Interface Board (T1Ib) - STARPLUS Triad 1 Product Description Manual

Peripheral Boards
T-1 Interface Board (T1IB)
The T1IB board allows the network connection to a T-1 1.544MB digital interface.
This board supports standard D4 framing format with robbed bit signaling. Extended
Super frame (ESF) format is also supported.
The board can support TIE, Loop and Ground start signaling emulation per channel.
The board requires an external CSU unit.
The board has a 15-pin D-Sub connector for connection to a CSU unit.
A Normal/Service switch located toward the top of the card allows the card to be inserted
or removed from the system while under power.
The T1IB card can accept up to two DTMF-A units in a daughter board type arrangement
The Phase Lock Loop unit (PLLU) must be installed on the MPB in order for the T1IB board
to operate properly.
The card ejector tabs are color coded white.
This board can only be installed in the Basic Cabinet (BKSU) Slots 0-8. A maximum
of six T1IB boards can be installed in the system.
Figure 11-8: T1IB (T-1 Trunk Board)
Chapter 11 - Triad 3 System Configuration
11-13