Siemens 600 Series, 300 Series manual Glossary G-5

status light. A light-emitting diode (LED) located next to every feature key and line key on ROLMphone telephones, which indicates the state of that feature or line. For example, the status light flashes next to the line key that is on hold.

system feature. A feature of the CBX system that is available to all users.

T

trunk. A telephone line between a PBX and a local Central Office (CO). Trunks are used when calling local or long distance numbers outside of your company’s telephone system.

Glossary G–5