CDMA mobile exchange center/visit Location Register product ZXC10-MSC/vlr mainly completes CDMA core network MSC and vlr functions, at the same time has integrated gmsc, SSP, tmsc2 and lstp functions, it has the advantages of modular design, advanced performance, strong system reliability, and standardized signaling interfaces.
MSC is a functional entity that controls and exchanges the mobile stations located in the region it serves. It is also an automatic connection device for user traffic between the cellular network and other public exchange networks or other MSC. MSC has the functions of network interface, public signaling system and billing; has the interface signaling system between BSS-MSC and wireless resource management, mobility management and other functions; has the call routing established to the called Mobile Station, complete the MSC (gmsc) function.
Vlr is a database that stores the information that needs to be retrieved for Ms calls and outbound calls in the region under MSC, for example, the user's number, attributes, identification of the location and region, and services provided to the user.
SSP provides SSF, CCF, and built-in SRF functions in the win Distribution Function plane. It is a functional entity that provides business control, call control, and resource management. Using MSC as a platform, the call process is controlled Based on the operation code, resource code, and check-out point (DP) in the SCP message, and resources are scheduled, return the execution result and check status to SCP for further business orientation.
Tmsc is divided into tmsc1 and tmsc2.
1. tmsc1 is an independently set mobile level-1 settlement center. It is mainly responsible for connecting and transferring the second-level settlement center tmsc2 of the mobile network connected to it or inter-regional services.
2. tmsc2 is a mobile second-level settlement center. It is responsible for connecting and transferring the inter-office services of the mobile Internet connected to it. It can be set independently or integrated in MSC or gmsc devices. ZXC10-MSC/vlr integrates the functions of tmsc2.
STP is divided into hstp and lstp.
1. hstp is the first-level signaling transfer point independently set. It is responsible for transferring the second-level lstp or SP signaling messages it is receiving.
2. lstp is the second-level signaling transfer point, which is responsible for transferring the signaling messages of the third-level sP it is connected to. lstp can be set independently or together with sp. ZXC10-MSC/vlr integrates lstp functions.
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