What is SIP, and what are SIP Trunks? Perhaps most simply stated, a SIP trunk is a data network alternative to traditional telephone lines, and SIP is the protocol (language/format) utilized. Think of SIP Trunks as your “telephone lines”, your connection to the PSTN (Public Switched Telephony Network. Unlike the traditional telephone network, a SIP trunk allows connectivity over the Internet or Private network to the PSTN via SIP trunking service. This allows infinite scalability, no longer will you need to purchase 24 lines to accommodate the addition of five or ten new lines!
The benefits to a SIP trunk:
- Eliminates costly PRI (Primary Rate Interfaces) subscriptions and long term contracts.
- Reduced investment in proprietary and specialized hardware.
- Optimal utilization of bandwidth by delivering both data and voice in the same connection
- Maximum flexibility in dimensioning and usage of lines as you avoid having to buy capacity in bundles of 23 lines (T1s)
- Free local and long distance calling within continental United States and Canada
- Low international rates
- Optional redundancy with multiple service providers and links
For a more detailed discussion of SIP Trunks, please click here for more info!