Configuring a Panasonic KX-TDE200

We had a recent issue that arose when configuring a TDE200 Phone System.
Panasonic KX-TDE200 has 11 slots for expansion; however, you must be aware of the maximum amount of extension cards and line cards that you can add to the cabinet.

Our customer was trying to use 2 slots for line cards, and 9 slots for extension cards.

When the last extension card was added to the system, we received an error message:  Error 90 Over Card Limitation.

Initially we believed that it could be an issue with the power supply; however, we were well below the maximum amount on the Large Power Supply (KX-TDA0103).
When we looked into it further, the maximum amount of extension cards that you can use on a Panasonic KX-TDE200 Telephone system is 8.  You can use any combination of 8 cards, whether it be single line extensions or digital extensions.  And you can only use a maximum of 8 of any of any one type of card as well.

If this error message comes up, you should look into your card count to fix the issue.

One other thing to keep in mind, if you have this error message on a KX-TDE200 phone system, you may not have an easy upgrade to a Panasonic KX-TDE600 phone system.

The TDE600 and TDE200 do not use all of the same cards.  For example, there is a special card for POTS lines (KX-TDA6180), and for single line extension cards (KX-TDE6174, KX-TDA6175, KX-TDA6178).  If you are using the cards that work on the TDE200 System, these cards will not work on TDE600 phone system.   You must upgrade to the TDE600 cards.  Also, the TDE600 has a 10 slot main cabinet, versus the TDE200 has an 11 slot cabinet.  The TDE600 expansion cabinet KX-TDE620 has 11 slots, but also requires an expansion card KX-TDE6110.

So if you are close to the maximum configuration on a Panasonic TDE 200, it is best to propose a TDE600 instead.