ZXUN iMG is targeted at carrier-class media gateways with carrier-grade voice service quality, providing management and operational capabilities with high reliability, high availability and ease of maintenance.
ZXUN iMG supports service-bearing functions of VMGW, TMGW, and GMGW in GSM/UMTS/TD-SCDMA/CDMA2000 network, and realizes networking flexibly. ZXUN iMG could be smoothly evolved to IM-MGW/MRFP in IMS network.
ZXUN iMG supports the service bearer function of TG network element in IMS network. It cooperates with MGCF to realize the interconnection among IMS network and CS network, PSTN network. It can access to No.7 signaling network and PRI network. It is mainly responsible for connecting PSTN network with IMS network, and performing the conversion of voice/fax data between the PSTN/ISDN side and IP network side.
ZXUN iMG supports the built-in signaling gateway SGW / STP function, it also supports various signaling connections and networking methods.
ZXUN iMG has two product forms. It can be provided as a virtual network element (VNF: Virtual Network Function) with NFV / SDN technology and hardware and software decoupling, and deployed in the industry common COTS hardware. It can also be provided based on the traditional ETCA hardware platform.
Bearer Access and Switch
MGW supports three kinds of media traffic bearer modes: TDM bearer, IP bearer and ATM bearer. It also supports the traffic interworking under the three bearer modes.
With IP bearer and ATM bearer, the communication among MGW media traffic is asynchronous. MGW supports bearer control under this situation, including bearer establishing, release and modification of bearer attributes.
As the MGW accesses ATM bearer in Iu interface or accesses TDM bearer in A interface, Mc interface usually uses IP bearer, under this situation, MGW is featured with SGW function to realize traditional No.7 signaling conversion to IP signaling .
MGW interworks with traditional No.7 network, IP network, PSTN network, and so on.
MGW plays call service tone and intelligent tone, plays and detects DTMF tone and MFC tone. For MSC Server, MGW is a voice resource library.
MGW is featured with various voice coding & decoding functions, including PCM-A, PCM-μ, AMR-NB, AMR-WB, FR-AMR, HR-AMR, GSM-FR, GSM-HR, GSM-EFR, G.723, G.729, EVS, etc. It also supports TrFO function.
MGW supports multiple data services in CS domain:
It includes configuration management, dynamic management, signaling trace and performance management, etc.