Frame relay (FR) is optical digital transmission and user equipment intelligentization-based fast packet switching technology simplifying X.24 network node protocol function. Comparing with X.25, FR is more suitable to the data application service with high requirement on rate and timeliness. Setting about from the demand of user and basing on the advanced backbone optical network and MAN access network spread across the country, China Unicom launched FR Dedicated Line Service.
Service Characteristics
- Frame relay data transmission protocol only reserves the function of physical layer and the core layer of data link layer. Data is transferred in network in the format of link layer.
- The access rate of FR user is flexible.
Frame relay adopts statistics multiplexing technology, allows user to occupy other idle bandwidth to enjoy the service higher than the promised rate. This not only makes full use of the excellent response of the transmission bandwidth of physical media to burst data, but also greatly simplifies the network topological structure and reduces hardware costs. |
Data Dedicated line service 
