①Google 검색 (eSRVCC); 개요 

   IMS_Information_Gateway_VoLTE_Signaling_Analysis_Manual(eSRVCC).pdf


②SRVCC&eSRVCC의 차이. QA (참조용)

   http://lteuniversity.com/ask_the_expert/f/59/t/5672.aspx


③관련 문서(로그 확인 용)

 http://www.qtc.jp/3GPP/Specs/24237-a30.pdf

   3GPP TS 24.237 V10.3.0 (2011-06) 

   Technical Specification 3rd Generation Partnership Project; 

   Technical Specification Group Core Network and Terminals; 

   IP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) Service Continuity;

   Stage 3 (Release 10)


④관련 문서(참고용)

   http://www.qtc.jp/3GPP/Specs/23216-b70.pdf

 3GPP TS 23.216 V11.7.0 (2012-12)

 3rd Generation Partnership Project;

 Technical Specification Group Services and System Aspects; 

 Single Radio Voice Call Continuity (SRVCC); Stage 2 (Release 11)


참고해서 낼은 로그를 확인해봐야.. . 과연과연 두구두구 

SRVCC의 종류 

aSRVCC: Packet switched to Circuit Switched call transfer during Alerting Phase

bSRVCC: SRVCC before ringing

vSRVCC: SRVCC for video call

rSRVCC:r everse SRVCC HO from CS call to PS IMS

eSRVCC: enhanced SRVCC           

   Support of mid-call feature during SRVCC handover (eSRVCC)

   Support of SRVCC PS-CS transfer of a call in alerting phase (aSRVCC)


SRVCC VS eSRVCC 


참조 

http://www.sharetechnote.com/html/Handbook_LTE_SRVCC.html

  →Protocol Sequence Example 도 있음!

www.exfo.com/library/technical-resources/webinars/testing-ims-volte-esrvcc

  →SRVCC,eSRVCC관련 강의

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