With the continuous development of smart business

to ensure continuity and reliability of business operations urgent need for a comprehensive SCP wide network of disaster.SCP in the decision to adopt mainstream business-class N+1 disaster recovery program（equipment benefit older） based

together with equipment manufacturers in a variety of switching options on a detailed discussion and repeated argument

the decision to use:by HSTP/LSTP used to add the primary backup node routing SCCP layer.The HLR program is the first time the switching mode in SCP’s disaster recovery

you can achieve when a primary use SCP to STP blocking all signaling links appear after the disaster SCP node can automatically take over the failure of all functions

to achieve seamless switching operations.