Telephony

The Telephony section is where you, as a White Label admin, get phone numbers for the agents running on your platform. You buy them once into your own inventory, and from there you assign each number to the subaccount of the client that needs it. Everything in this section is organized into three tabs:

• Inventory — the numbers you already own.
• Marketplace — the catalog where you buy new numbers.
• Billing — the rules that apply to call billing.

Across the three tabs you’ll see four summary cards at the top. They give you a quick read of what this section is for:

• Global number coverage — you can browse phone numbers from many countries from a single place. Useful when your clients operate in different regions.
• Buy inside the platform — numbers are purchased directly through Callin’s managed Telnyx infrastructure. You don’t need a Telnyx account of your own.
• Assign to subaccounts — once a number is in your inventory, you can link it to the subaccount of any client in your environment.
• First-minute rounding — outbound call billing is enforced with a one-minute minimum. The Billing tab explains it in detail.

You’ll find it in the White Label Platform, under App Configuration (open it here).

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Inventory

The Inventory tab is your personal warehouse of phone numbers. Every number you’ve already bought lives here, ready to be assigned to a client’s subaccount. The first time you open Telephony, your inventory will be empty. That’s normal — you’ll see a No numbers found message until you make your first purchase.

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Counters

Two counters sit at the top of the tab and give you the state of your inventory at a glance:

• Total inventory — the total number of phone numbers you own.
• Assigned numbers — how many of those are already linked to a client’s subaccount.

The difference between the two tells you how many numbers are still free and ready to assign.

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Filters and actions

The filter bar lets you find a specific number when your inventory grows:

• Search by number or label — find a number by digits or by the label you gave it.
• All countries — narrow the list to a single country.
• All types — narrow the list to a single number type: Local, Mobile, Toll free or National (explained in the next tab).
• Refresh — reloads the list. Useful right after a purchase if the new number hasn’t appeared yet.
• Buy number — a shortcut that takes you to the Marketplace tab.

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Assigning a number to a subaccount

Once a number is in your inventory, you can assign it to any subaccount in your environment. The number stays in your inventory; the assignment is what authorizes the client to use it inside their agents. Every time you assign a number, the Assigned numbers counter goes up by one, so you can always see how much of your inventory is in use.

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Marketplace

The Marketplace tab is the catalog of numbers available for purchase. This is where you go whenever a client needs a new number you don’t yet have in your inventory.

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What each card shows

Every number is shown as an independent card with all the information you need to decide:

• The number itself, in international format.
• Country flag and the city or region (for example, TX, BELLVILLE).
• Carrier — the underlying provider that supplies the number (for example, Telnyx).
• Number type — Local, Mobile, Toll free or National. Explained below.
• Capabilities — VOICE and/or SMS, depending on what the number supports.
• Monthly cost — the recurring fee charged every month while the number is active.
• Setup cost — a one-time charge for activating the number.
• Purchase — the button to buy it.

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Number types

When you buy a phone number, you’re not just choosing digits — you’re choosing how callers perceive it and what it can do. You can filter the catalog by type:

• Local — a number tied to a specific city or region (for example, US numbers attached to a state). Callers see a familiar area code, which helps with answer rates for local businesses.
• Mobile — a number that lives on mobile networks. In some countries, mobile and local numbers behave differently, especially for SMS.
• Toll free — a number where the caller pays nothing; the cost falls on the line owner. Typical for national customer support lines.
• National — a number that isn’t tied to a city and is recognized across the whole country. Useful for businesses that serve customers nationwide without offering a free line.

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Searching and filtering

The Marketplace has the same filter bar as Inventory:

• Search by number or label — find specific digits.
• All countries — browse by country. Type in the search box to find a country quickly.
• All types — narrow to a single type.
• Refresh — reloads the catalog. If you see Failed to fetch, click Refresh to try again.

The catalog covers these countries: Australia, Austria, Belgium, Bulgaria, Canada, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, India, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Mexico, the Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, South Africa, Spain, Sweden, Switzerland, the United Arab Emirates, the United Kingdom and the United States. Available types and prices vary by country.

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What happens after a purchase

Once you click Purchase on a card and confirm:

• The number is activated under your account.
• It appears immediately in your Inventory tab.
• The monthly cost starts counting from the activation date.
• You can assign the number to any client subaccount whenever you’re ready.

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Billing

The Billing tab explains the rules that apply to every call made through the platform. There’s nothing to configure here — the page is informational, but worth reading once so nothing on your invoice catches you by surprise.

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First-minute rounding

Whenever an outbound call uses Callin’s carrier and the numbers you bought through the platform, a call under 60 seconds is billed as a full minute, even if it lasts only a few seconds. Calls of 60 seconds or more are billed for their actual duration. Inbound calls, browser test calls, imported numbers, and external SIP trunks are always billed for their actual duration. In practical terms:

• It applies to the platform-side billing between you (the White Label admin) and Callin.
• It applies to the resale billing you set up for your own end clients.
• The rule is enforced automatically when call duration is calculated — you don’t need to configure anything.

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Managed provisioning

This section confirms that you, as a White Label admin, don’t need to set up Telnyx by yourself. Everything is handled by Callin’s backend:

• Numbers are provisioned through Callin’s managed infrastructure.
• Purchases happen directly inside the platform.
• Purchased numbers can be assigned manually to any existing subaccount at any time.
• Call handling and billing rules stay consistent across your whole environment.

In short: you focus on selling phone numbers and capacity to your clients; the carrier-side complexity is invisible.