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Trunk Interface Cards
Trunk interface cards interface the system universal ports to the individual
outside trunks. Four types of cards are available to meet various outside
communication requirements.
UNIVERSAL TRUNK CARD
(IX-8UNTK)
The IX-8UNTK card is an analog trunk card that was developed for
improving the speech quality of IP phones over analog trunks. This card
employs a linear CODEC and a DSP-based echo canceller. The IX-8UNTK
has a combination of features found on the IX-8CITK and the IX-8LGTK-2
trunk cards with the addition of an echo canceller. The IX-8UNTK card is
equipped with eight circuits for analog trunks and Caller ID. Each of the
eight trunks can be set as Loop Start or Ground Start as required. The
8UNTK card is only UL approved for use in the Iwatsu Enterprise-CS (ECS)
cabinets: ECS common modules (IX-CME) or ECS expansion modules (IX-
EXPME1, IX-EXPME2).
Ports: 8 ports/card
Additional Power: -48Vdc (IX-DCDCM) when used as ground start trunks
are equipped.
Features: Loop/Ground start selection, 600/900 Ohm impedance selection,
Long/Short distance selection
GROUND START / LOOP START TRUNK INTERFACE
CARD
(IX-8LGTK-2)
An IX-8LGTK-2 card interfaces the Iwatsu Enterprise-CS to eight central
office or PBX circuits. On-board selection allows this card to be used with
the loop or ground start circuits.
Ports: 8 ports/card
Additional Power: -48Vdc (IX-DCDCM) when used as ground start trunks
are equipped.
Features: Loop/Ground start selection, 600/900 Ohm impedance selection,
Long/Short distance selection
GENERAL DESCRIPTION - 43
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