Delacon tracks, records, analyses and routes the calls a human still answers; OneBookPlus is the Australian AI receptionist that actually answers them in an Australian voice, screens spam, sends a transcript, and books the job straight into your calendar. Pick the one that matches the job your phone isn't doing.
TL;DR
Delacon is an established Australian call-tracking, call-management and speech-analytics platform — running in Sydney since 1996. It measures, records and routes calls a human eventually answers, with dynamic number insertion, dual-channel call recording, deep marketing attribution down to the search word, ad and landing page, and AI speech analytics. It does not answer calls in a conversational AI voice or book appointments into a calendar.
OneBookPlus is an Australian-hosted AI receptionist that actually answers inbound calls and SMS 24/7 in an Australian voice plus 10+ languages, screens spam and robocalls, books and reschedules straight into your calendar, sends a full text transcript after every call, captures callers as leads, and can hand a live call to your phone with one tap — then books the job into the same platform that quotes, invoices and CRMs it. Flat $49/mo inc. GST (requires AI Companion $25/mo) with a free Australian number.
Who wins where: choose Delacon if your priority is measuring, recording and routing a high volume of human-answered calls with dynamic number insertion and forensic, keyword-level marketing attribution. Choose OneBookPlus if you want the phone actually answered in an Australian voice, spam screened, a transcript sent, and the booking made into the business that then quotes and invoices it — all for a flat price with no per-call or per-minute metering.
Key takeaways
5Side by side
The capabilities that matter when you’re choosing how your phone gets answered. Competitor cells link to the page that substantiates (or fails to substantiate) the claim.
| Category | Feature | OneBookPlus | Delacon |
|---|---|---|---|
| Answering | 24/7 AI answers inbound calls | Yes | No |
| After hours | After-hours & overflow lead capture | Yes | Rule-based routing only [src] |
| Booking | Books into a built-in calendar | Yes | No |
| Voice / accent | Australian AI voice & accent | AU voice | No |
| Phone number | Australian phone number included | Yes | Tracking numbers (no included line) [src] |
| Languages | Multilingual answering (10+ languages) | English + 10 more | No |
| Spam | Spam / robocall screening | Yes | Not documented [src] |
| Transcripts | Transcript per call | Full text transcript + intent | Dual-channel audio + transcription [src] |
| Handoff | Live human take-over to your phone | Yes | IVR transfer / geo-routing [src] |
| Call tracking | Dynamic number insertion (DNI) | No | Yes |
| Audio call recording | No (text transcripts) | Dual-channel [src] | |
| Keyword-level attribution | Per-number + UTM | Search word / ad / landing page [src] | |
| Platform | Booking flows into a full business platform | Quote, invoice & CRM | Tracking + analytics only [src] |
| Residency | Australian presence / data residency | AWS Sydney | Sydney since 1996; residency not stated [src] |
| Pricing | Pricing model | Flat, no metering | Contact sales (model not stated) [src] |
| Starting price (AUD, inc. GST) | OneBookPlus AI Receptionist | Delacon | |
| Australian-hosted AI receptionist that answers, screens spam, books and hands off live — then quotes, invoices and CRMs the job inside one platform. Capabilities per the OneBookPlus product. | Facts as published on delacon.io (call-tracking, speech-analytics, call-management, our-story pages); pricing is not published — contact sales. |
Where Delacon wins
Delacon is a serious, mature platform — running in Sydney since 1996, roughly 30 years in the Australian and APAC market — and it does several things OneBookPlus deliberately does not. Its dynamic number insertion, dual-channel call recording and keyword-level attribution (it tracks calls back to the search word, ad, landing page and campaign) give marketing teams forensic visibility into which campaigns drive phone calls — OneBookPlus only offers per-number tagging plus web-to-call UTM passthrough, with no DNI and no audio recording. Delacon's AI speech analytics is genuinely strong: dual-channel audio recording with separate caller-versus-agent analysis, auto-generated transcription, automatic call categorisation (sales enquiries, cost concerns, complaints), word-cloud and keyword search, sentiment scoring and confidence scoring for accurate categorisation — valuable for compliance and quality monitoring at scale. It also carries broad enterprise integrations (Google, Adobe, Salesforce, Power BI and more) and robust enterprise call management with IVR, geo-routing, automatic failover and email alerts. If your calls are answered by a team and your priority is measuring, recording and routing them, Delacon is built for exactly that.
