Specifications

Chapter 1 Introduction Installation and Operation Manual
1-2 Overview RICi-4E1/T1, RICi-8E1/T1 Ver. 2.0
• 4 x 10/100BaseT copper ports. The fourth port can be dedicated for
out-of-band management.
• 2 x 10/100BaseT copper ports plus 2 x SFP-based 100BaseFx optical ports.
Applications
Typical applications include Ethernet VPN services over E1/T1 links, and
aggregation of enterprise LANs over E1/T1.
Figure 1-1 illustrates a typical application, where a unit connects users in remote
LANs to the packet network over E1/T1 with an SDH/SONET connection.
Figure 1-1. Typical Application
Features
Ethernet Interfaces
The Fast Ethernet interfaces operate in full or half (10/100BaseT only) duplex,
with flow control (pause frames). Ethernet and 802.3 standards are supported.
Copper Ethernet physical interfaces are electrical 10/100BaseT and support
autonegotiation.
Optical Ethernet physical interfaces are SFP-based 100BaseFx.
In 4 x 10/100BaseT configurations, you can dedicate the fourth port to
out-of-band local management.
The Ethernet ports can be configured to accept traffic only from the first MAC
address(es) from which they receive traffic. You can configure how many MAC
addresses should be protected in this way, for each Ethernet port.
WAN Interfaces
RICi-4E1/T1, RICi-8E1/T1 supports four or eight unframed E1 or eight framed T1
interfaces.
The E1 ports support a data rate of 2.048 Mbps, unframed, and are G.703
compliant.
The T1 ports support a data rate of 1.544 Mbps, with D4 or ESF framing. The
ports are compliant with AT&T TR62411 and ANSI T1.403 standards.
MLPPP
The unit bonds four or eight E1/T1 ports utilizing the Multilink Point-to-Point
Protocol (MLPPP), bridging the bandwidth gap between E1/T1 and E3/T3, and
creating a large virtual pipe.