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SIP Trunking and Its Flexible Implementations

The last decade has witnessed many industrial revolutions. Unified Communication and its changing forms are one of those significant revolutions. The trends of communication have indeed changed a lot than it was in the early 90’s. Especially, today if we zoom into the flow of communication held between similar or different types of businesses, radical transformations can be noticed with the types of technology they follow, the services they offer, the way they interact, their pricing strategies and much more. Similarly, the technology of trunking also holds a special position among them. However, recently its evolution has grown to be of major significance.

According to the latest trends, when we discuss about business communications, the very famous theory of Darwin “Survival of the Fittest” strikes our minds. This implies that as the industries are getting competitive with every sunrise the expectations from the evolving technologies are also increasing accordingly, hence the technology that best fits the industry is going to survive till the end. One of the biggest examples is the growing SIP Trunks. If we dig deep into the SIP Trunk Technology we may find that its original implications have gone much beyond the general communications. Confused?

Let’s just start with knowing, What is SIP and Trunking?

SIP (Session Initiation Protocol) is a signaling communication protocol. It is mainly used to create, modify and terminate sessions of a single or number of multimedia communication running over Internet Protocol networks. The number of multimedia elements may be data transfers, chats (voice as well as video), games and many more.

Trunking refers to the method in which set of communication lines or frequencies are shared by companies in order to deliver the access of their networks to their customers. It is mainly focused on delivering shared service rather than individualized service to the customers.

Thus, integrating both of the above mentioned technology and method together, gives birth to SIP Trunking, which ultimately becomes a service that is generally obtained from an Internet Telephony Service Provider. Hence, a successful connection between the legacy telephone system and networks of VoIP (Voice over Internet Protocol) is established.

Implementation of SIP Trunking:

Implementation of SIP trunking depends on the kind of PBX solution you wish to choose. However, today, with the availability of IP-PBX systems, SIP Trunking can be implemented in two major ways.

Implementation through IP-PBX systems

Such kind of implementation is generally opted by newly established organizations, where the entire infrastructure is to be set up freshly for the first time. Thus, in such case, if one requires to avail SIP Trunking service then it is advisable to adopt SIP enabled PBX equipment. Such kind of deployment of SIP Trunking casters to its growth as more number of people are convinced with adopting new IP-PBX systems or replace their conventional phone systems with IP-PBX. The advantages associated with using them includes the bundle of calling features they offer, Call queuing, call forwarding, call blocking/selective calling, music on hold, IVR(interactive voice response) etc., are some of them. In addition, IP-PBX systems are much more conveniently maintained and the costs involved are also very affordable. .

Implementation through Legacy PBX systems

Previously with the unavailability of a direct interconnection between SIP Trunking and traditional PBX systems the idea wasn’t possible to implement. But now, companies which are reluctant to desert their legacy PBX systems (those are working absolutely fine) can also implement SIP trunking with the help of a VoIP gateway. Once the VoIP gateway installation with the existing system becomes successful, the PBX can be programmed accordingly, so that all or selected calls over the SIP Trunking networks can be routed conveniently. Thus, it provides a highly cost effective solution, especially when it is about long distance or international calls. Moreover, other factors that might contribute to its cost effectiveness may also include the saved cost of hiring a new personal or re-instructing an existing staff about, how to work with an advanced system (IP-PBX)?


So, we saw that how SIP Trunking through its versatility, has become an ultimate delivery option for organizations working with VoIP technologies. We should be thankful to its inventors; for having created such an amazing technology that not only offers, cost effective solutions for long distance & international phone calling, but also empowers the users with the abilities of exploring ways of communicating with their partners located all around the world.

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