What is SIP Trunking (and Why Should I Care About it)?

Session Initiation Protocol (SIP Trunking) is generally the use of VoIP (voice over IP) to facilitate a private branch exchange (PBX) connection to the internet. In this case, the internet replaces the trunk of a conventional telephone, allowing a company to communicate with mobile and fixed telephone subscribers across the world.

SIP is simply an IETF standard to initiate interactive user sessions of multimedia. A trunk is a link or line that carries several signals at once, hence connecting major switching nodes or centers in a communication system.

Making calls

SIP Trunking has been helping various businesses save a lot of money by allowing them to use their already in place internal or intranet communication system in accessing outside phone lines and the internet. This system completely replaces the traditional phone system. It also directs outgoing and incoming data or calls to the company’s private network or an internet phone provider. It’s no wonder businesses are turning more and more towards SJP Trunking as a solution for their growing business.

The basics of SIP Trunking

When communicating with a PBX of a business, the Session Initiation Protocol does the following:

  • Easily shows a phone system the dialed number and where it was dialed from,
  • Keeps up with the area of each line,
  • Determines whether a line is unavailable, free, or in-use
  • Allows both systems of communication to know when a call has been transferred or ended,
  • It automatically directs information to its right place, that is, fax, call waiting, and voicemail to mention some,
  • Tells the PBX and the ITSP the expected action

For all external calls, often a public switched-telephone network (PSTN) deals with these parameters for residences and businesses. Having a communication system which maintains these parameters allows a business do a lot of things with their only existing system without incurring extra costs. A real plus point when businesses are looking to every area to cut costs and increase profits.


Benefits of Using SIP Trunking

As mentioned above, SIP trunking cuts your communication costs – in half, more or less. Here are more benefits of SIP trunking:

SIP Trunking Improves Productivity

Using SIP Trunking can increase productivity of your business by adding more functions to your existing system. With it, various businesses can make calls right from their intranet that includes long and local distance. It can also help businesses send mails, videos, and text messages externally and also conduct internet searches on the existing system.

It Requires Only Three Services

Basically SIP trucking needs only three services, namely: ITSP, qualified installer, and the internet. The ITSP is used as the operator of the switchboard to receive and send data and phone calls between the IP address of a business and an external phone line or IP. It is also used to provide various telephone numbers for the company.

It Doesn’t Need Extensive Equipment

SIP Trunking service only requires VoIP phone system, which understand the information given by the trunk. This means that older analog systems can too connect using a gateway of a SIP, but businesses won’t fully benefit from SIP. These SIP gateways can translate information into contexts that an analog phone system can understand. Since the protocol offers real-time data information such as call waiting ID, video images, or caller ID, companies usually miss out on these great benefits of using analog systems.


Conclusively, SIP Trunking can also decrease a company’s phone expenses. Businesses save a lot of money by accessing the ITSP using SIP. This is because each phone must contain its own line for PSTNs, thus saving business the cost of maintaining these lines. Visit Amcom for SIP trunking and see what benefits your business could take advantage of. Their great reputation and high level of service will ensure you make the transition an easy one.