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What is a SIP Trunk?

Arlen Peterson - Wednesday, April 10, 2013 |

What is a SIP Trunk? SIP trunks would be best described as internet dial tone.

SIP stands for Session Initiation Protocol.

When a button on the telephone set is pushed, a request is sent to a server and dial tone is sent to the telephone system via the internet.

SIP trunks as well as copper trunks can be used to build a hybrid telephone system. This means copper as well as internet lines are being used. SIP trunks are at least half the price of copper lines.

Here are some of the benefits of having SIP trunks.

Direct in Dial numbers. These numbers send calls directly to a telephone set rather than wasting the receptionist’s time redirecting personal calls.

Pairing intercom numbers with cell phones. Internal or external calls ring a desk set and a cell phone at the same time.

Bursting. If the SIP trunks are busy and another call tries to come in, the server will process that call to the system thru a temporary SIP trunk connection.

Fail over. If there is a power failure or the network server fails, all SIP calls will be sent to a cell phone.

Long Distance. SIP long distance charges are as low as .04 cents per minute for North America.

There are additional benefits but these are thought of as the “big ones”.

What have you heard about SIP trunks and what they might mean for your business? I'm always interested in what businesses think of new technologies.

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