Extensions

Voice Channel Add-on

Your text agent gets a phone line, so callers can talk to it instead of typing.

Some customers will always prefer to talk rather than type, and a text-only agent sends them somewhere else. This add-on gives the agent you already run a phone line in your own telephony account. Callers speak naturally, the agent answers aloud with the same approved knowledge, and it transfers to a person when the call needs one. Recordings and minutes stay in your accounts.

  • Lets callers talk to the agent that already answers your chats
  • Transfers calls to a person when a human is needed
  • Runs on a phone number in your own telephony account
$2,500 10–20 working days
Telephone receiver resting on a blank notebook beside a tuning fork, a text agent given a voice.

What it is

The Voice Channel Add-on gives an existing text agent, such as a chat, messaging or action agent, a phone line with spoken conversations. Callers ring a number in your telephony account, and the agent answers aloud with the knowledge and rules it already uses. It includes a transfer to a person and is tested on calls with the parent product.

Why businesses buy it

If your text agent answers questions well, callers are the customers it is still missing, and they are often the ones ready to buy or book. Giving it a voice means one set of answers across chat and phone, rather than a second system with its own script to maintain. Phone calls need more care than a new inbox: speech, a recording disclosure, transfers and test calls. The written scope covers all of that, so you know exactly what the line does before you commit.

Problems this solves

Customers who prefer to call cannot reach your text-only agent

The add-on gives your existing chat, messaging or action agent a phone line. Callers ring a number in your telephony account and the agent answers aloud with its usual knowledge.

Phone calls get different answers from your chat channel

The voice agent uses the same knowledge and rules your text agent already follows. Callers and chat users get consistent answers, without you maintaining two separate setups.

Some callers need a person and get stuck with automation

A transfer to a person is included, so callers can reach your team when the agent should not handle the call. It is tested on calls with the parent product.

Scope card SKU UPM-A0004

Voice Channel Add-on

Everything this build includes, written down before you pay. Choose how you want it, own the code or license it yearly, then the delivery speed and any add-ons.

$2,500 one-time build price

What is included

Channel
As per the parent product
Integrations
As described in the add-on
Knowledge
As per the parent product
Workflows
Gives an existing text agent a phone line with voice conversations
Languages
As per the parent product
Testing
Tested together with the parent product
Revisions
1 round
Handoff
Written handover report
Support
14 days after launch

A good fit if

Your chat or WhatsApp agent answers well in text, and customers still phone you with the same questions.
You already keep, or can open, a telephony account such as Twilio, Vonage or Exotel in your own name.
You want one set of approved answers whether a customer types or calls.
A caller who needs a person can be transferred to a number you choose.

Not the right fit if

Your product is already a voice agent. This add-on is only for text agents; voice products already have a phone line.
You want a phone-first build that books appointments and routes calls. The AI Voice Receptionist is designed for that.
Your customers want to send WhatsApp voice notes, not phone you. WhatsApp Voice + Text Agent handles both on WhatsApp.
You only need text messages on a phone number. The SMS Channel Add-on adds two-way SMS instead.

How it works

  1. We connect your telephony account. The agent is attached to a number in your Twilio, Vonage, Exotel or similar account.
  2. A voice is chosen. You pick the voice and greeting, including the disclosure that callers are speaking to AI.
  3. Speech becomes the same conversation. What the caller says is handled by the existing agent, with the same knowledge and rules as text.
  4. Calls reach a person when needed. Callers who ask for someone, or need something outside scope, are transferred to the number you set.
  5. Test calls are run with the parent product, and the results go to you for review and one revision round.
  6. Handoff. Updated documentation, a test report, a handoff note and a short written walkthrough complete the add-on.

What you provide within 72 hours

Your portal lists these the moment you order. Delivery starts the working day after everything is in and your access is checked.

  • The order reference of the text agent getting a phone line
  • A telephony account in your name, with the number to use, forward or port
  • The number calls should transfer to when a person is needed
  • Your preferred voice, greeting and call-recording disclosure wording
  • Telephony and system access, shared securely in the way we agree at intake, never by email
  • One person who signs off the test calls
The 72-hour rule. Send everything on your checklist, including access, within 72 hours of ordering so your build starts on time.

