
IR-ETH/QN Options C-1
Appendix C
IR-ETH/QN Interface Module
The IR-ETH/QN interface module includes a high performance self-learning Fast
Ethernet bridge, which is connected to the LAN via a single 10BaseT or 100BaseT
port, operating in full or half duplex and providing simple and cost-effective
interconnection between 10/100BaseT LANs. The IR-ETH/QN interface module
also supports IEEE 802.1p frames and IEEE 802.1q frames, enabling VLAN
applications.
The module automatically learns MAC addresses of the LAN to which it is
connected. Its LAN table stores up to 1,024 addresses with 5-minute automatic
aging.
Filtering and forwarding is performed at the maximum theoretical rate of
150,000 packets per second (wire speed). The buffer with 0.512 Mbit SRAM can
hold 85 frames with a throughput latency of one frame. The forwarding of the
multicast messages from LAN to WAN can be disabled.
Figure C-1 shows a typical application using RIC-E1 with IR-ETH/QN module.
RIC-E1
10/100BaseT LAN
G.703
Network
Figure C-1. Typical Application of RIC-E1 with IR-ETH/QN Module
C.1 IR-ETH/QN Options
Standalone RIC-E1
Figure C-2 shows the rear panel of the standalone RIC-E1, equipped with
IR-ETH/QN module. Table C-1 lists the module's RJ-45 connector pinout.
100M
LINK
10/100BASE-T
ACT
LINK
TX RX
Figure C-2. Rear Panel of RIC-E1 with IR-ETH/QN Module
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