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

Document Revision 3
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Table 3-3 Maximum System Capacities for Trunk Interface ETUs

Trunk Interface
ETUs
BRT(4)-U( ) ETU
COI(4)-U( ) ETU
COI(8)-U( ) ETU
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3 - 12
Description
This 4-Port Basic Rate Interface for
eight 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
System Specifications
Electra Elite IPK II
Notes
Notes 1, 6
Note 1
Note 1