If a company already uses Voice over Internet Protocol (VOIP) services within the organization, then savings are already being realized. When the company decides to expand, however, whether in terms of manpower or the number of offices, simple VoIP services might not be able to catch up. According to siptrunk.com, with more than five separate VoIP phones, there comes the point when Session Initiation Protocol or SIP trunking would be a better alternative.
SIP trunking is offered by an Internet telephony service provider (ITSP), which results in having a virtual PABX system. Unlike traditional PABX systems, the box does not reside within the premises, but in a server somewhere. This provides a convenient gateway and presence wherever the company would want it to. The server can be located in a country where the company would want to have a presence, especially for support calls or sales. There can be multiple numbers in Australia, Europe, as well as China and Japan. The ITSP can provide multiple telephone numbers for other countries, without the need for a physical office in those countries.
Since SIP trunking is based on VoIP, other native VoIP services are also available. These include instant messaging, chat, conferencing, multimedia, and emergency calls. It is also possible to set up multiple point video conferencing. The technology is rapidly growing with new services being added. Necessarily, the ITSP would be offering these to companies as the technology becomes available. Due to the competition, newer services can be offered without any additional costing.
SIP trunking services are big savings for companies. Either plenty of unified communications technology is bundled around SIP trunking, or these new technologies are added as standard features. Whether this is over a dedicated SIP trunking line passing through cables with other IP traffic and services, or through a virtual private network (VPN), the versatility of the technology allows for the transparent way it is transmitted.