Connect your Twilio number to Kipps AI voice agent for Outgoing calls
Connect your Twilio number to Kipps.AI to power AI-driven outbound calls for sales outreach, appointment reminders, and proactive customer engagement.
Introduction
Connecting your Twilio number to a Kipps.AI voice agent lets your AI place outbound calls on your behalf — appointment reminders, lead follow-ups, order updates, renewal nudges — through natural, two-way conversation instead of a static recording. Outbound uses SIP trunking rather than the simple webhook used for incoming calls, so the setup involves a few extra fields: a termination URL, a SIP trunk username, and a SIP trunk password.
This guide is for teams already using Twilio who want their Kipps.AI voice agent to initiate calls rather than only answer them. Outbound calling is a different operational posture from inbound: instead of a caller reaching you when they're ready, your agent reaches out on your schedule — which means consent, timing, and call cadence matter in a way they don't for inbound support lines. We cover the setup and those responsibilities below. If you want your Twilio number to receive calls instead, see our incoming-calls guide.
Prerequisites
- An active, funded Twilio account. Outbound calls draw from your Twilio balance, so billing needs to be current.
- A Twilio phone number with outbound voice enabled, ideally already used or intended for programmatic calling rather than a general-purpose line.
- A Twilio SIP trunk (Elastic SIP Trunking) configured, with the termination URI, trunk username, and trunk password on hand — you'll need these to complete the Kipps.AI side of the setup.
- A Kipps.AI account (sign up here) with a voice agent built specifically for your outbound use case, tested in the simulator before it's pointed at real phone numbers.
- A clean, purpose-built calling list. Outbound campaigns work best with an accurate, deduplicated list tied to a clear, expected reason for the call.
- A working understanding of consent and calling-hour rules in the markets you're calling into — see Best Practices below.
How to Get Started with Twilio Outbound Calls on Kipps.ai
Step 1: Log in to Kipps.AI
Log in (or sign up) at Kipps.AI.
Step 2: Start the Twilio outbound integration
Select or create the voice agent you want to place these calls, and confirm you're integrating for outbound rather than inbound.
Step 3: Go to the Phone Number section
Step 4: Click "Connect phone number"
Step 5: Enter a nickname and your Twilio number
Name the connection after the campaign or use case (e.g., "Renewal Reminders — Twilio") so it's easy to identify later.
Step 6: Save the telephony integration
Step 7: Copy the Kipps SIP URI
You'll paste this value into the termination URL field on the Twilio side in Step 9 — it's what tells Twilio where to send calls your agent initiates.
Step 8: Enable outbound calls
Step 9: Fill in the termination URL (SIP URL)
This is the same SIP URI you copied in Step 7.
Getting this value exactly right is the most common source of setup errors — copy it directly rather than retyping it.
Step 10: Fill in the SIP trunk username
Find this credential in your Twilio Elastic SIP Trunking settings.
Step 11: Enter the SIP trunk password
Handle this credential like any production secret.
Step 12: Enable outbound SIP
Once enabled, your agent can place calls through this Twilio number. Test with a small batch of calls to your own phones before pointing it at a live list.
Troubleshooting
- Outbound calls fail to place. Verify the termination URL exactly matches the Kipps SIP URI, and that the SIP trunk username and password are correct and current in Twilio.
- Calls place but drop immediately. Usually an authentication mismatch — check whether the SIP trunk credentials have been rotated or the trunk itself has been modified since you copied the values.
- Calls connect but there's no audio, or one-way audio. Typically a network or codec path issue between Twilio and the receiving carrier. Test across multiple destination numbers to isolate whether it's carrier-specific.
- A specific region or carrier shows a high failure rate. Check Twilio's call logs and error codes for that route — some carriers apply extra filtering to high-volume programmatic traffic.
- Recipients report your number shows as "Spam Likely" or similar. This is a carrier-side reputation signal tied to calling patterns on that number, not a Kipps.AI setting — steady, expected call volume tends to fare better than sudden bursts.
- SIP trunk looks connected in Twilio but calls still don't place from Kipps.AI. Confirm outbound SIP is specifically toggled on in Step 12 — saving the credentials alone doesn't activate outbound calling.
If issues persist, contact kipps.ai/contact-sales with your account details and timestamps of failed calls.
Best Practices
- Test with a small batch before scaling. Run 10–20 calls to verify script accuracy, audio quality, and answer handling before pointing the agent at your full list.
- Respect consent and opt-out requests. Only call numbers with a legitimate basis for contact — existing customers, opted-in leads, people expecting a callback — and remove anyone who asks not to be called again, promptly and permanently.
- Observe calling-hour restrictions. Many regions restrict when outbound calls, especially automated ones, can be placed. Build allowed calling windows into your campaign scheduling rather than relying on manual discipline.
- Understand the regulatory landscape for your market before scaling a campaign, particularly for regulated sectors like finance and healthcare. Rules on AI-assisted or automated outbound calling vary by country — when uncertain, consult counsel familiar with telemarketing regulation where you operate.
- Track answer rates and delivery metrics, not just connectivity — a falling answer rate is often the first sign of carrier filtering, well before calls start failing outright.
- Give the agent a graceful exit for objections. If a recipient asks to stop being called or wants a human, the agent should end the call respectfully and log the request rather than pushing forward with the script.
- Spread volume across numbers for large campaigns to reduce the odds of one number being flagged for high call frequency.
Frequently Asked Questions
Incoming calls use a webhook so Twilio knows to send calls to Kipps.AI. Outbound calls use a SIP trunk, requiring a termination URL, username, and password so your agent can place calls out through Twilio.
Yes — treat AI-placed outbound calls with the same consent standards as human-placed ones. Only call people with a legitimate basis for contact, honor do-not-call requests, and check the specific rules that apply in your market before scaling.
Yes, but each direction is configured separately in Kipps.AI — you'll typically set the inbound webhook and outbound SIP trunk up independently, even on the same number.
A properly configured agent recognizes the request and transfers to a live agent when one is available, or logs a callback request when it isn't.
Once the SIP trunk is verified with a small test batch, most teams launch within the same day — the main variable is how much testing your specific script and list require.
Get Started
Twilio SIP trunking paired with a Kipps.AI voice agent turns outbound calling into a consistent, scalable process instead of a manual grind. Talk to our team about setting up your first campaign, or explore the platform at kipps.ai.
