Lucent Technologies DEFINITY Installation For Adjuncts And Peripherals page 42

DEFINITY ECS Release 8.2
Installation for Adjuncts and Peripherals 555-233-116
3 Voice and Data Terminals and Extenders
2-Wire DCP Endpoint
Table 9. Pin-out for 2-wire Voice Terminals
Pin Number Function
1 4-wire output from terminal
2 4-wire output from terminal
3 4-wire input from system
4 2-wire tip
2-Wire Voice and Data Terminals
Table 10 provides the pin-out configuration for 2-wire voice and data terminals.
Table 10. Pin-out for 2-wire Voice Terminals
Pin Number Function
1 4-wire output from terminal
2 4-wire output from terminal
3 4-wire input from system
4 2-wire tip
Figure 7 shows a workstation connecting to a data adapter. The line side of the
adapter connects to the TN2181 digital line 2-wire circuit pack via the main
distribution frame (MDF) (to the system cabinet).
Pin Number Function
5 2-wire ring
7 4-wire input from system
7 Auxiliary power -48 VDC
8 Auxiliary power GRD
Pin Number Function
5 2-wire ring
7 4-wire input from system
7 Auxiliary power -48 VDC
8 Auxiliary power GRD
Issue 1
April 2000
20