NEC Electra Elite 192, Hardware Manual

Page: 61 / 369

Electra Elite Issue 6
System Hardware Manual 1 - 9
DTI-U10/20 ETU
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.
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.
The maximum combination of DTI-U10/20 and
PRT(1)-U10/20 ETUs is 3 per system.
A CLKG-U10 Unit must be installed.
2 ETUs
48
lines
3 ETUs
64
lines
3 ETUs
64
lines
IPT(4)-U10 ETU
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, DID(4)-U10, COI(4)/(8)-U10, or
COID(4)/(8)-U10. Refer to the applicable ETU
assignment for the trunk capacity.
This ETU can be installed in KSU slots that support
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. This ETU shares the total number of
station ports in the system
4 ETUs
Variable
IP Gateway
Trunks
16 lines
4 ETUs
Variable
IP Gateway
Trunks
32 lines
4 ETUs
Variable
IP Gateway
Trunks
48 lines
Equipment Name Description Basic KSU
Basic + 1
Expansion
KSU
Basic + 2
Expansion
KSUs