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Chapter
2
2.4.2.7.1 Function of the LEDs
T2 Name
BUSY
RAI (ATD)
AIS (SIA2M)
NOS (MS)
CRC (TE)
LOS (PVT)
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 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.
Unlike the 1st generation boards, the LEDs of the A and B ports are both located at the top of the
board. The Led display is as follows:
•
Green LED (left) = link status and activity:
•
off: link disconnected
•
on: link connected
•
blinking: link active
•
yellow LED (right) = speed:
8AL91217USAA - Ed. 01 - July 2018 - Installation Manual
Hardware description
ISDN ACCESS - E1
NETW
PBX
T1 Name
Function
BUSY
B-channels busy (red LED lights up if at least 1 B-channel is busy)
RAI
Remote frame alarm (red LED lights up on alarm)
AIS
Too many "1's in the 2-Mbit binary train (red LED lights up on alarm)
NSIG
Absence of 2-Mbit signal (red LED lights up on alarm)
CRC
CRC error (red LED lights up on alarm)
NSYN
Loss of frame alignment (red LED lights up on alarm)
"Analog Public Access".
1
2
BUSY RAI
AIS
NOS
CRC
LOS
6
3
4
5
7
PRA-T2
APA8
8
30/216
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