Hardware Reference
21
C613-03092-00 REV J
An error message is displayed when an SFP port cannot operate at the
specified speed or duplex mode.
When using SFP ports 1 to 4 on AT-9924T switches, the corresponding RJ-45
ports (1 to 4) are disabled. However, when the SFP transceiver is removed, the
RJ-45 port becomes operational again.
Inserting and
removing an
SFP transceiver
The SFP transceiver must be inserted the correct way in the socket, which
varies depending on whether the switch has a single or dual row of sockets.
For example, x900-48FE switches have single-row sockets, but AT-9900 series
switches have a dual row. See the example of dual-row sockets for a copper SFP
transceiver in the figure below. Notice the varying position of the release lever.
Warning
Do not look into SFP cables or transceivers. Even disconnected fibres
and connectors can emit invisible laser radiation.
x900-48FS switch ports
n/a
no autonegotiation
100 Mbps half/full duplex
AT-9924T switch ports
autonegotiate
10 Mbps half/full duplex
100 Mbps half/full duplex
1000 Mbps half/full duplex
autonegotiate
1000 Mbps full duplex
AT-9924SP switch ports
autonegotiate
10 Mbps half/full duplex
100 Mbps half/full duplex
1000 Mbps half/full duplex
no autonegotiation
100 Mbps half/full duplex
autonegotiate
1000 Mbps full duplex
x900-12XT/S combo ports
autonegotiate
1000 Mbps half/full duplex
autonegotiate
100 Mbps half/full duplex
1000 Mbps half/full duplex
x900-24XS switch ports
autonegotiate
10 Mbps half/full duplex
100 Mbps half/full duplex
1000 Mbps half/full duplex
no autonegotiation
100 Mbps half/full duplex
autonegotiate
1000 Mbps full duplex
XEM-12S switch ports
autonegotiate
1000 Mbps half/full duplex
autonegotiate
100 Mbps half/full duplex
1000 Mbps half/full duplex
Port Type
(cont)
Copper
(cont)
Fibre
(cont)
