Mobile Softswitch Disaster Recovery Mechanism And Engineering

The living traditional MSC in Sichuan Unicom are BYB501 equipment provided by Ericsson. Although the current period in the after-sales service. But with the hardware at run-time longer, the failure rate is also gradually improve. Another point is there is no path for a BYB501 device with IP based transformation. It has brought big obstacle for node upgrade and network construction. Comparing with traditional MSC's capacity, physical volume, power consumption, meanwhile through the KPI analysis, it is concluded that the necessity is very much imperative to replace them by softswitch MSC. Regardless of the economy from the existing network or from the direction of the future transition to 3G will require the existing circuit-switched equipment be replaced by soft-switching equipment.Due to some factors that MSC server has concentrated management scheme and big capacity, once the a MSC server crashes, it will cause disaster to the serving subscribers. Therefore the use of disaster recovery mechanism for MSC Server softswitch at the entire construction process plays an important role. Softswitch disaster recovery mechanism is the subject of my research focus. At present, At present, sophisticated Softswitch major disaster recovery mechanism has: 1, MSC Server 1 +1 backup; 2, MSC Server N +1 backup; 3, MSC POOL way. I for the three disaster recovery mode working principle, implementation mechanism of study and research.This paper singled out a suitable MSC server redundancy back up mode by comparison for Sichuan unicom. This is in line with the actual network situation. Comparing to traditional exchange, capacity of softswitch generally relatively large, thus derived from softswitch MSC Server more than the traditional need for disaster recovery to ensure the security and stability of networks operating. After Huawei Server N +1 switching test, verify the main MSC Server can successful switch to the standby MSC Server, but the belonging MGW has 20-30 minutes traffic interruption.After 2008, "5.12" WenChuan earthquakes, network disaster recovery are generally concerned by everyone. In particular, core network equipment, disaster recovery referred to a higher altitude, a lot of equipment requires physical address disaster recovery. Effective way to ensure the backup at the face of unexpected disasters through the link switching operations to ensure that expedite "lifeline". This is the obligatory responsibility of our people engaged in communication.