Panasonic HYBRID IP-PBX KX-TDA50 - Manual (Page 30)

1.4 Specifications
30 Installation Manual
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 a configuration with a total MEC figure exceeding 28.
Note
For how to connect an AC adaptor or additional AC adaptor, refer to "2.11.1 Starting the Hybrid IP-
PBX".