SIP Trunk - The Advanced Voice Solution For Easy Scalability

To prepare an SIP trunking setup, you’ll need the following:

• An active internet connection.
• SIP compatible PBX (Private Branch Exchange) box, a.k.a IP PBX.
• VoIP phone system (or VoIP adapters if traditional telephones are in use).

You need at least one SIP channel for every call happening at a given time. For example, 50 simultaneous calls will require 50 channels. The more your company grows, the more calls you will send and receive. As a rule, large companies will need more SIP channels than smaller businesses.

At least one SIP channel for each on-going call at any given time is crucial.

For a simple calculation, we can multiply the number of simultaneous calls that have to be made by the ‘loaded’ bandwidth.

For example, for 8 SIP trunks with a G.729 Codec, we’ll need 8*(31.2) kbps or 697 kbps worth of bandwidth.

The process of SIP trunking eliminates the need for having a physical connection to a telephone company. This includes no hardware, wires, or circuitry for maintenance to the PSTN.

An SIP trunk is installed virtually over the existing internet connection. Therefore, conventional analog phone lines are not required.

SIP trunking is an important process that establishes Voice over Internet Protocol calls. It’s a service that connects the existing Private Branch Exchange (PBX) to the internet. Additionally, it enables businesses to use the on-premise PBX box.

SIP trunk is a virtual connection between the PBX equipment and VoIP.