SIP PRI GATEWAY (Session Initiation Protocol) is also known as the trunk PRI Gateway. The primary benefit of SIP PRI integration is that it helps in the multi-routing of calls and is also fair and economical for every scale of business. There are various SIP PRI gateway providers like Tata, Airtel, and Vodafone that are useful for companies having substantial savings for both local and international calls. Our company, Asfera Technologies, provides a trunk PRI gateway for call center companies, & we have served more than 500 businesses & helped them scale their businesses nationally & internationally.