Allied Telesis AT-S102 - Manual (Page 66)

Chapter 3: OAM-based Features
66
Note
The AT-CM70S Line Card, which is a double-slot card, does not
support the first RPS failure signal because it uses both slots in the
AT-CV1203 Chassis, leaving no available slot for a management
card.
AT-CM3 Line Cards
The AT-CM3 Line Cards also support the first RPS failure signal. And as
with the AT-CM2 Line Cards, they send the signal when the AT-CV1203
Chassis loses power on just one of its two power supplies.
The difference is that these line cards, when installed in the newer version
of the AT-CV1203 Chassis, do not require the AT-CV5M02 Management
Card because they are able to determine for themselves when the chassis
loses power on a single power supply module. This leaves the second slot
in the chassis available for another media converter line card. This is
illustrated in Figure 10.
Figure 10. AT-CM3 Line Cards and First RPS Failure Signal
However, if you have the older version of the AT-CV1203 Chassis, then
just as with the AT-CM2 Line Cards the chassis must have the
management card to support the first RPS failure signal. As stated earlier,
you do not have to configure the management card or connect its 10/
100Base-TX port to your network. The card simply has to be in the
chassis.
FAN1
PS1
RDY
A T -CV5000
1. The remote AT-CV1203
Chassis loses power on
one power supply.
2. The remote AT-CM3 Card
sends the first RPS failure
signal to its local counterpart in
the AT-CV5000 Chassis.
5. The management card enters
the event in the event log and
sends an SNMP trap.
4. The local AT-CM3 Card sends
the signal over the backplane to
the management card.