What is SIP calling and SIP trunking?

Communication is a vital aspect of every successful business or organisation. The quality of your communication with colleagues, customers, partners, vendors, prospects and other stakeholders has a direct impact on your organisation. If you do not have proper systems that can support fluid communication either because they are not up to date or they aren’t reliable, your organisation will suffer. Phone calls are a big part of business communication. An Inefficient and expensive phone system will not only cost you money but also productivity, reputations and even business.

To avert this challenge, more businesses are now considering SIP calling and SIP trunking. However, many business owners and leaders are still stuck with some all too familiar questions – what is SIP calling? What is SIP trunking? How can SIP calling and SIP trunking help my organisation?

Well, in this article, we will take a closer look at this technology and its benefits to an organisation to help you make an informed decision on whether to move to SIP calling and SIP trunking.

What is SIP Calling?

SIP calling, also referred to as Session Initiation Protocol calling, is a process in which voice calls are transmitted over a SIP channel or a SIP trunk. From the onset, it is important to note that SIP calling and VoIP are not the same thing. However, they do use similar technology in the sense that SIP calling harnesses the internet protocol (IP) to transmit your analogue call traffic over an internet connection. But, they address different needs even though both can handle voice, instant messaging, video and other data.

How Does SIP Calling Work?

To understand how SIP calling works, you first need to understand how the traditional phone system works. Essentially, a traditional phone system has three parts in sequential order;

PBX – Private Branch Exchange which is the system that manages calls on-premise

PRI lines – Primary Rate Interface lines that connect your calls to the PSTN

PSTN – Public Switched Telephone Network which is the network that routes/directs calls to their destination.

With SIP calling, PRI lines are no longer a requirement. A SIP trunk, which is a phone line installed virtually over your internet connection uses the SIP protocol to complete the link. The SIP trunk then uses your internet connection to connect your PBX to the PSTN thus bypassing/eliminating the need of having PRI lines.

What is SIP Trunking?

PRI lines were initially created to handle the increasing complexity of having internet and landline connections running through the same PBX hardware initially meant for voice only. PRI lines have since been phased out by SIP Trunking which is easier to implement, has lower installation and operating costs and more capable of handling voice-only data traffic.

SIP trunking, therefore, provides a better path on which an on-premise telephone system can access the PSTN using an internet connection rather than PRIs or traditional telephone lines, often at a much lower monthly cost. SIP trunks take advantage of the flexibility provided by cloud-based communication to expand or contract in line with the call activity and needs of a business.

What are the Benefits of SIP Calling and SIP Trunking?

Cost-effective Communication

If you are not using SIP calling, what is your current business phone bill? Imagine paying only 30% of that. That is what SIP trunking allows you to achieve. Sip calling eliminates worries about your phone setup including installation, maintenance and disruptions so you can focus on improving your business communication.

Easy Scalability

Using SIP trunking means that everything happens over the internet including calls and video conferencing. Therefore, if you hire more employees or your organisation expands, you do not need to buy more physical lines. You can easily add more lines yourself or with the help of your SIP provider within a few minutes. You can also reduce the number of lines as need be.

Improved Flexibility and Productivity through Unified Communications

Studies have shown that using unified communication can save a business up to 115 minutes per day for each user. A SIP phone system helps you create a unified virtual presence that is synchronized and centralised rather than having to switch between communication channels. This results in better productivity, collaboration and efficiency.

Reliable, High-Quality Calls

Physical landlines are prone to many causes of disruptions – power outage, bad weather, system failure etc. SIP ensures you can receive calls even in these unpredictable scenarios due to its redundancy that automatically re-routes your calls to other employee mobile phones or other locations

Excellent User Experience

The responsibility of setting up and managing SIP calling falls to your provider. Additionally, you can manage everything about your SIP account from a simple interface without the need to master new technologies or train your employees. It gives you a user-friendly way to control the entire communication system of your company.

So, what is SIP calling and SIP trunking? I guess we can now agree that it is a good idea for your organisation. Talk to AdEPT today to learn more about what Sip calling can do for your organisation.

Written by Sami Malik

Marketing Campaigns Manager