1. GSMA. Official Document NG.119 -Emergency Communication (Version 1.0) July 2021. https://www.gsma.com/newsroom/wp-content/ uploads//NG.119-v1.0--3.pdf. GSMA. Official Document NG.119 -Emergency Communication (Version 1.0) July 2021. https://www.gsma.com/newsroom/wp-content/ uploads//NG.119-v1.0--3.pdf.
2. 3 GPP. TS 23.167 : IP Multimedia Subsystem (IMS) emergency sessions (Release 17) , Sept. 2021 . https://portal.3gpp.org/desktopmodules/ Specifications/SpecificationDetails.aspx? specificationId=799 3GPP. TS 23.167: IP Multimedia Subsystem (IMS) emergency sessions (Release 17), Sept. 2021. https://portal.3gpp.org/desktopmodules/ Specifications/SpecificationDetails.aspx? specificationId=799
3. Federal Communications Commission . FCC 911 Regulations: 47 CFR Part 9 : 911 Requirements, 2021 . https://www.ecfr.gov/current/title-47/ chapter-I/subchapter-A/part-9. Federal Communications Commission. FCC 911 Regulations: 47 CFR Part 9: 911 Requirements, 2021. https://www.ecfr.gov/current/title-47/ chapter-I/subchapter-A/part-9.
4. Nils Aschenbruck , Matthias Frank , and Peter Martini . Present and future challenges concerning DoS-attacks against PSAPs in VoIP networks. 2006 . Fourth IEEE International Workshop on Information Assurance (IWIA'06) . Nils Aschenbruck, Matthias Frank, and Peter Martini. Present and future challenges concerning DoS-attacks against PSAPs in VoIP networks. 2006. Fourth IEEE International Workshop on Information Assurance (IWIA'06).
5. DDoS Attacks on 9-1-1 Emergency Services