The state-of-art design provides the highest availability with the accurate timing signal and data bit stream reconstruction. Predefined system parameter profiles that according to different application requirements, ultimately simplify the installation process and saving the maintenance cost.

Telecom and enterprise users can save a lot of access and equipment costs and generate new revenue resources by offering different types of legacy services over Ethernet networks. It is also suitable for connecting to the ethernet based wireless equipment to achieve fast deployment of E1 services. One particular application is to provide a combination of Ethernet and E1 services using low cost Wireless LAN bridges, or over RPR Ethernet rings. Operators can use the Multi-E1 - E1 over Ethernet multiplexers to provide a provide a combination of Ethernet and legacy E1 (TDM) services over wired or wireless packet networks, or RPR rings.

TDM technology occupies fixed transmission bandwidth which is suitable for real-time applications such as voice and video. Ethernet technology is based on statistical multiplexing, transmitting and exchanging information in packets. It does not take up a fixed transmission bandwidth, which is good for achieving higher bandwidth utilization. But Ethernet technology does not provide adequate QoS for real time applications.

The Multi-E1 - E1 over Ethernet can be used to emulate transparent E1 channels over an Ethernet link with an acceptable QoS (Please see the note: QOS, below), so that a majority of the existing E1 based applications can be readily setup over Ethernet LANs and WANs. (Note: QOS shall depend on the quality of the Ethernet link and packet losses).

Features

• Upto 16, E1 ports supported (available in 1E1, 2E1, 8E1 and 16E1 versions)
• Supports point-to-point and point-to-multi-point applications.
• Uplink ports : 1+1 backup supported
• User-friendly Web server supported for easy setup and maintenance
• Stable E1 clock recovery, low jitter and wander
• Low processing delay for E1 channels, high bandwidth usage efficiency
• Resist to packet loss, with PCM frame synchronization protection
• User definable encapsulation packet size for different application
• Enough jitter buffer to resist packet delay variation (PDV)
• Local Ethernet port throughput limiting, assuring E1 QoS
• Local and remote E1 LOS and AIS and packet loss indication for trouble-shooting and maintenance
• Support cascade concatenate for more than 4 E1 ports

Application: VCL-E1 over Ethernet is used to setup 1 to 4 clear E1 channels over LAN or IP networks,
As depicted in Fig. 1 and Fig 2.

Point to Point 4x VCL-E1 over Ethernet Application Diagram (figure below)

Point to Multipoint 4 x VCL-E1 over Ethernet application (figure below)