Lucent Technologies DEFINITY Installation For Adjuncts And Peripherals page 184

DEFINITY ECS Release 8.2
Installation for Adjuncts and Peripherals 555-233-116
16 Loudspeaker Paging, Music-on-Hold, and External Alerting Equipment
Loudspeaker Paging
The figure also shows connections from the music source to the loudspeaker
system through a paging amplifier as well as through a 909A/B coupler. A wiring
block must be locally engineered.
NOTE:
If the loudspeaker paging system provides a talk-back microphone at the
speakers, the microphone must be FCC approved (or equivalent) or a
909A/B universal coupler is required.
Refer to the tables at the end of this chapter for pinouts of the auxiliary trunk
circuit pack.
1. 25-pair cable to TN763B/C/D auxiliary
trunk circuit pack (SZ1 connects to
GRD on key 10)
2. Loudspeaker system
3. 909A/B universal coupler (if required)
4. Part of main distribution frame
5. Paging amplifier
Figure 50. Connections for Loudspeaker Paging
Loudspeaker Paging Access (Without Universal
Coupler)
1. Determine port assignment of paging zone(s) from loudspeaker paging
form.
2. At the main distribution frame, locate the connecting block and terminals
assigned to the selected port.
3. On the locally engineered wiring block, place a strap between terminals S
and SZ. Place a strap between terminals S1 and SZ1.
4. Install patch cord/jumper wires at the main distribution frame.
J2
4
5
1
2
6. Music source for background music over
loudspeakers
7. 103A or modular wall jack
8. To SZ1 on TN763B/C/D connector
9. Tip and ring wires
10. -48 VDC power supply for 909B
Issue 1
April 2000
J1
4
5
1
7
6
3
2
J3
5
2
0031_0 RBP 062696
162