning)
2.8.8.1.2 EPS Switching Criteria
The switching criteria are:
– Peripheral Card Fail (switching off of the peripheral included)
– Peripheral Card Missing
– LOS of all the tributaries (of course only in case of PDH local access peripheral protection) managed
via SW.
2.8.8.1.3 HSB Switching Criteria
The switching criteria are:
– Radio Interface Peripheral Card Fail (switching off of the peripheral included)
– Radio Interface Peripheral Card Missing
– MSS-ODU cable loss
– ODU TX chain alarm (this is an OR of the following alarms: LOS at ODU input, modFail, txFail, ODU
card fail).