| • | 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 (  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. |