What is SIP trunking?

SIP trunking is a telephony service from an Internet Service Provider (ITSP), which converged voice and data over a communication line, which offers easy access between the Internet and the Global Public Switched Telephone Network.

There are four components needed to successfully deploy SIP trunks: a PBX with a SIP trunk side, an edge device firm understanding of SIP, an Internet telephony or SIP trunking service provider, and the Public Switched Telephone enabledNetwork

Four components

- The telephone system
- Element Boarder Enterprise (EDGE)
- The ITSP
- PSTN

The PBX

PBX stands for Private Branch Exchange. This is a private branch exchange, a particular company or office, as opposed to one another that a common carrier or telephone company for many businesses or the public is in operation. In most cases, the IP-based PBX, communicating with all endpoints over IP, but can also be a traditional or digitalAnalog PBX. The only condition is that there is an interface that SIP trunking connectivity is available.

The enterprise border element (EDGE)

EDGE stands for member of the Enterprise. The board is the term we use to refer to a unified communication device such as a digital telephone line, a digital wireless phone or a softphone. The phone system on the local network to connect to the Internet through the element boundary or edge company.

The ITSP

ITSP stands for Internet TelephonyService Provider. An ITSP provides Internet services for data calls with Voice Over IP technology. Session Initiation Protocol trunking occurs at this level.

The PSTN

Internet Telephony Service Provider providing connection to the public switched telephone network to communicate with mobile phones and fixed line network. SIP Trunking is an action that the Internet Telephony Service Provider, which made for connectivity between the public switched telephone network and allowsEDGE.

Summary

Trunking is a service telephone service Internet Service Provider, the routes and transmits voice and data from the public switched telephone network in a telephone system. SIP Trunking works with direct SIP calls while moving between the PBX and the PSTN. SIP Trunking is an important service to host your VoIP phone system and its effectiveness is a major reason for the success of the technology.

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