Miniature Ethernet to E1/T1 Remote Bridge

• Full-duplex 100/1000 Ethernet remote bridge over E1 or T1
• Standard GFP encapsulation (ITU-T G.8040, G.7041/Y 1303)
• Fault propagation from WAN to LAN link
• LAN traffic transported transparently
• Handles 64 to 2016-byte frames, including VLAN tagged frames
• Supports Jumbo Frames in GbE mode Flow control mechanism for LAN and WAN traffic
• Supports multi-source agreement (MSA) product identification codes
• Hot-swappable, with a special release mechanism

• Reduces CapEx by providing a cost-effective alternative to standalone units or conversion cards
• Allows easy integration with autonomous operation
• Increases network flexibility by allowing quick, ad-hoc installations
• Supports a scalable migration to fiber Ethernet access
• Eliminates the need for equipment certification and integration, and for special operator training
• Interoperable with third-party routers and switches

Gigabit Ethernet over TDM-based WANs
The MiRICi-E1/T1 is an intelligent SFP remote bridge, forwarding Fast Ethernet or Gigabit Ethernet traffic to TDM-based WANs at full duplex wire-speed. It enables quick and easy rollout of new Ethernet services over legacy TDM infrastructure, without the need for costly dedicated devices. The miniature Ethernet to E1/T1 remote bridge simplifies management, while saving space, power consumption and cabling.

Allowing service providers to adapt network interfaces as needed, the MiRICi-E1/T1 is ideal for delivering transparent LAN services and providing remote branch connectivity over leased lines and TDM-based WANs, for service providers, private enterprise and campus networks. In addition, it enables remote Ethernet connectivity over E1/T1 radio links.

Standard Encapsulation
The miniature Ethernet to E1/T1 remote bridge supports standard GFP encapsulation to allow book-end connections as well as third-party GFP interoperability.

Advanced Management Capabilities
The MiRICi-E1/T1 can be monitored, configured, and tested using the following ports and applications:

• Out-of-band management via an I²C interface

• Inband management via the Ethernet port using a Web browser
  

The MiRICi-E1/T1 employs remote loopback (RLB) and local loopback (LLB) diagnostics for detecting and troubleshooting physical layer link failures. In addition, it enables WAN to LAN fault propagation alarms, and can receive T1 “Loop Up” and “Loop Down” commands using standard FDL bit codes.

Flow Control
To avoid overwhelming the WAN port, a flow control mechanism is activated if Fast Ethernet or Gigabit Ethernet traffic exceeds the WAN link capacity, sending Pause packets towards the LAN side.

SFP Enclosure
The MiRICi-E1/T1 can be installed on any device that complies with the multi-source agreement (MSA) specifications. Running on power derived from the host device, it requires no additional power supply.

The MiRICi-E1/T1 operates opposite remote MiRICi units or any Ethernet device that supports standard GFP encapsulation, such as RAD’s RICi-E1/T1 Fast Ethernet over E1/T1 NTUs and Egate-100 Gigabit Ethernet over TDM Aggregation Gateway.