SIP stands in short for Session Initiation Protocol and is a new and innovative technology in the world of telecommunication. In the past, more specifically 19th century, when telephone lines were first established and telegrams were still used in the remote West, miles of copper cables were needed to establish a communication line between two states, with a central basis intercepting the calls and putting it forward to the required address. Times have changed drastically since then of course, and the need for quality communication has risen more and more, not just between people, but most often within the same company between different branches. And this is where the story starts, as SIP trunking most often is used by businesses for a better connection and more intercepting and simultaneous calls. Therefore, in the text below, we’ll explain the basics, and how to better understand this technology.

The classic SIP trunking situations/scenario

Imagine a company, spreading across several states within the US in different locations and through different time zones. Imagine having one facility, for example, a branch of the company in LA and the headquarters in New York. They are both parts of the same organization/company and are different offices in two different states. Usually, they are connected through a WAN and this works most of the time, without problems especially if John is making a call to Mary in LA or Mary to John in New York. The problem is, when Mary has to call someone else or John is receiving a call, usually these calls then go through PRI to the PSTN (Public Switched Telephone Network), which then connects the call and directs it to some outside phone. So if Mary is calling someone, or someone is calling John, this is the usual way they get their access to the outside world.

SIP trunking changes this by replacing the IP connections to the WAN, and the WAN becomes the SIP trunking provider (the company offering the service) and they are the ones handling the voice interconnections out to the PSTN, making the PRI obsolete. It is basically a safe way to deliver voice communication throughout your enterprise via an IP connection, drastically lowering the annual costs on telecommunication and connecting the whole company.

Call volume

The thing is, you are no longer bound to any kind of physical connection and can make and receive as many calls as possible. For example, your enterprise or company is interconnected with all the facilities and branches but also has to establish intercommunication with other companies as well, receiving calls and exchanging them. SIP trunks can easily be linked with the customer’s PBX. PBX is short for Private Branch Exchange, meaning your customer company has an already established private telephone network to exchange calls within their enterprise, securing a private and stable connection. Therefore, your SIP trunk can be linked to their PBX system, and this functions when a VoIP service (Voice over Internet Protocol) uses SIP trunks to connect channels to the customer’s private branch. This dramatically increases capacity, and it actually means you may utilize hundreds of thousands of voice channels if you expect your firm to make such a large number of outgoing and receiving calls. This technology essentially differs from the usual ones used, as it relies on IP technology and not copper, or optic cable physical connections. Transmitting calls via a data network or IP connection allows for more interchanging calls, not only between the company itself and its many branches but also between it and other customer companies, allowing even conference calls if needed.

The best part for sure is the ability to use the same network for exchanging a variety of information, not only calls but also pdf, ppt, and other files and documents. The advantage is, if there is some problem, only one network is getting repaired.

What use do you have from it?

Generally, as said before, the number of calls you can make or the volume of calls drastically rises, and you can easily establish a quality connection and make sure your communication is top-notch. Now, for better collaboration and better understanding within your company and with other companies as well, a secure network to place voice calls through channels and exchange data is important and reduces certain costs. How come, you might ask? Usually, companies spend a little fortune on calls placed abroad and have no real overview of the costs; when it comes to using a SIP trunk, you can expect the bill to be cut in half the moment you go for this service.

As it relies on an IP connection rather than a physical one, you can place calls abroad and can make as much as you need. You can quadruple your voice channels without any physical upgrades and you can expect to save a lot of money by doing so.

It may appear perplexing at first, but it essentially assists the firm in growing, saving money, and establishing a stronger internal and external connection at a reduced cost and faster speed.

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