What Is SIP Trunk? Why Smart Businesses Are Switching in 2026
Every month, thousands of Indian businesses overpay for PRI lines and multiple phone connections that cost far more than they need to. This guide breaks down what SIP trunk is, how the call flow actually works, and why it's replacing rigid, hardware-heavy phone systems. It also covers a side-by-side comparison of SIP trunk vs traditional PRI, who benefits most from making the switch, and what to check before picking a provider.
Ready to cut your calling costs? Read the full breakdown on CallerDesk's blog: https://callerdesk.io/blog/what-is-sip-trunk/
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