System Telephones
21
E 821 ST System telephone
It has adicional keys for the following features:TOGGLE, PICK
UP and CONFERENCE.
* Only available in Brazil.
1. H a n d s e t ;
2. Features keys;
3. Free Programming keys with LEDs for status indication;
Status indication keys
Key off; the extension or the external line is free.
Key on; the extension or the external line is busy
Key binking slow; a call is parked
Key blinking medium; an incoming call for the exten-
sion was not answered.
Key blinking fast; an incoming call or a recall is being
signalled.
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