The essentials to a sip trunking PBX system

Telecommunication systems can be very complicated, often involving the use of multiple technologies and service providers. In the past inter-office telephone, communications were handled with a private branch exchange system. These systems were expensive and clunky. In today’s environment, Voice Over Internet Protocol is taking over, and that means a complete change to the way we handle a simple phone call.

Trunking was a way for telephone carriers to provide access to many clients by sharing a set of lines rather than running individual pairs to each extension. Before digital systems took over, these trunk lines used to be switched with relays. You may remember those clunking sounds over the phone any time you called someone long distances. Those sounds came from the old mechanical trunk system inside your local central office. Today our system now incorporates VOIP technologies and requires a different way to handle multiple connections over the same line.

The new way to handle digital telephony in the Internet age is with SIP technology. SIP or Session Initiated Protocol help identifies a connection and help route that phone call to its destination to another computer or a physical phone. Internet Telephony Service Provider or ITSP can also make connections to Public Switched Telephone Network. The PSTN is the traditional telephone service that people have been used to. According to FCC records, AT&T plans on shutting down the PTSN systems, as long as they can maintain current service levels using SIP trunking technologies.

The ability for a computer to call a land line based phone is made possible through what is known as a unified communications network. This network provides an interconnection between private domain, like a customer’s internal computer network and public domain. The ITSP is responsible for tracking connections and identifying users. These carriers are also responsible for following all the laws and regulations set forth under the public domain. The ITSP is what can make the connection from VOIP phone to PTSN systems.

Companies like Broadconnect USA are equipment to deal with multi-tiered business and agencies that need independent call centers and can provide a robust sip trunking PBX. These corporations require a redundant system that stays up no matter what is going on at the headquarters. By using a hosted SIP provider, you can be assured that your system is secured and can withstand power outages or hacker attacks.