겔럭시 시리즈의 숨은 기능 3. http://victor8481.tistory.com/645

호기롭고 기분 좋게 갤럭시 노트7으로 변경하고 기분 업업....!!!! 근데,,, 비 오는 오늘 통화 품질이...... 으아아아~~~~~~~~~~~~~~~~~~~~~짜증난다. 알고 봤더니, HD Voice (VoLTE) Call 기본으로 설정되어 있고, 설정 할 수 있는 방법도 없었다. 노트4 쓸때는 제조사 전화 어플 설정에서 차단이 가능했었는데.... SKT 고객 센터에 전화 >> 삼성 서비스 센터로 이관 ??? 왜?? 그건 제조사에 물어보란다. 따로 해지하는 서비스가 존재하지 않는다고. 삼성 서비스 센터에 문의 >> SKT 고객 센터에 전화 ??? 왜?? 설정이 존재하지 않으니까 SKT에 물의해야 한단다... 나만의 결론?? 통신비 아껴서 돈 벌려는 통신사의 꼼수!!!!!!!!!!!!!!!!!!!!!..

In an emergency situation, like Earthquake or Tsunami, degradation of quality of service may be experienced. Degradation in service availability and performance can be accepted in such situations, but mechanisms are desirable to minimize such degradation and maximize the efficiency of the remaining resources. When Domain Specific Access Control (DSAC) mechanism was introduced for UMTS, the origi..

Step 1. Decode the value of nonce by base 64nonce : EBP7NsN3GpoTmm2G1/PRA2kQAHNI/rtBAABe2iwhzwRHgQ==Decoded Data : 1013fb36c3771a9a139a6d86d7f3d1036910007348febb4100005eda2c21cf044781 Step 2. Send the value of nonce to SIM.nonce : This value is RAND + AUTN from the network.APDU : CLA(Channel ID), INS(88), P1(00), P2(81 - See. spec. 31.103 - 7.1.2), Total Length, Data (RAND Length + RAND Data + A..

When a VoLTE client needs to connect to IMS network, it has to authenticate the network while network also needs to make sure that only the correct user is registered to its network. AKA Digest is one of the scheme to authenticate VoLTE client to the IMS server AKAAKA stands for "Authentication and key agreement". This scheme comes from the legacy 3gpp networks and has been widely used in LTE, 3..

Direction: E-UTRAN => UESignalling Radio Bearer: SRB1RLC Mode: AMLogical Channel: DCCHTransport Channel: DL-SCH The RRC CONNECTION RELEASE message is used to command the release of an RRC connection. E-UTRAN initiates the RRC connection release procedure to an UE in RRC_CONNECTED state. The RRC CONNECTION RELEASE procedure with redirection information can also be used for CS-fallback to GERAN or..