NEC ElectraElite 48, System Hardware Manual

Page: 65 / 435

Issue 6 Electra Elite
1 - 8 Introduction
COID(4)-U( ) ETU
The Central Office Caller ID ETU detects Caller ID signals from the
central office and sends caller identification to the MBD-U10 Unit.
Electrical fuses (posistors) are built into this ETU.
This unit provides loop start DTMF trunks only and supports four
outside (CO/PBX) lines. The unit provides circuitry for ring
detection, holding, and dialing.
This ETU is installed in slot S3 or S4 in the B48-U10 KSU (
S7000 or
lower
).
For COID mode (
S8000 or higher
): Caller ID trunks can be
installed in slots S3~S6.
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.
2 ETUs
8 CO (Class) lines
COID(8)-U( )ETU
The Central Office Caller ID ETU detects Caller ID signals from the
central office and sends caller identification to the MBD-U10 Unit.
Electrical fuses (posistors) are built into this ETU.
This unit provides loop start DTMF trunks only and supports eight
outside (CO/PBX) lines. The unit provides circuitry for ring
detection, holding, and dialing.
This ETU is installed in slots S3 or S4 in the B48-U10 KSU (
S7000
or lower
).
For COID mode (
S8000 or higher
): Caller ID trunks can be
installed in slots S3~S6.
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.
2 ETUs
16 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 start
signaling can be combined on this ETU.
This ETU is installed in slots S3~S6 in the B48-U10 KSU.
The maximum number depends on other Trunk cards installed.
These ETUs share the total number of CO/PBX lines in the system.
4 ETUs
16 DID Trunks
Equipment Name Description
KSU Maximum
Quantities