Protection Sub-System; Eps Protections - Alcatel 1850 TSS-320 Technical Handbook

3.6 Protection sub-system

The types of protections are:
• Equipment protection (EPS)
The EPS protection is supported on the 1850 TSS-320 equipment for the following cards:
Equipment Boards
UNIVERSAL MATRIX
EQUIPMENT
CONTROLLER
• Network protections:
–
SNCP/I
It is used on ring, linear and mesh network topology. Switching occurs on the path,
selecting (Rx side) the signal transmitted to both Tx A and Tx B (A and B are two different
directions) sides.
–
Drop & Continue
It is an architecture to connect sub-networks, in order to improve traffic availability.
–
Collapsed single node ring interconnection
It is an architecture to connect sub-networks, in order to improve traffic availability with
hardware resource reduction (four nodes collapse in one node).
–
2F MS-SPRING, 2 fibres Multiple Section Shared Protection
The switching information is also indicated on the Craft Terminal screen.

3.6.1 EPS Protections

3.6.1.1 Matrix card protection
The positions of main and spare UNIVERSAL MATRIX (MT320) are:
• Slot 10: MATRIX main
• Slot 11: MATRIX spare
Matrix card, providing HO/data and LO switching capabilities besides the functionalities of FLC and CRU,
can be EPS protected.
EPS protection is triggered by the detected matrix failures, or can be forced via manual command.
The EPS protection has the following characteristics:
Architecture: 1+1
Switch type: UNIDIRECTIONAL
Operational State: Not Revertive
Switching time <50ms
Triggers: Equipment failures
Alcatel 1850 TSS-320 Rel. 1.1
112/270 8DG 07734 AAAA Edition 01
Protection
(MT320)
(EC320)
Number of protection
Scheme schemes
1+1 1
1+1 1
Mode
Not revertive
Not revertive
Technical Handbook Common
Functional Description