The importance of the Session Initiation Protocol (SIP) has no VoIP. On the RCTS network VoIP, the designation SIP Trunk is often used when referring to the interconnection of our equipment VoIP with the operators. But, after all, what is the SIP Trunk?
After the standardization of the SIP as a communication protocol in VoIP networks, the need arose to create interoperability between companies and operators. Thus, a channel was born (trunk) communication that allows data transfer, over the protocol SIP, between different systems/networks.
As a method of comparison, the SIP Trunk, in an IP network, can be considered equivalent to a dedicated line in a circuit-switched network, where the main purpose is to interconnect two distinct networks to establish a direct line of communication. SIP Trunk uses the protocol as a standard method SIP to manage and/or establish communication sessions, but it can be configured to work with other protocols such as H.323 or, for example, T.38 for fax over IP.
There are advantages to creating a specific channel for this type of communication and the main one is Quality of Service (QoS). Since voice is a priority network service type, SIP Trunks ensure traffic optimization, making it faster and safer. Flexibility and cost reduction are also advantages of using trunks, taking into account the easy scalability and the lack of need for individual telephone lines.
In short, the use of SIP Trunks on the RCTS network VoIP is intrinsically linked to the evolution of technology VoIP and is one of the main legal objects in public tenders held every three years with communications operators.
