Raisecom Technology Co., Ltd
12
3
．
Regenerator REG
Regenerator REG can compensate the optical attenuation caused by
transmission fiber and regenerate new optical signal for transmission.
5.2. Network topology
OPCOM3100-155 has flexible networking capacity and high transmission
reliability, and it provides both 1+1 path protection and 2F SNC-P protection.
1
．
Point-to-point network consists of 2 TM devices and transmits STM-1, E1
and Ethernet services.
S T M - 1
o p t i c a l
s i g n a l
E 1 e l e c t r i c a l s i g n a l /
E t h e r n e t s i g n a l
T M
T M
E 1 e l e c t r i c a l s i g n a l /
E t h e r n e t s i g n a l
Figure 5-3 point-to-point topology
2
．
Chain topology
Chain topology is made up of two TM devices and several ADM devices.
Data is often transmitted in bi-direction and less optical fiber is needed.
STM-1 optical
signal
E1 electrical signal/
Ethernet signal
TM
ADM
STM-1 optical
signal
TM
E1 electrical signal/
Ethernet signal
E1 electrical signal/
Ethernet signal
Figure 5-4 chain topology
3
．
Ring topology
