2.1 System Configuration—Hardware

2.1.1 Extension Jack Configuration

Description

Extension jacks are used to connect proprietary telephones (PTs), single line telephones (SLTs), Direct Station Selection (DSS) Consoles, and Voice Processing Systems (VPSs) to the PBX.

Conditions

• PT and SLT in Parallel Mode
A PT and an SLT can be connected to an extension jack and used in parallel mode.
• DSS Console and Paired Telephone Assignment
When a DSS Console is connected, a PT must be paired with the DSS Console through system programming (rarrow.gif DSS Console Jack Assignment [003], Console Paired Telephone [004]). Each extension jack number should be unique.
• Automatic Detection
A PT and an SLT can be connected to an extension jack with no programming required.