KX-TD & KX-T Series

KX-TD Series - Discontinued Systems (still supported and expansion components and systems are generally available).
Panasonic KX-TD Series (Digital) Telephone Systems were the most robust and feature rich systems in their class. The KX-TD Series was Panasonic's flagship line. Among the dozens of features that make these telephone systems unique, perhaps the most noteworthy is the capability of remotely programming and maintaining these systems from anywhere in the world. The KX-TD Series systems come in a complete range of sizes.

KX-T Series - Discontinued Systems (still supported with a very limited amount of spare parts available)
Panasonic KX-T Telephone Systems were the first Panasonic KX phones systems ever produced. Many of these systems continue to process calls very faithfully. However, the technology available nearly 30 years ago was so different that, much like the little Mars Rover, we never expected them to survive this long.

These older systems are going to fail one day and here's why: In the '70's and '80's, tiny electrolytic capacitors were used to buffer electrical energy like shock absorbers do on cars. As part of the manufacturing process for any electrolytic capacitor, a light film of oil was applied to the inside to help them conduct electricity. After 20 or 30 years of use, we are seeing that these capacitors are starting to dry up, which in turn, causes the component or components to fail. When that happens, it's time to upgrade. Better yet - replace it BEFORE it fails.