[1] [S] TS 23.272-830, Circuit Switched Fallback in Evolved Packet System, 3GPP, March, 2009.

　　[2] TR 23.879-900, Study on Circuit Switched (CS) domain services over evolved Packet Switched (EPS), 3GPP, March 2009.

　　[3] Voice over LTE via Generic Access (VoLGA) Forum, http://www.volga-forum.com/

　　[4] [S] TS 23.228-880，IP Multimedia Subsystem (IMS)，3GPP, March 2009

　　[5] [S] TS 23.216-830，Single Radio Voice Call Continuity (SRVCC), 3GPP, March 2009

　　[6] [S] TS 23.237-820, IP Multimedia Subsystem (IMS) Service Continuity: Stage 2, 3GPP, March 2009

　　[7] SRVCC切換用戶面中斷性能分析，華為科技，2009年5月

　　[8] TD-SCDMA與GSM系統(tǒng)基于業(yè)務(wù)的互操作測試規(guī)范-20090213-V1.1.0，中國移動，2009年2月

　　[9] S2-094234，SID: Study on SR-VCC Enhancements, China Mobile, May 15, 2009, 3GPP SA2#73, Tallinn,

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