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aturesOSN 7500
Technical Manual - System Description
Figure 8-8 VP-Ring/VC-Ring protection
The OptiX OSN 7500 provides 1+1 protection for VP/VC. ATM service is protected by
adopting the mode of dual-fed and selective receiving. Two connections (working path
and protection path) are created respectively between the source node NE1 and the
sink node NE3. Normally, the receive end selects the service transmitted over the
working path. When the primary ring fails, the receive end starts protection after
detecting relevant failure information, and switches the received service to the
protection path, thus achieving the protection of ATM service.
Working path
ATM service
Protection path
NE1
Huawei Technologies Proprietary
NE2
ATM service
NE3
NE4
8-9
8 Protection
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