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

Document Revision 4
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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
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3 - 8
Description
4-port ISDN Interface for 8 trunks
This Basic Rate Interface unit provides
four channels (eight voice channels) for
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 cards installed. This ETU shares
the total number of CO/PBX lines in the
system.
A CLKG-U( ) Unit must be installed.
4-port CO/PBX Line Interface
Electrical fuses (posistors) are built into
this ETU that 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.
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.
Maximum Capacities
Basic Port Expanded
Package Port Package
2 8
4 16
Electra Elite IPK
Notes
Note 1
Note 1
Equipment