Where the OneBookPlus AI Receptionist wins
Delacon's AI is analytical — it transcribes, categorises and scores calls a human already handled, and its routing is rule-based IVR and geo-routing. OneBookPlus actually picks up the phone and the SMS 24/7 in a natural Australian voice, screens spam and robocalls before they reach you, answers questions on your hours, services and pricing from your own knowledge text, and books or reschedules straight into your calendar — then texts the caller a confirmation and a self-service reschedule link. When you can't get to a call, one tap on the mobile alert transfers it live to your phone. That captured call then flows into the same platform that quotes, invoices and CRMs the job.
OneBookPlus is hosted in AWS Sydney with Australian recording-consent and AI disclosure built into the greeting, and it bundles the receptionist with your CRM, calendar and messaging — captured leads land in contacts and returning callers are recognised by their number. It's a flat $49/mo inc. GST (plus AI Companion at $25/mo) with no per-call or per-minute metering and extra conversations as simple top-ups, and a free Australian number is included from day one. Delacon's pricing is not published; you contact sales for a custom quote (its pricing model isn't documented), and the line is a tracking number, not an answered one.
A press-1 IVR menu lets callers choose English plus 10+ languages — Spanish, French, German, Italian, Portuguese, Mandarin, Hindi, Arabic, Japanese, Korean and more — each with a default neural voice. Every conversation comes back as a full text transcript with detected intent, an outcome, a summary and a positive / neutral / negative sentiment read in Insights — not an audio recording you have to re-listen to. Delacon, by contrast, gives you dual-channel audio recording and line-by-line analytics on calls a human handled, which is a different job from answering them.
Pricing, normalised
OneBookPlus AI Receptionist is a flat $49/mo inc. GST and requires AI Companion at $25/mo; extra conversations are simple top-ups, with no per-call or per-minute metering and a free Australian number included. Delacon does not publish pricing — there's no price page, so you contact its sales team for a custom quote (its pricing model is not documented; checked delacon.io/au). We don't quote unverified third-party estimates.
OneBookPlus AI Receptionist
All AUD, inc. GST. See plans on /pricing.
Delacon
Delacon pricing is not published; there's no price page and the pricing model isn't documented (checked delacon.io/au). Figures shown elsewhere online are unverified and not quoted here. Contact sales for a custom quote. delacon.io/au
FAQ
No. Delacon is a call-tracking, call-management and speech-analytics platform — it tracks, records, routes and analyses calls that a human still answers. Its AI is analytical (line-by-line transcription, automatic categorisation, keyword search, sentiment and confidence scoring), and its routing is rule-based IVR and geo-routing. OneBookPlus is the one that conversationally answers calls and SMS in an Australian voice, screens spam, and books straight into your calendar.
Yes to both. OneBookPlus answers in a natural Australian voice with recording-consent and AI disclosure built into the greeting, and it can also answer in English plus 10+ more languages via a press-1 menu. It includes a free Australian phone number (with port-in and toll-free 1800 options) and is hosted in AWS Sydney. Delacon provides tracking numbers for attribution rather than an answered, included business line, and while it has run in Sydney since 1996 it does not state Australian data residency on its public pages.
On three things OneBookPlus doesn't do: dynamic number insertion (DNI), dual-channel audio call recording, and keyword-level attribution down to the search word, ad and landing page. Delacon also has mature speech analytics (auto transcription, automatic call categorisation, keyword search, sentiment and confidence scoring) for compliance and quality monitoring, broad enterprise integrations (Google, Adobe, Salesforce, Power BI and more), robust IVR / geo-routing call management — and roughly 30 years in the Australian market since 1996.
OneBookPlus is a flat $49/mo inc. GST (it requires AI Companion at $25/mo to run the AI), with no per-call or per-minute metering and extra conversations as simple top-ups — and a free Australian number included. Delacon does not publish its pricing — there's no price page on delacon.io/au and its pricing model isn't documented; you contact its sales team for a custom quote. We don't quote unverified third-party estimates.
Partly, and we're honest about the gap. OneBookPlus has built-in call tracking with per-number campaign tagging, web-to-call UTM passthrough and an Insights dashboard — but not Delacon's dynamic number insertion or keyword-level attribution, and no audio recording. If forensic, keyword-level call attribution is your core requirement, Delacon is the stronger fit. If you want the call answered, screened and booked, OneBookPlus is.
Yes — as full text transcripts, not audio recordings. Each conversation comes with the detected intent, the outcome, a summary and a positive / neutral / negative sentiment read in Insights, and the caller is captured as a lead. Delacon, by contrast, offers dual-channel audio recording and line-by-line analytics on human-handled calls — recording and scoring rather than answering and booking.
