Vodavi XTS-IP Installation Manual page 74

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Chapter 3 - System Installation
4. Position one of the DTRU4 modules so that the CN2 and CN1 connectors align with the
CN8 and CN9 connectors on the T1IB respectively.
5. Push the DTRU4 module onto these connectors to seat it securely.
6. Position the second DTRU4 module so that the CN2 and CN1 connectors align with the
CN4 and CN5 connectors on the T1IB respectively.
7. Push the DTRU4 module onto these connectors to seat it securely.
Primary Rate Interface Board
The Primary Rate Interface Board (PRIB) provides one Primary Rate Interface circuit. Each
circuit contains 23 bearer and one data channel (23B+D). When a PRIB card is programmed
into the XTS-IP system, the system interprets all B channels as trunks. Thus, one PRIB which
contains 23B+D circuits provides 23 line appearances to the XTS-IP system. The PRIB card uses
24 time slots when installed. A feature of Flash 24 programming allows for partial signaling
over T1IBs or PRIBs. This allows you to limit the amount of time slots used per card to four, or
multiples of four up to 20.
The PRIB must usually be used in conjunction with a Channel Service Unit (CSU). Connection
is made via a DB15 from the PRIB to the CSU. When networking systems that are less than
50 feet apart, no CSU is required.
XTS-IP - Installation Manual
CN2
CN1
CN5
CN9
CN8
Figure 3-19: T1IB w/DTRU4 Module Installation
CN2
CN1
CN4
CO/PBX Connections
December 2005