Moseley Associates Inc EVENTHD ユーザーズマニュアル

 

SONET/SDH rings are inherently self-healing. Each ring has both an active path and a 
standby path. Network traffic normally uses the active path. If one section of the ring 

fails, the network will switch to the standby path. Switchover occurs in seconds. There 
may be a brief delay in service, but no loss of payload, thus maintaining high levels of 
network availability. 

The consecutive point architecture implemented in the Moseley Digital Radio family is 
based on a point-to-point-to-point topology that mimics fiber rings, with broadband 

wireless links replacing in-ground fiber cable. A typical consecutive point network consists 
of a POP and several customer sites connected using Software Defined IDU™. These 

units are typically in a building in an east/west configuration. Using east/west 
configurations, each unit installed at a customer site is logically connected to two other 

units via an over-the-air radio frequency (RF) link to a unit at an adjacent site. 

Each consecutive point network typically starts and ends at a POP. A pattern of wireless 
links and in-building connections is repeated at each site until all buildings in the network 

are connected in a ring as shown for an ethernet network in Figure 2-7. For 2 x 1+0 and 
2 x 1+1 nodes payload and NMS connections need to be jumpered between two 

SDIDU

TM

. For 1 x 2+0 nodes, there is no need for jumpers as there is a single SDIDU

TM

. 

For SDH or SONET payloads, the configuration is similar but an external add/drop mux is 

required.