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May 2001
System Hardware Manual
1 - 7
A6-32
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COI(8)-U13
ETU
COI(8)-U19
ETU
This unit supports eight outside (CO/PBX)
lines and provides circuitry for ring
detection, holding, and dialling. Electrical
fuses (posistors) are built into this ETU.
Only loop start, DTMF Trunks are
supported.
The maximum quantity allowed depends
on the number of BRT(4)-U13 ETU,
PRT(1)-U13 ETU, COID( )-U13 ETU,
DID(4)-U13 ETU and/or TLI(2)-U13 ETU
installed. These units share the total
number of trunk lines.
7 ETUs
56
CO/PBX
lines
8 ETUs
64
CO/PBX
lines
8 ETUs
64
CO/PBX
lines
2 ETUs
16
CO/PBX
lines
COI(4)-U13
ETU
COI(4)-U19
ETU
As per the COI (8)-U13 ETU, however
only supports the connection of four
outside trunk lines.
7 ETUs
28
CO/PBX
lines
15 ETUs
60
CO/PBX
lines
16 ETUs
64
CO/PBX
lines
4 ETUs
16
CO/PBX
lines
COID(8)-U13
ETU
COID(8)-U19
ETU
The Central Office Caller ID ETU detects
Caller ID signals from the central office
and sends caller identification to the CPU
ETU.
This Unit supports eight outside (CO/PBX)
lines and provides circuitry for ring
detection, holding, and dialling. Electrical
fuses (posistors) are built into this ETU.
The maximum quantity allowed depends
on whether a BRT(4)-U13 ETU, PRI(1)-
U13 ETU, COI( )-U13 ETU, DID(4)-U13
ETU and/or TLI(2)-U13 ETU are installed.
These units share the total number of
trunk lines. This ETU provides loop start
service only.
4
ETUs
32
CO lines
8
ETUs
64
CO lines
8
ETUs
64
CO lines
2 ETUs
16
CO lines
COID(4)-U13
ETU
COID(4)-U19
ETU
As per the COID(8)-U13 ETU, however
only supports the connection of four
outside trunk lines.
4 ETUs
16
CO Lines
8 ETUs
32
CO Lines
8 ETUs
32
CO Lines
2 ETUs
8
CO Lines
DID(4)-U13
ETU
The Direct Inward Dialling Interface Unit
supports four DID lines. Each DID(4)-U13
ETU requires one interface slot position in
the KSU.
☛
Immediate, wink start, second dial tone,
and delay dial signalling can be
combined on this ETU.
The maximum quantity allowed depends
on whether a BRT(4)-U13 ETU, PRT(1)-
U13 ETU, COI(
8
)-U13 ETU, COID(
8
)-U13
ETU, and/or TLI(2)-U13 ETU are
installed. These units share the total
number of trunk lines.
7
ETUs
28 DID
Trunks
15 ETUs
60 DID
Trunks
16
ETUs
64 DID
Trunks
4
ETUs
16 DID
Trunks
Table 1-1 Equipment List (Continued)
Equipment
Name
Description
Xen Master
Xen Axis
Basic
KSU
Basic + 1
Expansion
KSU
Basic + 2
Expansion
KSUs