Specifications

28 x900 Series Switch
C613-03092-00 REV D
Types of SFP
transceivers
Speed and duplex settings differ depending on the type of SFP transceiver
installed in it.
■ For an SFP port with an approved fibre SFP transceiver, the speed and
duplex settings are fixed at 1000Mbps full duplex autonegotiation.
■ For an SFP port with an approved copper SFP transceiver, the available
speed and duplex settings are:
• 10Mbps and 100Mbps half duplex
• 10Mbps and 100Mbps half duplex autonegotiation
• 10Mbps and 100Mbps full duplex
• 10Mbps and 100Mbps full duplex autonegotiation
• 1000Mbps full duplex autonegotiation
Note that AT-8948 and x900-48FE switches currently support only
1000Mbps full duplex autonegotiation.
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 and AT-9924T/4SP 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.
To insert or remove
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
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.
Slide the transceiver into the SFP socket, and firmly press it until it engages. To
remove it, first release it by gently pulling the release lever, and then pull the
transceiver out of the socket. Never force a transceiver into or out of a socket.
Release Lever
SFP Transceiver
SFP