How to Help Your Customers Understand SIP Trunk Channels

SIP trunking is already a multi-billion-dollar industry with plenty of forecasted growth in its future. This trend comes as no surprise when businesses require reliable and scalable communication solutions to operate and stay competitive in a digital world. As a reseller, you’re perfectly poised to capitalize on SIP trunks and build your professional image around satisfying your clients’ communication needs.

According to Globe Newswire, the worldwide SIP trunking market is expected to grow at an annual compound rate of 14% over the next decade. Organizations are adopting SIP trunking to reduce calling costs, gain scalability and reliability, and enhance communication and collaboration for remote workers.

When using SIP trunk channels, an organization can reliably scale its calling and messaging capabilities and connect its distributed workforce. SIP trunks are a modern communication solution that allows clients to manage everything from a simple interface.

As an IT reseller, you can reap the benefits of this growing technology and become your clients’ one-stop shop for all their communication needs. Becoming an expert is easy as we explore SIP trunking to help you answer your clients’ questions and surpass their expectations.

What Are SIP Trunk Channels?

To understand SIP trunking, let’s take a look at the old technology that it’s replacing. Conventional communication solutions from traditional carriers relied on Primary Rate Interfaces (PRIs) to form a trunk that would run from the central office to a remote office. PRIs are limited to only 23 simultaneous communication channels each, requiring costly installations to meet the growing needs of businesses.

Session Initiation Protocol (SIP) trunks are virtually managed in the cloud and provide calling, video conferencing, messaging, and data transmission over a stable internet connection. SIP trunk channels provide near-unlimited simultaneous calling lines, depending on your client’s bandwidth and the number of SIP trunks leased. 

The technology is compatible with various virtual and IP-based private branch exchange (PBX) systems and most IP phones, software-based phones, and mobile devices. It allows authorized users to connect to the SIP trunk from anywhere with an internet connection.

How SIP Trunking Works

SIP trunking uses a network protocol to enable the transmission of digital data, including voice, video, messaging, and more, over the internet. Voice communication can be provided through a Voice over Internet Protocol (VoIP) service for clear, high-quality, and consistent calling.

A SIP trunk is a virtual container for communications. With SIP, physical trunk lines are no longer necessary to connect a phone system to a voice network. Your clients can communicate via virtual SIP trunks, offering up to 48 dynamically created channels per trunk.

Benefits of SIP Trunk Channels

Now that you understand how SIP trunking works, we can explore the benefits of SIP trunking for your clients. The following are some of the greatest perks of SIP trunking that your clients will want to know about. 

Cost Savings

Traditional phones, or Plain Old Telephone Service (POTS), can be costly, especially if your clients require long-distance and international calling. In the old days, businesses had to invest in hardware, installation, maintenance, and repairs. By switching to a cloud-based calling solution, businesses can reduce calling costs by as much as 75%.

Related: Why Your Business Should Consider Offering SIP Trunking Services

While SIP trunking charges vary between providers, the top reseller partners of SIP trunk channels offer multiple pricing plans with flexible options to fit any business. Your clients can save significantly using SIP instead of POTS. Investment in equipment is considerably reduced, and your client can easily scale its communications up and down with minimal financial consequences.


SIP trunking offers exceptional scalability. Your clients can leverage the scalability and elasticity of the cloud to increase and decrease their calling capacity to meet traffic. They can select the right plan for the minutes they need and leverage direct inward dialing (DID) numbers to ensure calls reach their intended recipient. Numbers and plans are provisioned instantly from a simple web portal.


Cloud-based SIP is more flexible than service from traditional carriers. Your clients can choose a local phone number for locations throughout the U.S., even if their offices are in another area. It also allows subscribers to change locations or switch to a distributed workforce and continue using the same DID numbers. Your clients can easily provision new phone numbers and change services or plans at any time.

Remote Capabilities

The flexibility and scalability of SIP trunking make it an ideal solution for distributed workforces. Authorized users can connect to the SIP trunk from a stable internet connection using telephony devices like IP phones, mobile devices, or softphones. It allows your clients to communicate and collaborate with a worldwide remote workforce. Using DID numbers, callers can seamlessly reach a remote employee from a local or toll-free phone number.

Centralized Management 

SIP trunking allows your clients to unify their communications in the cloud, allowing for central management of messaging, calling, video conferencing, and faxing. Communications will be available from a stable network connection and can be remotely monitored and managed.

The Most Common SIP Trunking Questions

Now that we’ve explained the top benefits of SIP trunking for your clients, we can answer some of the most commonly asked questions they’ll have for you. 

How Reliable is SIP Trunking?

With traditional carriers, an outage would require the phone company to investigate and repair the problem. SIP trunks provide businesses with the benefit of dynamic failover to another working network, ensuring business continuity. Traditional carriers had one route from end to end, but SIP calls are routed using the fastest path over the internet to increase dependability. 

How is the Call Quality?

SIP calls are made over VoIP, offering standard G.711 and efficient G.729 compression for the highest voice quality possible. SIP trunking also provides failover and quality of service (QoS) to ensure clear calls with less noise, echo, and loss.

Is SIP Trunking Secure?

While it may seem like cloud-based communication can leave your client vulnerable to malicious actors, SIP trunk channels offer encryption to secure the transmission of data over the internet. Partnering with a reputable cloud-based communication partner will ensure your clients’ systems are safe.

What to Look for in a Reputable SIP Trunking Partner

The right SIP trunking partner can help you offer a seamless communication solution to your clients. When you partner with a reputable SIP trunking platform, you’ll have the support you need to deliver tailored calling and messaging solutions. Ensure your SIP trunk provider offers the following features.

Simple White Label Program

A good SIP trunking partner will offer a simple program that lets you sell solutions to clients with less friction. Even if you are not an expert in communications, your partner can make it simple to deliver seamless solutions. The platform will handle the technical aspects of SIP trunking while you focus on sales and marketing.

Related: Unpacking the Benefits of SIP Trunk Services for Modern Businesses 

They can also offer resources to make selling easier and allow you to use your logo and business name on the product, web portal, and any communications sent to the client. As far as your subscribers are aware, it’s your quality solution from your professional brand.

End-User Support

The best SIP trunking platforms offer end-user support. When clients call for support, they’ll reach the provider but be greeted with your company name. The provider will help the client with any technical or billing issues without revealing they are speaking to a third party. Any emails will also feature your company logo to avoid confusion.

Hands-Free Billing and Payment

When you sell SIP trunking solutions from a reputable communications provider, provisioning, billing, and payment will be handled by your partner. Your job is to attract clients, explain the game-changing benefits, and sign them up for the service. The SIP trunking platform will handle any billing and taxes and deposit your earnings from each subscriber. You can gain a stable source of revenue from your clients with no frustration.

Compatibility With Clients’ Systems

SIP trunking offers excellent compatibility with existing PBX systems. You can be confident that any telephony devices, such as IP phones or mobile devices, will work seamlessly with SIP trunking. In addition, your clients will be relieved that they don’t need to replace their phone systems or devices to harness the power that SIP trunking offers.

SIP Trunk Channels Made Easy

Technologies like SIP trunking can be challenging to learn in depth. With the right reselling partner, you can master the basics and become a knowledgeable source for all your clients. SIPTRUNK makes it easy to learn about SIP trunking, from the very basics of the technology to explaining more sophisticated features like SIP trunk channels and DID. Our SIP reseller program makes selling SIP trunks simple. We handle provisioning, billing, end-user support, and payment so you can focus on building your brand, marketing, and selling. Get started with a private label SIP trunk program from SIPTRUNK.