For actually answering and booking calls — not just measuring them — OneBookPlus is the best Delacon alternative in Australia. Delacon is a mature, Sydney-built call-tracking and speech-analytics platform with DNI, dual-channel recording and keyword-level attribution, but those are tools for measuring calls a human answers. OneBookPlus answers in an Australian voice on a free AU number, screens spam, answers in 10+ languages, sends a transcript, hands off live to your phone, and books the job straight into the platform that then quotes, invoices and CRMs it — for a flat $49/mo inc. GST. Many businesses run both: Delacon to attribute the marketing, OneBookPlus to answer and book the call.
Delacon tells you about the calls you took. OneBookPlus answers them in an Australian voice, screens spam, speaks your customers' language, sends a transcript, and books the appointment — for a flat $49/mo with a free Australian number.
Free AU number included · 14-day trial · Cancel anytime
About this comparison
Feature claims about OneBookPlus reflect what is shipping today on onebookplus.com.au. Delacon pricing and feature claims were last verified against Delacon’s public Australian product pages on the date below; vendor pricing changes frequently, so check the Delacon website for your specific situation before making a decision.
Disclosure: OneBookPlus publishes this comparison and stands to benefit if you switch. We aim to compare like-for-like on capability and Australian tax compliance — if you spot something out of date, email hello@onebookplus.com.au and we’ll review it.
About the author
Founder & CEO, OneBookPlus
Bishal has over a decade of experience in digital marketing, web development, and small business consulting across Australia. Bishal regularly assists Australian small to medium businesses with software stack consolidation — including the trade-offs of moving from Delacon to an integrated platform. The comparison above is informed by direct migration experience, not a single read of the Delacon marketing site.
Last reviewed and updated: May 2026 by Bishal Shrestha
At a glance
Flat $49/mo inc. GST — Australian-hosted, number included
Contact sales — call tracking, recording & speech analytics
Delacon capabilities per delacon.io; items marked unavailable are not documented as conversational AI answering on its public pages.
Feature by feature
The things that decide how your phone gets handled — call answering, after-hours, AU voice, spam screening, transcripts and booking on one side; DNI, dual-channel recording and keyword-level attribution on the other.
| Feature | OneBookPlus | Delacon |
|---|---|---|
| 24/7 AI call answering | Yes | No |
| After-hours & overflow capture as leads | Yes | No |
| Books into a built-in calendar | Yes | No |
| Australian AI voice & accent | Yes | No |
| Australian phone number included | Yes | No |
| Answers in 10+ languages | Yes | No |
| Spam / robocall screening | Yes | No |
| Full text transcript per call | Yes | No |
| Live take-over to your phone | Yes | No |
| Booking flows into quote/invoice/CRM | Yes | No |
| Dynamic number insertion (DNI) | No | Yes |
| Dual-channel audio call recording | No | Yes |
| Keyword-level call attribution | No | Yes |
| Speech analytics & call scoring | No | Yes |
| IVR / geo-routing call management | No | Yes |
| Price | $49/mo inc. GST | Contact sales |
| Flat + top-ups | Custom quote |
Why switch
Delacon tracks, records and routes a call a human still has to answer. OneBookPlus answers it 24/7 in an Australian voice, screens spam, and turns it into a booking — so missed calls become jobs, not just data points.
Delacon is tracking + analytics. OneBookPlus books into a built-in calendar that flows straight into the platform that quotes, invoices and CRMs the same job — one caller, one thread, from missed call to paid job.
OneBookPlus answers in an Australian voice on a free AU number, offers English plus 10+ languages, and texts you a full transcript with intent, summary and sentiment. Delacon transcribes and records human-handled calls instead.
Delacon's pricing is contact-sales with no published price page and no documented model. OneBookPlus is a flat $49/mo inc. GST (plus AI Companion $25/mo) with simple top-ups and no per-call or per-minute meter.
How it works
With Delacon, the call is still answered by your team. Delacon's job is what happens around that call: it swaps a dynamic number into your ads so it can attribute the call to a search word, ad and landing page; it records the conversation in dual channel; and it routes or queues the call with IVR, geo-routing and failover. Afterwards its speech analytics transcribes, categorises and scores the call for compliance and quality. It is excellent at measuring and managing calls — but a human still has to pick up.
