protocol underlies voice communication along
SIP SIP or session initiation protocol underlies voice communication along with real time transport protocol. SIP has three components comprised of proxies, user agents and registrar servers. It would be lengthy to explain how these three components interact v house to enable voice calls over the internet but what happens is that the SIP message has a first line, a header and message body. It is open and find vulnerable with the header containing information about identification of user agent client and SIP path. SIP also faces NAT issues since those who are behind NAT will not enjoy the functionality. SIP has different flavors and compatibility issues may arise. Hackers can easily decipher details due to the shortcomings of SIP. The session border controller enters the picture to address and overcome the above SIP related issues. The SBC Take the case of Enterprise A. It has an internal LAN network with a firewall and it uses Controller in through a VoIP service prov