message waiting

message waiting signal

night service

off-hook

on-hook

outside call

outside line

feature that allows you to turn message lights on and off at telephones in the system. (See also personal message

waiting.)

feature that allows two people in the system to turn a light on or off at each other’s telephone, notifying them of a message.

feature that allows you to send incoming calls either to a bell or to preassigned telephones when you leave for the night.

either the handset has been removed from its cradle or the speaker/speakerphone is turned on.

the handset is in its cradle and the speaker/speakerphone is turned off.

call between a System 25 telephone and a telephone not connected to the System 25. Outside calls are made over Central Office or other lines and are signalled by two short rings.

a line to the Central Office or other system. Outside lines may be accessed by pressing special buttons or by dialing an access code.

PDC

(Personal Dial Code) extension number that

 

is assigned to an individual and is usually

 

associated with the telephone at the

 

individual’s desk.

paging feature

park

personal message waiting

pickup

allows you to access paging equipment from System 25 telephones.

feature similar to hold, except that it allows you to answer a call from any phone in the system.

feature that allows you to turn on and off a light at another person’s telephone to notify them of a message.

feature that allows you to answer a call that is ringing at another telephone.

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AT&T System 25 manual Pdc