Session Initiation Protocol (SIP)
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Session Initiation Protocol (SIP)

The success of your business is dependent on communication with your potential clients, but you will also need to communicate with your partners, vendors, and employees. Communication is key to any growing business, and if your phone system is outdated or if exorbitant phone bills are becoming a problem, SIP calling can only elevate your phone system while eliminating high phone bills.

What is SIP?

SIP is an acronym for “Session Initiation Protocol” and is the process of transmitting voice calls over a SIP trunk, and it works with VoIP phone systems. SIP is a signaling protocol used to establish a session between two or more participants. Basically, SIP establishes the connection and was designed to set up real-time multimedia sessions between individuals or groups. In addition to telephone calls, SIP is also used to establish video or audio meetings.

A traditional phone system involves two parts — the PBX and the PSTN. First, the PBX (Public Branch Exchange) is a very old-fashioned term for a system that hasn’t evolved much over the past century and is your on-premises system that manages your calls. Second, the PSTN (Public Switched Telephone Network) is responsible for routing calls to their destination. With SIP, there’s no need for a physical connection to a phone company and eliminates the need for multiple lines. The old copper wire phone lines will soon be obsolete, and SIP calling is the future.

SIP is One of the Most Common Protocols Used in VoIP Technology

VOIP systems allow you to deliver voice and multimedia content over the Internet, and SIP helps to establish the connection between participants. SIP is also one of the cheapest ways to communicate with the internet’s availability. VoIP is a family of technologies that all support sending or receiving voice messages over the internet, and SIP is an application protocol used to carry all forms of digital media, including voice messages. Therefore, SIP is a specific technology that supports VoIP calls.

What is SIP Trunking?

An SIP trunk is an interconnection between two domains of the Unified Communications network. SIP trunking allows us to partition the network into either public or private domains. Internet Telephone Service Providers (ITSP) use SIP trunking to securely deliver telephone and streaming media services to users equipped with private branch exchange (PBX).

What Are the Benefits of SIP calling?

One of the main benefits of SIP calling is the price, but there are a plethora of additional benefits that come along with SIP and VoIP calling.


Switching to SIP calling can mean enormous savings for your businesses. The savings are almost instantaneous with a SIP system due to low set-up costs and the elimination of higher costs that accompany old-fashioned phone systems.

Sound Quality:

If there is any concern about the sound quality of SIP calling, those concerns can be easily quelled. Most systems use HD voice or wideband audio, which is high-definition voice quality. This extends the frequency range of audio signals transmitted over telephone lines, which results in higher speech quality.


Installing SIP calling in your office couldn’t be easier, and training your staff to use the system is just as simple. An easy-to-use control panel handles all of the maintenance for the system, and your employees will need to train on only one system instead of several. This ensures everyone is on the same page and simplifies the training process.

You’re Always Available:

The days of missing phone calls after hours or when you’re out of the office are now over. With an SIP phone system, you can reach your customers, partners, or employees from just about anywhere by rerouting your office phone to a different extension or a mobile phone. You can take your business on the road with you. Now, you’re always available, and you will never miss an important phone call or big sale.

Less Maintenance:

SIP does require maintenance, but most of that is accomplished off-site. Monthly or annual maintenance plans are available to schedule your recurring costs.

Start Reaping the Benefits of SIP

SIP service is the answer to outrageously high phone bills, and SIP trunking can eliminate a wired connection, giving you the freedom to work away from the office. It allows you to do all of your business online.