3 - 12 Equipment
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Document Revision 4 Electra Elite IPK
DTI-U40 ETU T1/FT1 Trunk Interface
The Digital Trunk Interface ETU
terminates Fractional T1 trunks (up to24
DS-0 channels). This ETU supports
K-CCIS, ANI/DNIS trunks, and CSU
Less Function on T1.
A combination of Loop Start and Ground
Signaling can be used on the DTI-U40
ETU. Dial Pulse dialing, DTMF, Tie line
(E&M), and DID are supported.
This ETU has 24 built-in DTMF
detectors. Each trunk is assigned in
groups of four.
When channels are assigned to ANI,
Feature Group D is supported. Feature
Group D incoming MF/outgoing DTMF
signaling is also supported.
This ETU also supports K-CCIS
signaling with point-to-point E&M Tie
Lines.
This ETU is installed in any slot in the
basic or 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.
EXPT(2)-U ETU T1/FT1 Trunk Interface
The EXPT(2)-U ETU allows multiple IPK
Systems to be connected with a K-CCIS
connection.
This ETU combines the functions of the
EXP-U ETU and the DTI-U( ) ETUs (one
DTI for system 1 and one DTI for system
2.
This ETU can be installed only in S1 of
the basic cabinet of the system.
A maximum of four cabinets can be
connected.
Note 1, 6
Table 3-2 Maximum System Capacities for Trunk Interface ETUs (Continued)
Trunk Interface
ETUs
Description
Maximum Capacities
Notes
Basic Port
Package
Expanded
Port Package
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