Electra Elite IPK II Document Revision 1
General Description Manual 3 - 9
COIB(4)-U( ) ETU This 4-Port CO/PBX Line Interface can
function the same as the COI(4) or
COID(4) ETU to provided a Central
Office Interface. When set for COID
mode, Loop Start DTMF trunks and/or
Caller ID trunks are supported, and the
ETU supports loop start only. When
the ETU is set for COI mode, loop start
or ground start DTMF trunks are
supported, but Caller ID is not
supported. Connections for ground
start trunks are polarity sensitive. This
ETU can provide an E911 CAMA
trunk. For COID mode, Caller ID
trunks must be installed in slots
S1~S4. This ETU shares the total
number of CO/PBX lines in the system.
Tip and Ring electrical fuses are
provided to comply with UL 1459
requirements.
14 23 Notes 1, 3
COIB(8)-U( ) ETU 8-Port CO/PBX Line Interface can
function the same as the COI(4) or
COID(4) ETU to provided a Central
Office Interface. When set for COID
mode, Loop Start DTMF trunks and/or
Caller ID trunks are supported, and the
ETU supports loop start only. When
the ETU is set for COI mode, loop start
or ground start DTMF trunks are
supported, but Caller ID is not
supported. Fax CO Branch is not
supported. Connections for ground
start trunks are polarity sensitive. Only
DTMF signaling is supported. This
ETU can provide an E911 CAMA
trunk. For COID mode, Caller ID
trunks must be installed in slots
S1~S4. This ETU shares the total
number of CO/PBX lines in the system.
Tip and Ring electrical fuses are
provided to comply with UL 1459
requirements.
7 23 Note 1
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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