Frequently Asked Questions

You've got questions. We've got answers. And if you don't find what you're looking for, we're here and happy to help.



What can I make using Zang?

Zang offers developers an easy-to-use platform with a comprehensive set of telecommunication functionality which can be seamlessly incorporated into any type of application. Zang gives developers and innovators the freedom to build any voice and/or SMS enabled applications they can think of!

Which languages does Zang support?

Zang supports any language that can receive HTTP requests and respond with XML! Drop us a line if you have a suggestion at [email protected]. Thanks!

What can't I build with Zang?

Emergency services, unsolicited marketing (SPAM!), and applications that serve to assist or perform activities deemed illegal are not allowed. For full details on acceptable uses of Zang, please check our Acceptable Use Policy.

Phone Numbers

Phone Numbers

Can I get a local number in my area code?

Avaya OneCloud CPaaS provides phone numbers in nearly every area code in the US and Canada, although there are a handful of regions where we don’t have numbers available, including Alaska and Hawaii.

Can I pick any phone numbers I want?

As long as it hasn’t already been taken, yes! Use our API or our API Explorer in your account Dashboard, to search our current inventory for specific phone numbers.

Can I get a toll-free number?

Yes! To purchase a toll-free number, go to the Buy Numbers and select Toll-Free.

Can I port an existing phone phone number to Zang?

We’re working to add the ability to port your existing numbers to Zang in the near future.

Billing And Pricing

Billing And Pricing

How am I charged while using Zang?

Zang has a very easy pricing system that shows you exactly what you're paying for, whether it be for per-minute phone calls, per-inbound/outbound SMS or monthly rates associated with purchased phone numbers. If you have any questions regarding pricing, please let us know at [email protected].

What can I do with Zang's free trial?

Upon signing up for Zang, you will be awarded a complimentary $2.00 credit. This will help you get started familiarizing yourself with the platform and building/testing your initial application. The free credits can be applied to all of Zang’s features except international calling.

How can I upgrade from a trial account?

When you’re logged in, simply click the Select Production Access button on your Account page. and add funds to your account. Once you have been approved, you will have a full unrestricted account.

How does Zang's billing work?

While using Zang services (voice minutes, SMS, name and address lookups, etc.) we deduct from your pre-paid account balance. When your account balance hits $0.00, your account will be temporarily suspended until additional funds are added. We notify you by email when your balance gets down to $10.00, so you can plan accordingly.

What happens if my Zang account balance reaches zero?

If your balance reaches $0.00 you will no longer be able to use any of Zang’s features or the phone numbers that you have purchased. However, you will NOT lose any phone numbers you've purchased right away. You'll want to head to our billing page and add funds to your account to reactivate your numbers and your Zang service.

In the case that you have not replenished your Zang account after 90 days, we may close your account and return your phone numbers to our database of available numbers. This means it is important to proactively take care of your account’s billing and avoid any disruption to your applications.

What if I want to cancel my account?

If you want to cancel your account simply stop funding it. Once your balance reaches zero we’ll automatically shut off your account.

Other Questions?

If you still have any other questions remaining, please email us at [email protected] and we’ll be sure to help you answer them!