Hardware manual

Electra Elite Issue 8
System Hardware Manual 1 - 11
DTI-U( ) ETU
(S7000 or lower)
The Digital Trunk Interface ETU allows termination
of a Fractional T1 (24 DS-0 channels) line. This
ETU contains circuitry for outside ring detection,
holding, dialing, control function, Tie line (E&M),
and DID signaling.
Automatic Number Indication (ANI) is supported.
Only the DTI-U30 ETU supports K-CCIS common
channel signaling.
A combination of Loop Start and Ground Start
trunks, DID trunks, or Tie lines can be used on the
ETU. Each trunk is assigned in groups of four.
DTMF or Dial Pulse dialing is supported.
This ETU is installed in slots S1 and S4 in the basic
B64-U10 KSU or slot S1 of the first expansion
B64-U10 KSU.
The maximum number depends on other trunk
cards installed. This ETU shares the total number
of CO/PBX lines in the system.
The maximum combination of DTI-U( ) and
PRT(1)-U( ) ETUs is 3 per system.
A CLKG-U( ) Unit must be installed.
2 ETUs
48
lines
3 ETUs
64
lines
3 ETUs
64
lines
DTI-U( ) ETU
(S8000 or higher)
Same as above with the following exceptions:
• S8000 has no slot limitations.
• A maximum of 14 of the following 4-port trunk
interface ETUs can be installed:
COIB(4)-U( ) installed as COID(4)
COID(4)-U( ) ETU
DTI-U( ) installed as DTI4
IPT(4)-U( ) installed as COID(4) or DTI4
PRT(1)-U( ) installed as PRT4
8 ETUs
64
lines
8 ETUs
64
lines
8 ETUs
64
lines
EXPT(2)-U( ) ETU
This ETU allows multiple Electra Elite systems to
be connected with a K-CCIS connection, and
combines the functionality of the EXP-U ETU and
two DTI-U( ) ETUs (one DTI for system 1 and one
DTI for system 2).
1
Equipment Name Description Basic KSU
Basic + 1
Expansion
KSU
Basic + 2
Expansion
KSUs