With OneBookPlus, the AI picks up. The call is answered in a natural Australian voice on a free Australian number, hosted in AWS Sydney, with recording-consent and AI disclosure in the greeting. The receptionist screens spam and robocalls before they ever reach you, answers in English plus 10+ more languages via a press-1 menu, and — this is the difference — books and reschedules the appointment straight into the built-in OneBookPlus calendar, then texts the caller a confirmation and a self-service reschedule link.
Because the booking lands inside OneBookPlus, it does not stop at the calendar. The caller is captured as a lead in your CRM (and returning callers are recognised by their number), the job can be quoted and invoiced from the same record, and after the call you receive a full text transcript with the detected intent, a summary and per-conversation sentiment — plus built-in call tracking that tags the number and passes web-to-call UTMs through. It is not Delacon's DNI or keyword-level attribution, and we say so plainly; it is enough to know which campaign a booked call came from.
And when a call genuinely needs a person, OneBookPlus sends a time-sensitive push to your mobile; tap it and the live call transfers to your phone. Delacon routes via IVR and geo-routing to whoever is rostered. The honest framing: if your priority is forensic call attribution and dual-channel recording across a team, Delacon is built for that; if you want the phone actually answered and the booking made, OneBookPlus is — and plenty of businesses run both.
Feature deep dive
Delacon's core is dynamic number insertion, dual-channel recording and keyword-level attribution — tools for understanding calls a human answers, plus IVR and geo-routing to send those calls somewhere. OneBookPlus answers the call itself in an Australian voice, then books and reschedules into its own calendar; the same record becomes a CRM contact, a quote and an invoice. One caller, one thread, from the missed call to the paid job — that's the whole point of an answering service that lives inside the platform that runs the business.
OneBookPlus answers in a natural Australian voice on a free Australian number, hosted in AWS Sydney, screens spam and robocalls before they reach you, and offers English plus 10+ languages via a press-1 menu. Delacon has been Sydney-based since 1996 and is a genuinely Australian company, but its product provides tracking numbers and analytics rather than a conversational AI that greets your caller in an Australian accent and handles them in their own language.
After each call OneBookPlus texts you a full transcript with detected intent, a summary and sentiment, so you can act without re-listening to audio. And the instant a call lands, a push hits your mobile — tap it and the live call transfers to your phone. Delacon gives you dual-channel audio recording and line-by-line speech analytics on calls a human handled, which is superb for compliance and coaching — but it is recording and scoring, not answering and handing you the live conversation.
Is it right for you?
Owner-operators who keep missing the phone.
If calls go to voicemail after hours, during jobs or at the school run, Delacon will tell you you missed them — OneBookPlus answers them. It picks up 24/7 in an Australian voice, screens spam, captures the caller as a lead, and books the appointment so a missed call becomes a booked job.
Businesses that want the booking to become a job.
If you'd rather the answered call turn into a calendar booking, a CRM lead, a quote and an invoice in one place, OneBookPlus books straight into the platform that does all of that. Delacon is tracking and analytics; it routes the call and measures it, but it does not book it into your business.
Anyone who wants a flat, predictable price.
If a contact-sales quote with no published price page makes your bill hard to predict, OneBookPlus is a flat $49/mo inc. GST (plus AI Companion $25/mo) with simple top-ups, no per-call or per-minute meter, and a free Australian number included.
When Delacon might still be the better fit:
If your calls are already answered by a team and your priority is forensic marketing attribution — dynamic number insertion, dual-channel recording and keyword-level tracking down to the search word, ad and landing page — or enterprise speech analytics for compliance and quality monitoring at scale, Delacon's specialism there is genuine and OneBookPlus does not replace it. Many businesses run both: Delacon to measure the marketing, OneBookPlus to answer and book the call.
Getting started
Claim your Australian number (or point a forward at it)
OneBookPlus includes a free Australian number you can stand up immediately, or port in your business line. If Delacon is dynamically inserting tracking numbers in your ads, leave that in place — just point the destination (or your after-hours / overflow forwarding) at the OneBookPlus number so the AI answers the calls Delacon is attributing.
Set up the greeting, languages and booking rules
In OneBookPlus, set the Australian voice, the languages to offer on the press-1 menu, your services and availability, and your spam-screening behaviour, then paste your hours, pricing and FAQs as knowledge text. Bookings drop straight into the built-in calendar — no Zapier flow or external calendar integration to wire up.
Run a week, then decide what each tool does
Watch the transcripts, bookings and captured leads roll in for a week. Most businesses keep Delacon for marketing attribution and recording where they need it, and let OneBookPlus own answering, screening and booking — or, if attribution wasn't the point, retire the tracking subscription once OneBookPlus is answering and booking the calls.