Ericsson LBI-39101A manual Recorder Outputs if used, Paging Input if used

LBI-39101 INTERCONNECTING THE EQUIPMENT

assembled with one amplified speaker in the far left-hand position (select speaker), one amplified speaker in the far right-hand position (unselect speaker) and blank panels installed in the two center positions. Four-speaker consoles are generally equipped with two separate 2-speaker rack mountG￿assemblies.

Install or mount each Speaker Assembly in a suitable location and then interconnect it to the

Enhanced Audio Enclosure using cable P29/5010150000 (350A1371P29). This cable is 9 feet (2.74 meters) in length. It is identical to the cable that interconnects the PC's serial COM port to the Enhanced Audio Enclosure. Mate the cable's female DB-9 connector to the appropriate male DB-9 connector on the Enhanced Audio Enclosure's rear panel. These male connectors are labeled "SEL SPKR" (select speaker), "UNSEL SPKR1" (first unselect speaker), "UNSEL SPKR2" (second unselect speaker) and "UNSEL SPKR3" (third unselect speaker). Connect the other end of the cable to the female DB-9 connector at the respective Speaker Assembly. If necessary, see Tables 18 and 19 for DB-9 pin-outs.

NOTE

Load resistors are not required for unused Enhanced Audio Enclosure speaker outputs.

Recorder Outputs (if used)

To provide call-check recorder support, select and unselect audio outputs are available from the Enhanced Audio Enclosure. The unselect output may, however, be reconfigured via software to output Call Director audio. These unbalanced 600-ohm outputs appear at the removable screw-terminal type terminal block labeled "RECORDER" on theG￿Enhanced Audio Enclosure's rear panel.

Interconnect the outputs to call-check recorders as required. These outputs are not isolated from ground through isolation transformers and the two ground terminals are common. See Figure 7 and Table 27 for terminal identification. See the specifications in LBI-39100 for audio signal output level specifications. If required, audio output levels may be adjusted via a C3 Maestro note card.

	WIRE SECURING SCREWS	RECORDER
	LOCATED ON TOP
WIRE ATTACHMENT:
1.	UNPLUG TERMINAL BLOCK FROM
	MATING CONNECTOR.	1	4
2.	IF REQUIRED, COMPLETELY
	LOOSEN WIRE SECURING SCREW.
3.	INSERT WIRE.
4.	TIGHTEN WIRE SECURING SCREW.
5.	REPEAT FOR OTHER WIRES.
6.	RECONNECT TERMINAL BLOCK TO
	"RECORDER" MATING CONNECTOR.

UNSELECT/

TELEPHONE OUT

GROUND

SELECT OUT

GROUND

Figure 7 – Recorder Outputs At

Enhanced Audio Enclosure

Paging Input (if used)

Paging connections are located on a second removable screw-terminal terminal block on Enhanced Audio Enclosure's rear panel. A 600-ohm balanced line audio input and a PTT (page enable) input are included. As shown in Figure 8, this terminal block is labeled "PAGING".

Pager balanced audio on terminals 1 and 2 is switched in when the PTT line at terminal 3 becomes active by grounding it to terminal 4. Typically, the PTT action is accomplished by a relay in the pager. During a page, no other audio signals are applied to the Line 1 output. Also, the paging signal is sent to the headsets and speakers approximatelyG￿16 dB lower than other audio signal levels.

Connect the pager to the terminal block in accordance with the manufacturer's instructions, Figure 8 and Table 26. The audio terminals are isolated from ground. See the specifications page in LBI-39100 for audio signal input level specifications. If required, audio input level adjustment may be accomplished via a C3 Maestro note card.

	WIRE SECURING SCREWS		PAGING
	LOCATED ON TOP
WIRE ATTACHMENT:
1.	UNPLUG TERMINAL BLOCK FROM
	MATING CONNECTOR.	1	4
2.	IF REQUIRED, COMPLETELY
	LOOSEN WIRE SECURING SCREW.
3.	INSERT WIRE.
4.	TIGHTEN WIRE SECURING SCREW.
5.	REPEAT FOR OTHER WIRES.
6.	RECONNECT TERMINAL BLOCK TO
	"PAGING" MATING CONNECTOR.

PAGER AUDIO

INPUT +

PAGER AUDIO

INPUT -

PAGER PTT INPUT

GROUND

Figure 8 – Pager Inputs At Enhanced Audio Enclosure

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