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Installation Manual

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T2 Name T1 Name Function<br />

BUSY BUSY B-channels busy (red LED lights up if at least 1 B-channel is busy)<br />

RAI (ATD) RAI Remote frame alarm (red LED lights up on alarm)<br />

AIS (SIA2M) AIS Too many "1's in the 2-Mbit binary train (red LED lights up on alarm)<br />

NOS (MS) NSIG Absence of 2-Mbit signal (red LED lights up on alarm)<br />

CRC (TE) CRC CRC error (red LED lights up on alarm)<br />

LOS (PVT) NSYN Loss of frame alignment (red LED lights up on alarm)<br />

2.4.2.8 APA Boards<br />

This board is used to connect to the analog public network (2, 4 or 8 LR).<br />

The APA board does not support pulse dialing in Australia and New Zealand.<br />

2.4.2.9 LAN-X Boards<br />

These boards are used to create a local area network (LAN) by connecting client PCs,<br />

IP-Phones, an external Lanswitch and servers.<br />

2-11

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