Beware of imposters: getringdesk.com is the only official RingDesk site.
RingDesk

SIP Trunk

A virtual phone line that delivers inbound and outbound calls over the internet using the SIP protocol.

Book a 20-min call → Browse all terms →
Read ~1 min Definition + 2 lines of context.
Cluster telephony See related terms below.
Updated 2026 Reviewed every quarter.
Definition

A virtual phone line that delivers inbound and outbound calls over the internet using the SIP protocol.

In context

AI receptionist platforms use SIP trunks (or carrier APIs like Twilio Voice) to connect to the public phone network. Direct SIP delivery is the fastest path to the AI — bypassing the typical PSTN ring delay — which is how RingDesk hits 1.8s pickup.

Terms near this one.

Same cluster, often confused, or referenced together in customer conversations.

Port-Out The FCC-regulated process of moving your existing phone number from your current carrier to a new one.Pickup Time The number of seconds between when a call rings and when the line is answered.Fallback Destination A guaranteed phone number calls forward to if the AI receptionist platform itself is unreachable.
Start trial →

14 days free.

Live the same morning. Cancel any time.

Start trial
Open calculator →

How much are missed calls costing?

Drop in your call volume and average ticket — see your weekly leak in twenty seconds.

Open calculator
Read the guide →

How to never miss a call again.

A short field guide on the four moves shops use to lock in 99% pickup.

Read the guide

Now stop reading. Hear it answer your line.

Start 14-day trial → See pricing →

Setup takes an afternoon. First booked call covers the month. Cancel any time.