2.4.2.7 PRA Boards
This board provides 1 primary access for connecting the OXO Connect system to the ISDN digital
public network or to private networks:
• PRA-T2, DLT2 : 30 x 64-Kbps B-channels + 1 x 64-Kbps D-channel; 2048 Kbps.
• PRA-T1 : 23 x 64-Kbps B-channels + 1 x 64-Kbps D-channel; 1544 Kbps.
• PCM R2: 30 x 64-Kbps B-channels + 1 x 4-Kbps signaling channel; 2048 Kbps.
The diagram below shows the end-plate of the PRA-T2 board, but the other PRA boards are similar.
ISDN ACCESS - E1
BUSY RAI AIS
NOS CRC LOS
PRA-T2
PBXNETW
2.4.2.7.1 Function of the LEDs
T2 Name T1 Name Function
BUSY BUSY B-channels busy (red LED lights up if at least 1 B-channel is busy)
RAI (ATD) RAI Remote frame alarm (red LED lights up on alarm)
AIS (SIA2M) AIS Too many "1's in the 2-Mbit binary train (red LED lights up on alarm)
NOS (MS) NSIG Absence of 2-Mbit signal (red LED lights up on alarm)
CRC (TE) CRC CRC error (red LED lights up on alarm)
LOS (PVT) NSYN Loss of frame alignment (red LED lights up on alarm)
2.4.2.8 APA Boards
This board is used to connect to the analog public network (2, 4 or 8 LR).
1
2
3
4
"Analog Public Access".
APA8
5
6
7
8
The APA board does not support pulse dialing in Australia and New Zealand.
2.4.2.9 LanX-2 Boards
The LanX8-2 and LanX16-2 are second generation boards integrating respectively 1 or 2 Ethernet
Gigabit ports for a Lanswitch/Layer 2 configuration. Any port can be used as an Uplink, as all the ports
are auto MDI/MDIX.
Chapter
2
Hardware: Platform and Interfaces
3EH21123USAA - Ed. 01 - April 2017 - Installation Manual 28/207
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