SIP Trunking: Why Do You Need It?

With all the advantages that SIP trunking offer (including essential cost savings), it`s no wonder why it is a popular topic in unified communications. SIP is responsible for creating and operating the communications sessions that are the foundation of VoIP-based telephony. Switching to SIP can be a huge step towards facilitating your company`s telecommunications and enhancing real-time communications. But the bigger motivation and major advantage for most companies is immediate and essential cost savings.

SIP trunk enables straight connection between your company and an Internet telephone service provider (ITSP). With SIP trunk you can stretch VoIP telephony above the company`s firewall, and the IP-PSTN gateway is not required for it. Moreover, SIP trunks can be used to carry not only VoIP calls, but instant messages, user presence information, video conferences and other real-time communication features. SIP trunking is much easier to configure and low-priced to create, manage, maintain and upgrade.


• Saving money on long distance communication. With SIP trunking long distance calls cost essentially less.
• Turning down IP-PSTN gateways. As SIP trunk connects straight to the company`s ITSP without passing over the publicly switched phone network, you can turn down IP-PSTN gateways with their complexity and high costs.
• Turning down an unnecessary network. Migration to SIP trunking is an adequate step towards the object of deploying a single, IP-based network which requires less equipment and wires as compared with redundant phone network.
• Cutting costs on expensive BRI and PRI fees. As SIP trunk is connected to an ITSP, the company can save on expensive PRIs and BRIs using instead less costly services. Moreover, if the company is using SIP trunking there is no need to purchase lines in blocks of 24 or 32.
• Enlarge the capabilities of office communication. Deploying SIP trunking the company can broaden existing capabilities with extra services.