att door phone controller 사용자 설명서

This section provides installation and operation information for

applications such as residences or small businesses which do

not  have a telephone system.

When your AT&T Door Phone Controller is installed with

standard telephone equipment (no PBX), the unit may operate

in Shared Line Mode which permits a single telephone set to

be shared between the AT&T Door Phone Controller and an

outside line (to a Central Office). Thus, the standard telephone

equipment can be used for normal call operations as well as

servicing the door.

To customize the AT&T Door Phone Controller to your specific

installation and option requirements, you must properly set the

8 position DIP switch located on the AT&T Door Phone
Controller front panel (see Figure 1-1).

Do not connect to the modular jacks on

the AT&T Door Phone Controller until after the DIP

switches have been properly set.

When using the Door Phone Controller with a small business or

residential telephone equipment (no PBX installed), the DIP

3-2   Installation — Home/Residential