NEC Electra Elite 192 Hardware Manual page 61

Electra Elite
Equipment Name
The Digital Trunk Interface ETU provides for the
termination of Fractional T1 (24 DS-0 channels)
line. This ETU contains circuitry for outside ring
detection, holding, dialing, control function, Tie line
(E&M), and DID signaling.
Automatic Number Indication (ANI) is supported.
A combination of Loop Start and Ground Start
trunks, DID trunks, or Tie lines can be used on the
ETU. Each trunk is assigned in groups of four.
DTMF or Dial Pulse dialing is supported.
DTI-U10/20 ETU
This ETU is installed in slots S1 and S4 in the basic
B64-U10 KSU or slot S1 of the first expansion
B64-U10 KSU.
The maximum number depends on other trunk
cards installed. This ETU shares the total number
of CO/PBX lines in the system.

A CLKG-U10 Unit must be installed.
This IP Gateway ETU is an optional Interface that
can combine trunk calls into Gateway trunks.
This ETU can emulate the following ETUs:
TLI(2)-U10,
COID(4)/(8)-U10.
assignment for the trunk capacity.
This ETU can be installed in KSU slots that support
IPT(4)-U10 ETU
the applicable assigned ETU.
The maximum number depends on other trunk
cards installed. This ETU shares the total number
of CO/PBX lines in the system.
When this ETU is installed, the FCE-U10 Unit is
required.
station ports in the system
System Hardware Manual
Description
The maximum combination of DTI-U10/20 and
PRT(1)-U10/20 ETUs is 3 per system.
DID(4)-U10, COI(4)/(8)-U10,
Refer to the applicable ETU
This ETU shares the total number of
Basic + 1
Basic KSU Expansion
KSU
2 ETUs 3 ETUs
48 64
lines lines
or
4 ETUs 4 ETUs
Variable Variable
IP Gateway IP Gateway
Trunks Trunks
16 lines 32 lines
Issue 6
Basic + 2
Expansion
KSUs
3 ETUs
64
lines
4 ETUs
Variable
IP Gateway
Trunks
48 lines
1 - 9