Description
2
Major Features
The major features of the AT-3012SL, AT-3016SL, and AT-3024SL Multiport
Repeaters are the following:
❑
Packet Regeneration
— This feature regenerates the packet preamble, retimes the data
packets, and extends collision fragments.
❑
Link Integrity
— The IEEE 802.3 defined link integrity test function continually
monitors the twisted pair cable to ensure link continuity of the
receive pair between the user node and the repeater.
❑
Network Utilization%
— Ranges from 1% to 80% (and greater) indicating by percent the
amount of network traffic transmitted/received.
❑
Auto Partitioning
— Also known as segmentation; each segment is automatically
partitioned whenever 32 consecutive collisions or one long collision
consisting of between 125 and 3750 Bytes are seen on the segment.
One valid packet will reset the segment and re-connect it.
❑
Jabber Lock-up Protection
— Jabber lock-up protects the repeater from being overrun with data
packets from a possibly defective device. That is, jabber lock-up
automatically prevents transmitted data from reaching the
repeater if the transmitted data time exceeds a specified duration
(in the range of 20 to 150 ms).
Overall Features
The repeaters have the following overall features:
❑
IEEE 802.3 compliant 10Base-T repeater, Ethernet Version 1.0 and 2.0
compatible
❑
Supports all standard Ethernet media, including fiber optic, via AUI
port (external transceiver may be required) for the backbone
connection (Ethernet ports are 10BaseT only.)
❑
AUI port to accommodate a 10Base5 or thick Ethernet connection to
the network backbone through a drop cable
❑
BNC port to accommodate a 10Base2 or thin Ethernet connection to the
network backbone through a link segment
❑
12, 16 or 24 10Base-T (RJ-45) network ports, depending on model
❑
Standalone or department concentrator applications
❑
Receive and Port OK LEDs per port
