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Because area codes, telephone numbers, and dialiing patterns are constantly changed and updated in North America and throughout the world, TEL recommends that you update your system annually.

With annual upgrades you can be confident that your call accounting system is accurately billing calls, accounting for new area codes and prefixes, and includes all of the lastest features and functionality of new models and releases.

Reasons to Upgrade:


  • New Area Codes. If an area code is added to your state, your system will print “out-of-state” toll calls for these in-state calls. With an out-of-date system, properties will be forced to write off inaccurate calls and lose revenue as well as pay for the actual cost of calls.
  • New Prefixes. Thousands of new local, extended, or long distance prefixes are added to the United States every month. Additionally, international codes and prefixes are changing all of the time. Without updating your system, your property will not accurately account for these changes.
  • Property Name Change. The call accounting system prints the property name in certain call activity reports. In the event that a property changes its name, the property must upgrade their system to account for the new name.
  • New Phone System. Because call accounting systems are designed to interface with the phone system that they are setup with, when a property changes their phone system they may also need to upgrade their call accounting system.
  • New Property Management System. Call accounting systems are programmed for PMS or non-PMS environments. If a new PMS is added or replaced, the system should be upgraded to ensure accurate postings to the new PMS.
  • New Dialing Patterns. With the addition of 10-digit dialing, extended calling areas, 7-digit toll call dialing, and numerous other special area dial patterns, upgrading your call accounting system is essential for accurate billing and added revenue.
  • Additional Features and Functionality. As the call accounting systems are updated and changed, new features and functions become available to help track and report calls more efficiently.
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With annual upgrades, you can be confident that your call accounting system will accurately bill calls, account for new area codes and prefixes, and include all of the latest features and functionality of new models and releases.


“We have worked with the TEL electronics’ INN-FORM systems for many years and continue to be impressed by its dependability and capability in the hospitality market. Your product is and has always been easy to maintain, durable, and affordable. In an era of declining revenues, hotels can’t afford to be constantly attending and spending money on maintaining equipment, but with TEL we continue to find the value of a low-maintenance workhorse call accounting system. TEL has developed and maintained a reputation for a fantastic product, great value, and outstanding reliability.

We appreciate your lasting commitment to the hospitality market and look forward to continuing to work with TEL electronics. Thank you for your support.”

Trevor Warner
Warner Consulting Group
Columbus, Ohio

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