United World Telecom Callback Service

Koala Calling is delighted to offer the United World Telecom callback service. International callback is an industry born on the fact that calls placed from the USA are far less expensive than calls placed from most other countries. Callback is a computerized system that re-routes or "re-originates" calls so that they are cost-rated and billed as if the calls were originating from the USA, which has lower international rates than most other countries. No set-up fee. No monthly fee or minimum charge. Calls billed in 6 second increments after the first 30 seconds. No term commitment. No need to change your primary long distance provider.


How Does it Work?
  1. When you set up an account with Koala Calling for the United World Telecom callback service, we will assign an access number to you which will correspond to the phone number from which you wish to place your calls.
  2. Dial the access number assigned to you. After one ring, disconnect the line by hanging up the phone. Our system will call you back at the corresponding phone number.
  3. When the system calls you back, answer the phone. You will then be prompted to enter a destination number followed by the pound key (after the message you will hear a long dial tone). NOTE: It is imperative that you use a touchtone phone (as opposed to a pulse, or rotary, phone) to use this service.
  4. Once a destination number has been dialed, you will be connected through the United World Telecom callback system located in Delray Beach, Florida.
  5. To disconnect the line, simply hang up the phone or press the star key three times (below the 7 on your touch tone phone).

Customers who use United World Telecom can keep their existing phone and long distance arrangements in place. Customers can still place calls over the local phone system (PTT) if they so desire. Callback accounts are secured through a major credit card. Payments must be made in US Dollars. Customers can view monthly invoices on-line, showing complete call detail, including the destination number, date/time of the call, duration, and cost of the call.

Charges and Payment:

The installation (set-up) is free and there are no service charges. There is NO monthly maintenance fee. To determine the flat, per minute rates, refer to our rate calculator. Due to the increasing costs of terminating calls over mobile networks, some countries have separate rate listings for mobile phones.

IMPORTANT NOTE: Prior to December 2002, UWT customers were not charged for any incomplete calls. A charged call is a call that appears on a UWT invoice. UWT is now charging the customer for such incomplete calls IF the length of the call attempt exceeds the system allowed grace period - which is 90 seconds. When a callback is received, a call should be placed within 90 seconds of the reception of the callback. If the destination number is not answered, then the customer should either press the star key at least 3 times (***) in rapid succession to disconnect the callback OR press the pound key # at least three times in rapid succession (###) to get a new line to dial again.

The vast majority of our customers make payment via credit card. We can, however, make provision for customers who wish to make pre-payment via Western Union or bankwire. For more detailed information on making pre-payment, just contact us by E-mail at koala@koalacalling.com.

United World Telecom accepts American Express, MasterCard, VISA, and JCB. We will contact your credit card provider to determine that you have available credit in the amount of the monthly credit limit that you designate for your call back numbers. We will also contact the issuer of your credit card to verify the address that you have listed on the application form.

NOTE: If United World Telecom is unable to verify your billing address as listed on the application, you will be required to fax or send us a photocopy of your credit card (front and back) so that we can verify that you are the rightful owner of that credit card. In this situation, you may also be asked to fax us a photocopy of your most recent credit card invoice that displays your billing address on the invoice. This step is required to prevent fraudulent usage by others. Your credit card or bankcard will be debited at the end of each month for long distance charges accumulated during that month. For those who are frequent users of the service, your credit card or bank may be debited each time your bill reaches a usage amount of $200.00 USD. In this case, at the end of each month, you will be charged any remaining balance equal to the monthly invoice, which will be mailed to you.

Each month you will receive a fully detailed statement that itemizes your call detail ’ as well as the amounts debited from your credit card or bankcard. All customers receive this invoice via E-mail as well as U.S. mail. Customers whose invoice is less than US $20 in any given month will not receive a paper invoice by mail.

It is imperative that funds are available with your credit card provider so that United World Telecom can collect for payment due. If United World Telecom attempts to collect payment and is unsuccessful, your account will be disabled. You must also make sure to contact us when you are issued a new credit card expiration date.

Why United World Telecom?
  • No charge for busy or engaged calls.
  • Calls billed in 6 second increments after the first 30 seconds (with the exception that calls from Mexico are rounded off to the next nearest minute).
  • No taxes or surcharges to quoted prices. Some competitors add a 3% tax surcharge (or higher) to their quoted prices.
  • No per line/access number monthly fee. Beware of low advertised prices with high monthly fees.
  • No minimum monthly usage requirements, sign-up fees, or clearing charges.
  • Ability to retrieve your call detail online.
  • Ability to trigger or initiate your call back via the internet if you live in a country where the PTT blocks the usage of call back services.
  • Superior customer service delivered by friendly and concerned professionals


How to apply:
To apply, you make also use our secure, online sign-up. If your browser experiences any problems with this encrypted page, or should you still feel insecure about sending information online, please click here to download the application in PDF format. You can fax the form to us at +1-727-867-1489, +1-813-354-3336, or 1-800-467-6073.

It generally takes one business day to set up a new account. Confirmation will be sent via the E-mail address listed on the application or by fax.




• Free Demonstration Account

• Rates Calculator

• Application

• Secure Online Signup

Koala Calling  •  4905 34th Street South, PMB 171  •  St. Petersburg, FL 33711
Phone: (727) 867-4588  •  Toll Free Phone: 1-800-218-5896
Fax: (727) 867-1489  •  Toll Free Fax: 1-800-467-6073
koala@koalacalling.com