NEC Electra Elite IPK - Page 117

3 - 14 Equipment
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Document Revision 4 Electra Elite IPK
Note 1: Calculating maximum capacities is based on the system having a minimum of eight Electronic Station Interface (ESI)
ports and four Trunk ports.
Note 2: When 2-port Trunk Interface ETUs are installed, the system uses four ports from its maximum port capacity.
Note 3: With the Basic Port Package, a maximum of four DTI-U( ) ETUs, PRT(1)-U( ) ETUs, or a combination of both can be
installed. If four DTI or PRT ETUs or a combination of both are installed, up to four trunks each can be assigned.
Note 4: With the Expanded Port Package, a maximum of eight DTI-U( ) or PRT(1)-U( ) ETUs, or a combination of both can
be installed. When eight DTI or PRT ETUs or a combination of both are installed, up to eight trunks each can be
assigned.
Note 5: With the Electra Elite IPK Expanded Port Package, a maximum of 14 of the following 4-port trunk-type interface
ETUs can be installed:
H COIB(4)-U( ) ETU [installed as COID(4)-U( ) ETU]
H DTI-U( ) ETU (installed as DTI4)
H IPT(4)-U( ) ETU [installed as COID(4)-U( ) ETU or DTI4]
PRT(1)-U( ) ETU ISDN-Primary Rate Trunk Interface
The Integrated Service Digital network
(ISDN)-Primary Rate Interface (PRI) is a
Public Switched Telephone Network
(PSTN) service that provides 23 B
channels and one D channel (23B + D)
for voice call trunking. The B channels
provide 23 CO/DID connections.
This ETU is installed in slots S1 ~ S8 in
the basic and expansion B64-U20 KSU.
The maximum number depends on other
trunk cards installed. This ETU shares
the total number of Trunk lines in the
system.
A CLKG-U( ) Unit must be installed.
4 8 Note 1, 3, 4
TLI (2)-U( ) ETU 2-port Tie Line Interface
The Tie Line Interface ETU supports the
termination and operation of two E&M
Tie lines (4-wire, type I and type V, and
10/20 pps Dial Pulse or DTMF).
 Immediate, wink start, second dial
tone, and delay dial signaling can be
combined on this ETU.
This ETU is installed in slots S1~S8 in
the 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.
4 16 Note 2
Table 3-2 Maximum System Capacities for Trunk Interface ETUs (Continued)
Trunk Interface
ETUs
Description
Maximum Capacities
Notes
Basic Port
Package
Expanded
Port Package