Routing elements162 System functions and features as of R3.0syd-0367/1.3 – R3.0 – 03.20135. 11. 1 Using Terminals as Key TelephonesThe following system phones can be configured as key telephones:• Office 35• Office 45/45pro• Aastra 5370/5370ip• Aastra 5380/5380ipA system phone automatically becomes a key telephone as soon as a KT line isplaced on one of the phone's line keys.Key FunctionsAfter a featurephone is converted to a key telephone, it gets one or more line keysand a personal key. The other keys remain freely configurable in the same way ason a featurephone.The locations of the line keys and personal key can be configured independently ofeach other. It can be this, a configurable keypad on the phone or an expansion key-pad.The personal key allows the key telephone to be addressed and used in the sameway as an ordinary internal user, in accordance with the settings in the user config-uration.The maximum number of line keys possible depends on the type of system phone.The key telephone can be set in such a way that an incoming or outgoing call on aline key is either automatically allocated a KT line or automatically answered, as thecase may be. Depending on the type of phone the line keys can be provided withup to 9 priority levels (see the system phone’s User's guide).SignallingA call on a KT line is signalled both acoustically and visually. The status of the KTlines is indicated by LED signalling. The status of the KT lines is indicated by LEDsignalling.Tab. 38 LED signalling on the line keys of a key telephoneLED signalling MeaningLED flashing rapidly Call on that lineLED lit Line is seizedLED flashing slowly Line is parked