Timeline

Start Telephony account, number and voice agreed
Weeks 1–2 Agent connected to the phone line
Week 2 Greeting, disclosure and transfer set up
Week 2 Test calls with the parent product, recordings shared
Week 2 Your review and one revision round
Go-live Phone line live, walkthrough delivered
Delivery options, in working days (Monday to Friday) from completed intake. They can extend because of national or public holidays, technical issues outside our control (such as platform outages, third-party changes, account approvals or access delays), or natural disasters and other events beyond our control. If a delay happens, we tell you in writing with a new date.
OptionDelivery timePrice
Standard10–20 working days$2,500

What you receive at handover

  • A phone line with spoken conversations added to your existing text agent
  • A number set up in your own telephony account
  • A transfer to a person on your team
  • A test report from calls tested with the parent product
  • Updated documentation, a handoff note and a short written walkthrough
  • 14 days of support

Expected benefits and how to measure them

  • Can let customers who prefer the phone use your agent too.
  • Helps keep answers consistent across phone and text.
Calls answered by the agent
Count calls handled by the voice agent each week from your telephony reports, from launch onwards.
Transfer rate
Track calls transferred to a person against all agent calls, from the agent's logs, each month.
Missed calls
Compare missed calls on that line in your phone system's report for the four weeks before and after launch.

Before you start: Record how many calls you miss each week and how calls are handled today. Note the questions callers ask most.

These are things to track, not promised results. Outcomes depend on your data, your team and your market.

Running costs

Calls add per-minute costs that you pay directly: telephony minutes and number rental to your telephony provider, plus voice and AI model usage in your own accounts. We take no share of call minutes. The add-on itself is a single one-time payment, shown before you buy.

Ask about running costs

Custom requirements

Want several numbers, call queues or a separate phone flow that the text agent does not have? Note it at checkout. A written Change Quote follows, and that work starts only when you accept it. Larger or bespoke projects go through the Custom AI request form instead.

Request a custom version

Keep it running

The phone line falls under the parent product's maintenance, which grows in line with the add-on's price. Greeting changes, transfer numbers and wording fixes use its monthly change hours.

Adds $125/mo to maintenance

Covered by the main product's maintenance, which grows by this amount.

How maintenance works

How this compares

Do it yourself with a SaaS toolHire a custom agencyUpmark Labs
Price A voice bot platform bills monthly plus per minute An agency quotes a voice project after discovery Ours is one fixed price, shown before you buy
Knowledge A separate script to write and maintain Built to the brief Ours reuses the answers your text agent already gives
Phone number Often rented through the platform Depends on the contract Ours runs on a number in your own telephony account
Delivery Self-serve setup Set per project Ours has a fixed delivery time shown before you buy, with faster options

Questions about this product

Can my chat agent really talk on the phone?

Yes. The add-on connects your existing text agent to a phone line, so spoken questions are turned into the same conversation the agent already handles in text, and its replies are spoken back. It uses the knowledge and rules you have already approved rather than a separate phone script.

Which telephony providers can the voice channel use?

It runs on a telephony account in your name, such as Twilio, Vonage or Exotel. You provide the account and the number to use, forward or port. Upmark Labs does not buy telephony accounts for customers, so the number and the call records stay yours.

Why is the voice channel priced higher than other channels?

Because a phone line involves more than a new inbox: speech in and out, a voice and greeting, a recording disclosure, call transfer and test calls. Each of those is built and tested with the parent product. The fixed price for each delivery speed is shown in the price panel before you pay, with nothing added later.

Can I add the voice channel to a voice receptionist?

No. Voice agent products already answer the phone, so this add-on is not offered for them. It exists to give text-based agents, such as chat, messaging and action agents, a phone line. To add a different spoken voice to a voice product, look at its own voice options.

What do callers hear when they need a real person?

They are transferred to the number you chose during intake. If the parent agent already has handoff rules, the phone line follows them. If nobody picks up, the agent takes a message, so the caller is not left in silence.

Do callers hear that they are talking to AI?

Yes. The greeting includes a short disclosure in your own wording, which you approve during intake. Rules on automated calls vary by country and state, so we ask you to confirm the wording that suits where you operate. You can change it later through monthly maintenance.

Let the agent that answers your chats pick up the phone too.

Add the Voice Channel Add-on and your text agent answers calls on your own number, with the same approved answers and a transfer to a person when it matters.

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