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.