NEC Electra Elite 192, Hardware Manual

Page: 182 / 369

Issue 6 Electra Elite
5 - 36 Installing Electronic Telephone Units
When its channels are assigned to ANI, the DTI-U10
supports Feature Group D incoming only signaling. The
DTI-U20 supports Feature Group D incoming MF/
outgoing DTMF signaling.
4.6.2 Installation
When a DTI-U10/20 ETU is installed, a CLKG-U10 Unit
must be installed on the CPUB( )-U10 ETU.
The DTI-U10/20 ETU (3 maximum) can be installed in slot
S1 or S4 of the B64-U10 KSU or Slot S1 of the first
expansion KSU in the system.
4.6.3 Switch Settings
Refer to Table 5-6 DTI-U10/20 ETU Default Switch
Settings .
Table 5-6 DTI-U10/20 ETU Default Switch Settings
Switch Setting Description
SW1–1 On: Indicates alarm or
loopback status of the
channel
Off: Indicates channel is busy
or idle
Default: Off
Used to assign LED
Indications
SW1–2 On: Loopback on
Off: Loopback off
Default: Off
Switches Loopback on
and off
SW1–3 On: DTE Loopback enabled
(Software Loopback
within the DTI ETU)
Off: Line Loopback enabled
(Loopback to CO)
Default: Off
Sets Loopback
When SW1-2 is On, this
switch is active.
SW1–4 On: Test Mode
Off: Normal Operation Mode
Default: Off
Switches between normal
operation mode and test
mode
SW1–5 N/A N/A
SW1–6 N/A N/A
SW2 N/A Resets the DTI ETU