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The 411 on SIP Trunking: What Is It, How It Works, and Why Your Business Needs It

As communication needs continue to evolve, many companies are opting for cloud-based unified communications. According to a recent report by Market Research Future (MRFR), the global cloud communications market is expected to explode to $51.37 billion by 2030, growing at a rate of 19.8% since 2020. If your business is exploring more strategic unified communications, but you’re not ready to make the switch from your PBX system, then SIP trunking might be for you. Companies are experiencing a better return on investment on their private branch exchange (PBX) system thanks to SIP trunking because it both eliminates the need for traditional phone lines, you can save by using a single internet connection for data and voice. and offers more scalability and flexibility across the board.

What Is SIP Trunking?

First, “SIP” stands for “session initiation protocol,” a method of sending voice and other unified communication services over the internet. The “trunking” aspect refers to the underlying infrastructure of the phone lines that facilitate calls. SIP is the technology used to create calls over the internet vs. dialing through a traditional analog phone line. SIP trunking offers a significantly more sophisticated experience compared to a one-dimensional PBX.

What’s the Difference Between VOIP and SIP?

Voice over Internet Protocol (VoIP) facilitates voice calls over the internet instead of through an analog phone line. SIP trunking is actually the backend technology that facilitates this, similar to how “https://” at the beginning of a website link directs you to that specific website. While VoIP is limited to transferring voice data, a SIP trunk can transfer diverse packets of multimedia data, such as voice, text messages, or video.

Benefits of SIP Trunking

SIP trunking is the cornerstone of modern business VoIP systems when a business owns their own PBX, enabling cost-effective and scalable communication. With seamless integration to cloud applications that deliver features beyond those provided by their PBX hardware, businesses benefit from advanced features, efficient bandwidth utilization, and simplified management, empowering them to stay ahead in today’s dynamic business landscape. Here are a few more benefits of SIP trunking.


By consolidating voice and data services, businesses can experience a more reliable connection. With 100% uptime, SIP trunking offers better connectivity. As part of a unified cloud communications strategy, SIP trunking facilitates better communication over long distances and internationally.


Ditch the expensive analog lines that are reaching their end of life and switch to SIP trunking which offers scalability and flexibility. With SIP trunking, businesses can easily add or remove lines as needed, accommodating fluctuations in call volumes and scale their communication infrastructure accordingly. SIP trunking allows businesses to connect different communication systems, including traditional phone systems, IP-based systems, and unified communications platforms, providing flexibility and interoperability.


SIP trunking leverages modern IP-based technology, ensuring businesses are equipped with a future-proof communication solution that can easily adapt to evolving technologies and business needs and brings it all together under one platform. Businesses not only save money, but can enjoy the simplicity of working through a single provider. Feature-rich communication solutions like UCx SmartVoice come with incredible capabilities that allow for seamless communication across any device from anywhere. As technology evolves, add-ons and upgrades are also simple and seamless.

UCx SmartVoice SIP Trunking

The UCx SmartVoice solution is SIP trunking that offers modern collaboration and call reporting features to be added to your business while keeping existing PBX hardware. Backed by the experts at TPx, this unique hybrid approach allows for a gradual migration to cloud-based services and future proofs against digital transformation.

Upgrade your communication infrastructure with cloud communication solutions from TPx and experience flexibility, scalability, and cost savings while enjoying reliable and secure communication tools accessible from anywhere. Learn more today by talking to our sales team.

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