NEC ELECTRA ELITE IPK II, System Hardware Manual, Page: 531 / 642

Electra Elite IPK II Document Revision 3
System Hardware Manual 11 - 27
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3.7.3 Switch Settings
The HFU-U Unit uses 2-position switches SW1 and SW2.
Refer to Table 11-5 HFU-U Unit Switch Settings .
3.8 SLTII(1)-U10 ADP (Single Line Telephone)
The Single Line Telephone adapter provides an interface for Single Line
Telephones and other similar devices from an ESI ETU channel.
This adapter can be connected to any ESI port except 01 and 02.
3.8.1 Connecting the SLTII(1)-U10 ADP to the System
1. Connect one end of the RJ-11 to the ESI port on the KSU and
one end to the ESI jack on the SLT Adapter.
Figure 11-33 HFU-U(BK)/(WH) Unit Switches
Table 11-5 HFU-U Unit Switch Settings
SW1 SW2
Description
Position
1
Position
2
Position
1
Position
2
OFF ON OFF ON Full Duplex (Default)
ON OFF OFF ON Half Duplex (6db mix ratio)
OFF ON ON OFF Half Duplex (12db mix ratio)
ON OFF ON OFF Half Duplex (18db mix ratio)
Full Duplex: In some large areas or noisy locations half duplex
should be used. The echo canceling ability of the HFU-U is
limited.
Half Duplex: When voice clipping occurs, use a lower decibel
setting.