1.2 Basic System Construction

1.2.1 Main Unit

The KX-TES824 has a basic capacity of 3 outside (CO) lines and 8 extensions, and the KX-TEM824 has a basic capacity of 6 outside (CO) lines and 16 extensions. It is capable of supporting Panasonic proprietary telephones (PTs), and single line devices such as single line telephones (SLTs), fax machines and data terminals.
To expand its capabilities, the PBX can be equipped with optional components or user-supplied peripherals, such as door openers, external speakers, and an external audio source such as a radio or CD player.
 
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1.2.2 System Connection Diagram

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Connect a display-equipped proprietary telephone (PT) to extension jack 01, as this extension is automatically designated as the manager extension.
PTs and single line telephones (SLTs) can be connected in parallel. (→ 2.5.2 Connecting Extensions in Parallel)