SIP Trunking is a technology that allows businesses to connect their phone systems to the internet using Session Initiation Protocol (SIP). This enables voice calls, video calls, and messaging over the internet instead of traditional phone lines, making communication more flexible and cost-effective. By using SIP trunks, companies can easily scale their communication needs, adding or removing lines as necessary. This system also supports features like call forwarding and voicemail, enhancing overall productivity. With SIP Trunking, businesses can streamline their operations and reduce costs associated with traditional telephony services.