Hardware manual

Issue 8 Electra Elite
1 - 10 Introduction
COID(8)-U( ) ETU
The Central Office Caller ID ETU detects Caller ID
signals from the central office and sends caller
identification to the CPUB( )-U( ) ETU.
Electrical fuses (posistors) are built into this ETU
That supports eight outside (CO/PBX) lines and
provides circuitry for ring detection, holding, and
dialing.
This ETU is loop start only and is installed in slots
S1~S4 in the basic or first expansion B64-U10 KSU
(S7000 or lower). S8000 or higher has no slot
limitations.
This ETU can provide an E911 CAMA trunk.
The maximum number depends on other trunk
cards installed. This ETU shares the total number
of CO/PBX lines in the system.
4
ETUs
32
CO (Class)
lines
8 ETUs
64
CO (Class)
lines
8 ETUs
64
CO (Class)
lines
DID(4)-U( ) ETU
The Direct Inward Dialing Interface Unit supports
up to four DID or four 2-way DID lines. Each
DID(4)-U( ) ETU requires one interface slot position
in the KSU.
Immediate, wink start, second dial tone, and
delay dial signaling can be combined on this
ETU.
This ETU is installed in slots S1~S8 in any
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.
7
ETUs
28 DID
Trunks
15 ETUs
60 DID
Trunks
16
ETUs
64 DID
Trunks
Equipment Name Description Basic KSU
Basic + 1
Expansion
KSU
Basic + 2
Expansion
KSUs