Hardware manual

Electra Elite Issue 8
System Hardware Manual 1 - 9
COIB(8)-U20/U30
ETU
This ETU can function the same as the COI(8)-U( )
or COID(8)-U( ) ETU to provide Central Office
interface. Only the COIB(8)-U30 can support the
CO Message Waiting Indication feature (S9500).
When ETU is set for COID mode, Loop Start trunks
and Caller ID trunks are supported. When the ETU
is set for COI mode, Loop Start is supported.
Ground Start Trunks are not supported. Caller
ID is not supported in COI mode. Fax CO Branch
is not supported.
Only DTMF signaling is supported.
This ETU can provide an E911 CAMA trunk on port
3 or 7.
For COI mode ETUs can be placed in any IF Slot.
For COID mode: Caller ID trunks must be installed
in slots S1~S4 in Basic and first expansion KSU
(S7000 or lower). S8000 or higher has no slot
limitations.
The maximum number depends on other Trunk
cards installed.
This ETU shares the total number of CO/PBX lines
in the system.
Tip and RIng electrical fuses are provided to
comply with UL 1459 requirements.
COI Mode
8 ETUs
COID Mode
8 ETUs
COID(4)-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 four outside (CO/PBX) lines and
provides circuitry for ring detection, holding, and
dialing.
This ETU is loop start, DTMF 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
16
CO (Class)
lines
8 ETUs
32
CO (Class)
lines
8 ETUs
32
CO (Class)
lines
Equipment Name Description Basic KSU
Basic + 1
Expansion
KSU
Basic + 2
Expansion
KSUs