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).
The APA board does not support pulse dialing in Australia and New Zealand.
2.4.2.9 LAN-X Boards
These boards are used to create a local area network (LAN) by connecting client PCs,
IP-Phones, an external Lanswitch and servers.
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