Provides either a T1 interface supporting 24 DS0 channels or an ISDN PRI interface supporting 23 B (bearer) channels, one D (datalink) channel and 12 digital stations
.A jumper on this card must be plugged onto pins 7 and 8 of J3 to enable ISDN PRI functions. Any (or all) of the available channels of the T1/PRI span (24 on T1, 23 on PRI) can be assigned, and the card supports loop-start, ground-start, E&M and DNIS/DID trunk types with immediate, wink-start or dial-tone-start signaling.
This card is equipped with a build-in CSU that can be connected directly to a network interface unit, SmartJack, or ISDN PRI. Up to 12 Digital Feature Phones can be connected to the card. All 24 CO ports are allocated (regardless of whether they are assigned or used).
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