iPECS-MG Hardware Description and Installation Manual
Issue 1.1
DECT INSTALLATION
August, 2010
42
5.3.4 T1-PRIB (Primary Rate Interface Board)
The T1 and Primary Rate Interface (PRI) board interfaces to North American standards based digital
networks. Standard alarms are provided by on-board LEDs (refer to chart below). The PRIB includes
the T1-PRI interface, control and synchronous clock circuitry as well as standard alarm indications
using front panel LEDs (refer to LED Indications chart below.
The board is switch-selectable (SW1) for T1 or PRI operation both operating with a 125 usec frame at
1.544Mb/s. In T1 operation, the standards EIA/TIA-464-A and TR 41458 24-channel interface
supporting DID, TIE Line, and Loop or Ground Start are implemented. The DID and TIE Line
operation support Immediate, Delayed and Wink start signaling protocols. The Telco interface must
provide BZ8S line coding and Extended Super Frame (ESF) framing.
In PRI operation, the ISDN standard NII2 (National ISDN Interface 2) 23 Bearer and one (1) Data
channel interface is supported. The PRI operation employs ANSI T1.403, T1.601, T1.605, and
TR62411 standards.
Connection is made via a RJ-45 from the PRIB to a CSU (Channel Service Unit).
Figure 5.3.4-1 T1-PRIB
NOTE:
iPECS-MG does not support daisy chained clocking for digital lines. The clock priority and
synchronization is controlled by Admin. For details, refer to PGM 301 of the iPECS-MG Admin Manual.
The default clock is assigned based on the board type, KSU, and slot as below.
- Board – PRIB>BRIB2/BRIB4>Internal Clock
- KSU – 1’st KSU>2’nd KSU>3’rd KSU
- Slot – Slot 1>Slot 2>…>Slot 18
T1-