SignalLine AI
I'm a…

AI phone agents for surveys, customer calls & smart reception.

Automate outbound calls, collect customer feedback, qualify leads, and handle inbound enquiries with natural AI voice agents that work 24/7.

What you'd see
Uptime24 / 7
Concurrency1,000+
Languages15+

Indicative ranges from pilot deployments. We'll calibrate to your study.

Sample call · Appointment reminder — dental practiceLive call
0:00
0:29
AIHello, this is Sarah calling with a courtesy reminder from Clearview Dental Practice. I'm calling to confirm your appointment scheduled for this Thursday at ten thirty with Doctor Patel. Can you confirm you'll be able to attend?
PatientYes, that still works for me. Thursday at ten thirty with Doctor Patel — I've got it down. Anything else I need to know?
How it works for founder / operators

You bring the questions. We bring the callers.

4 phases · ~ 5 working days
01

Tell us the use case

Outbound surveys, inbound reception, lead qualification, follow-ups — describe the call you wish you could staff.

02

We script the agent

Branching logic, escalation rules, voice and tone tuned to your brand. Sample call back in 48 hours.

03

Plug in your stack

Your SIP trunk, your CRM, your scheduler. Calls fire on the triggers you already have wired up.

04

Watch it run

Live dashboard, transcripts, outcome codes. Hand-off to a human whenever the agent isn't the right fit.

The objection we get the most

“Will it sound robotic?”

It's the right question — most AI callers do. And robotic voices don't just sound bad, they hurt your data: respondents disengage, give shorter answers, break off mid-call. Three things we engineer around — and a real, unedited recording below so you can judge for yourself.

REAL · UNEDITEDWestside Coffee — pilot survey1:43
0:00
1:43
AI · SarahHi! This is Sarah calling from Westside Coffee — do you have two minutes for a quick five-question feedback chat about your recent visit?
CustomerHi, yep — I've got time.
AI · SarahBrilliant, thanks! So, how would you rate your last visit to Westside on a scale of one to five?
CustomerI'd give it a four.
AI · SarahLovely — and how often do you visit Westside in a typical month?
01

Latency under 600ms

Most AI callers wait 1–2 seconds before responding. Real people don't. We tune turn-taking so the conversation feels natural — interruptions and all.

02

Disfluencies, on purpose

A respondent saying "uhh, I dunno, maybe twice" is a real answer. The agent acknowledges, parses, and moves on — without restating the question robotically.

03

One voice per study

Voice locked per project. No mid-call voice swaps, no mismatched accents to a target market.

What you get back

Every campaign ends with a report your team can actually forward.

KPIs, sentiment day by day, drop-off through every question, themes clustered from open answers, and issues with concrete improvement recommendations — packaged into one shareable link your boss can read in two minutes.

See the example reportWestside Coffee · Q1 2026 (fictional)
Other ways teams use SignalLine

Anywhere a phone call still does the job— but you can't staff it.

Don't see your use case? It probably still works — get in touch.

Lead qualification

Calls inbound sign-ups, asks qualifying questions, routes hot leads.

Market research interviews

Structured phone interviews at scale, with full transcripts.

Recruitment screening

First-round phone screens and candidate availability checks.

Debt / payment reminders

Friendly reminder calls and payment-link follow-ups.

Support ticket follow-up

"Did we fix the issue?" calls after tickets close.

Waitlist callbacks

"A slot opened — do you still want it?"

Event RSVPs

Confirming attendance, dietary requirements, accessibility needs.

Order / delivery confirmations

Verify details with the customer before dispatch.

Customer win-back

Calls to lapsed customers — see what brings them back.

Onboarding check-ins

"How's your first week going?" calls a few days in.

Data verification

Confirm contact details and update records on file.

Public consultation surveys

Citizen engagement for councils and public-sector teams.

Patient appointment reminders

For clinics, dentists and outpatient services.

Voting / polling

Opinion polls and structured surveys.

Something else

If it's a phone call, we can probably do it. Tell us about it.

Live callWant to hear it for yourself?
Built to be trusted

Compliant by design — not by promise.

Calling windows, suppression lists, retention policies, consent capture and human-handoff triggers are configurable per campaign. Every call is transcribed and logged. Hand the file to your audit team.

UK GDPRMRS CodeISO 27001 (in progress)UK / EU residencySSO / SAML
Slots into your stack

Your CRM, telephony, and reporting.

CRM
Salesforce, HubSpot, Dynamics
Telephony
Major SIP trunks
Schedulers
Calendly, Cal.com
Analytics
Power BI, Tableau
Identity
Okta, Entra, SAML
Custom
Webhooks, REST, n8n
Ready when you are

Send us a script. Hear a sample by Friday.

A 20-minute call, your real questionnaire, and a free trial at our cost. That's the offer.

Call Thalia · +44 20 4511 4077