A SIP trunk is a virtual phone line that connects a business phone system to the public telephone network over the internet, replacing traditional copper phone lines.
SIP (Session Initiation Protocol) trunking is the technology that carries business phone calls over the internet instead of physical copper lines. A SIP trunk acts like a bundle of virtual phone lines — your business can send and receive calls through it simultaneously, scaling capacity up or down without installing new hardware.
SIP trunks are the backbone of modern VoIP phone systems. Instead of paying for a fixed number of physical lines, businesses pay for capacity they actually use, often at a significantly lower per-minute rate than traditional PSTN (Public Switched Telephone Network) lines.
Ringuno is built on top of Telnyx's SIP trunking infrastructure, which provides carrier-grade call quality, global reach, and high reliability. This means your AI receptionist can handle multiple simultaneous calls without busy signals, even during peak periods.
For most SMBs, SIP trunking is invisible infrastructure — it's what makes virtual phone numbers, AI receptionists, and cloud-based phone systems possible. You don't need to manage it directly; Ringuno handles everything.
Join thousands of businesses using Ringuno to handle calls 24/7.
IVR (Interactive Voice Response)
IVR is an automated phone system that interacts with callers through pre-recorded messages and keypad inputs, routing them to the right department or information without a human operator.
Call Routing
Call routing is the process of automatically directing an incoming phone call to the most appropriate person, department, or system based on predefined rules or caller intent.
Virtual Phone Number
A virtual phone number is a telephone number that isn't tied to a physical phone line or SIM card — it routes calls over the internet to any device or system, anywhere.