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4.4 SS7 Network
4.4.1 WCDMAs SS7 network organization must comply with Specifications of engineering design for No.7 signaling network YD/T 5094.NEs of the core network shall be deployed as SPs to access the SS7 network.
4.4.2 TDM or IP bearer may be used to carry the signaling between SPs，SP and STP，and STPs.