Table 3-2 Maximum System Capacities For Trunk Interface Etus - NEC Electra Elite IPK II General Description Manual

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Table 3-2 Maximum System Capacities for Trunk Interface ETUs

Trunk Interface
ETUs
BRT(4)-U( ) ETU
COI(4)-U( ) ETU
COI(8)-U( ) ETU
3 - 8
Description
This 4-Port Basic Rate Interface for 8
trunks provides four channels (eight
voice channels) for an ISDN-Basic
Rate Interface. Caller ID is supported.
This ETU is installed in slots S1~S4 in
the basic or first expansion B64-U20
KSU. The maximum number depends
on other trunk ETUs installed. This
ETU shares the total number of
CO/PBX lines in the system.
This 4-Port CO/PBX Line Interface has
built-in fuses (posistors), supports four
outside (CO/PBX) lines, and provides
circuitry for ring detection, holding and
dialing. The outside lines must be Loop
Start DTMF trunks. This ETU is
installed in slots S1~S8 in the basic or
expansion B64-U20 KSU. The
maximum number depends on other
trunk ETUs installed. This ETU can
provide an E911 CAMA trunk.
This ETU shares the total number of
CO/PBX lines in the system.
This 8-Port CO/PBX Line Interface has
built-in fuses (posistors), supports
eight outside (CO/PBX) lines, and
provides circuitry for ring detection,
holding and dialing. The outside lines
must be Ground Start DTMF trunks.
This ETU is installed in slots S1~S8 in
the basic or expansion B64-U20 KSU.
The maximum number depends on
other trunk ETUs installed. This ETU
can provide an E911 CAMA trunk.
This ETU shares the total number of
CO/PBX lines in the system.
Maximum Capacities
Basic Port Expanded
Package Port Package
7 23
14 23
7 23
Electra Elite IPK II
Notes
Notes 1, 6
Note 1
Note 1
Equipment