CHAPTER 5. Connecting Trunk Line Circuit
5-4
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5.3 ISDN CO Lines
OfficeServ 100 system is fully ISDN compatible. For Basic Rate Interface BRI card can be
used as ISDN TE(Terminal Equipment) or NT2(Network Termination 2/Multiway ISDN
Interface). When programmed to T-mode(default setting) this port provides T point and can
be access NT(NT1 or NT2) derived from CO Line Connect each point of BRI card to NT
to use as ISDN TRK.
When connecting BRI Card
When you are to connect a T port to a NT, please be careful if there is a
termination present in any other place than this BRI card on the bus. Since typical
100 ohm line termination resistance exists on each port of this card.
PRI or TEPRI cards supports a RJ45 connector to access ISDN PRI lines from CO Connect.
Figure 5.3 ISDN Interface Connection for PRI
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