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  • BTI Communications Group

What is SIP Trunking: 6 Key Benefits for Business!

SIP Trunk Call Concept Art

Understand how SIP trunking works and session initiation protocol can provide multiple benefits to enhance your business communication and reduce your costs.  

Table of Contents 

What Is SIP Trunking? 

Session Initiation Protocol Trunking (SIP Trunking) refers to the virtual phone lines that allow you to make calls through an internet connection to anyone with a phone number.

Trunking refers to consolidating multiple communication channels into a single and unified connection.

This allows SIP Trunking to not only transmit calls but also other forms of communication such as voice, video, SMS, and other messaging services, resulting in reduced costs and increased flexibility.  

What is SIP Trunking Used For?  

Session Initiation Protocol Trunking was created to replace the old PRI (Primary Rate Interface), the classic physical copper wires that were (and are still being used) to transfer information through thousands of lines.

Maintaining PRI technology is difficult and expensive. Finding and installing the appropriate hardware for traditional lines to work has become difficult due to the latest technological advancements and the shortage of the necessary hardware for PRI technology to work. 

How Does SIP Trunking Work?  

SIP Trunking works as a middleman between your business phone system and your internet telephony service provider (ITSP). Instead of routing calls through copper wires, SIP trunking sends the signals over data networks by virtualizing your whole infrastructure to deliver seamless communications.

All you need to make the switch from PRI to SIP call trunking is:

  • An Internet connection  

  • An IP PBX Box (also known as a Private Brand Exchange Box)  

  • VoIP Phones or VoIP Phone adapters (in case you are planning to use your traditional phones) 

  • Internet connection for your phone     

What is a Direct Inward Dialing (DID)?  

Direct Inward Dialing (DID) is a powerful feature provided by a SIP Trunking system that allows your business to direct multiple calls to multiple phone numbers within your company to avoid clients staying in queues or reaching auto-attendance without the need for separate phone lines. 

The Benefits of SIP Call Trunking

If you are looking to increase your business flexibility, efficiency, and scalability, session initiation protocol trunking may be the tool that you’ve been looking for. Some of the benefits of SIP call trunking include:   

Reduced Costs  

Working with traditional phone lines comes with multiple downsides. Adding, removing, and maintaining traditional phone lines requires a specialist on-site to manage your communications. In addition, you will need to cover recurring costs such as hardware, installation, and maintenance costs.

Session initiation protocol trunking is charged on a per-channel basis. This means you only pay for the estimated volume of calls that your business will make.


SIP trunk service providers like BTI have even more flexible pricing options. 


One of the challenges of growing your business is adapting your current infrastructure to meet your customer needs. SIP Trunking allows you to adapt your infrastructure to your current or future needs without the need to invest in expanding your infrastructure or mindless customer service calls.  

With SIP call trunking, you can scale or descale your business on-demand.


Call Trunking is not tied to any physical location. This allows your organization to have local numbers in any region allowing you to increase your call-pick-up rate in your area while allowing your company to move locations without any inconvenience if needed.   


People are 4 times more likely to answer calls from local numbers. 


Streamlined Management  

With session initiation protocol trunking, you can manage your calls, video conferencing, messaging, and other communication channels from a single and unified business communication system.

As a result, your business will have a streamlined and comprehensive communication system that is easier to manage and increasingly efficient. 

Increased Security  

Unlike outdated phone systems, SIP trunking provides dedicated connections, ensuring not only crystal-clear conversations but also unmatched security.  

Increased Call Quality  

SIP Trunks are designed to provide abundant bandwidth for high-quality connections to eliminate call dropouts and echoey connections by leveraging cutting-edge AI technology. 


Its cloud-based nature allows you to experience high-quality calls even during busy periods if you have a stable internet connection.

Traditional Phones Vs SIP Trunking, Which One Is Best for Me?  

While SIP Trunks are often considered the go-to option for organizations, it's important to note that there may be exceptions. Every organization is unique, and there may be specific instances where another solution might be more suitable.

If your organization has bandwidth issues, or you operate in locations where a stable internet connection is hard to find, traditional phone lines may be more reliable (but not cheaper) options for you.

However, there are multiple strategies that will allow you to create the perfect environment to deploy session initiation protocol trunking regardless of your location. 


If you are planning to make the switch to SIP call trunking but are not sure if your organization meets the requirements to make the switch, contact us. We will provide a free business assessment and scope a detailed and customized plan to allow you to experience the full power of SIP trunking. 



What is the Difference Between SIP Trunking and VoIP? 

VoIP (Voice Over Internet Protocol) refers to any phone call that is made over an internet connection or internet connection protocol. 


On the other hand, SIP Trunking is one of those protocols. VoIP refers to the type of phone call you are making (internet call) while SIP is the protocol used to deliver that call. 

VoIP Protocols BTI

SIP VS VoIP: Key Differences



  • Is a protocol within VoIP.

  • Allows you to send all types of media.

  • Is a family of technologies designed to deliver voice calls through internet protocol networks.

  • Sends only voice messages.

  • Needs a computer, adaptor, or specialized phone to work.

What Features Should You Look for When Choosing a SIP Trunking Service Provider? 

Each SIP trunk service provider offers different features and prices. Here is a list of features you should consider before choosing your next provider. 

Call Metrics  

Having data on the calls you are making is crucial to boosting your team's efficiency. Before choosing a provider, ask what call metrics are available and evaluate how they can help your organization.  

Customization and Integration 

Your SIP Trunk service provider should be able to customize and integrate session initiation protocol trunking to fit your unique business needs. Here at BTI, we can create a personalized solution that fits your business needs and budget. 





Having strong security measures is crucial to ensure regulatory compliance and data safety. When talking to your potential provider, make sure that their solution leverages at least data encryption to ensure your data is safe.


Number Management  

Make sure your SIP Trunk service provider can transfer your phone numbers and add new connections to a centralized platform to ensure your migration is hassle-free. 



Summary: What is SIP Trunking?  

Session initiation protocol trunking is a powerful and modern technology that has revolutionized the way businesses communicate. We have covered various aspects of SIP trunking, from what it is and how it works to its benefits and comparison with other technologies like DID and VoIP.


SIP trunking offers numerous advantages over traditional phone systems, such as cost savings, scalability, and flexibility. However, it depends on your business' specific needs and goals to determine whether call trunking or traditional phones are the best option for you. 


That's why we highly recommend reaching out to our team at BTI to discuss your unique requirements and receive a customized solution for your business.

With our reliable and secure SIP trunking services, you can experience improved communication efficiency, enhanced customer satisfaction, and increased profitability.  

So why wait? Contact us today and take your business communication to the next level! 



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