SIP (Session Initiation Protocol) Trunking services provides a blend of voice and data traffic onto a single IP circuit. Trunking refers to the backbone of phone lines used by multiple users that connects to a telephone network. This service delivers dynamic bandwidth allocation while supporting FXS, PRI and T1 connections. Public Switched Telephone Network (PSTN) which is a circuit switched network that requires a physical connection between the two points to complete a call was a popular option before SIP. SIP Trunking requires no physical connection which increases mobility and stability with communications.
Using SIP Trunking in day-to-day operations helps the flow of communication between customers and employees, increases employee productivity, makes file recovery easier, aids in the overall growth of business, and offers flexibility. Businesses can also cut monthly fees significantly because SIP phone connections can be up to 60-80% less than analog PSTN.
SIP Trunking also does not need to maintain the same degree of physical infrastructure like PSTN. SIP Trunks are also appealing because companies do not need to purchase separate phone lines for every individual employee. This makes it easy for any company to scale up or down to meet needs.