ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 184)

7. Product Specification
MSAP2000 Technical Manual V3.0 7-77
7.27. RT Ethernet over SDH Module (REoSM)
Overview
The REoSM (RT Ethernet over SDH Module) provides SDH transmitted
Ethernet services for COT and RT ends. Because REoSM complies
with ITU-T G.7041 standards, its Ethernet connection service can equal
the connection quality provided by leased lines. REoSM can also
make up for the ETH Module’s limited bandwidth.
The REoSM needs to be installed at both the COT and its corresponding
RT, to be able to provide service.
Features
And
Benefits
„ Panel LEDS indicate status, faults, alarms, and network connections.
„ Complies with G.704 (GFP) standards
„ Bandwidth receipt and transmission capability can reach up to
100Mbps.
„ Built-in Ethernet Exchange chip supports more than 1024 VLAN
„ Bandwidth allows for frequency width adjustment at 64 Kbps per step
„ Use of non-volatile memory devices for performance data storage
Function
Diagram
Application
When use OIM/SM1/SM4 as the trunk interface, the data format is based
on TDM, so REoSM, associated with CEoSM is to provide the packet to
TDM translation, so the broadband service can be transported between
COT and RT.