Panasonic KX-TDA50 Installation Manual page 30

1.4 Specifications
The total MEC figure is 32. As this exceeds 28, you need to install an MEC card for this
configuration.
AC Adaptor Selection
You must connect an additional AC adaptor in any of the following conditions:
• A total of more than 4 APTs, DPTs (except KX-T7600 series), and DSS consoles (except
KX-T7600 series) are connected.
• More than 4 CSs are connected.
• An MEC card is required to support the configuration.
Note
For how to connect an AC adaptor or additional AC adaptor, refer to "2.11.1 Starting the
Hybrid IP-PBX".
30 Installation Manual