T1 over Ethernet Multiplexer (TDM Over IP / TDMoIP)

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T1 over Ethernet Multiplexer (TDM Over IP / TDMoIP) solutions

The VCL-T1 over Ethernet multiplexer (TDM over IP / TDMoIP) product is used to provide upto 1T1, 2T1, 8T1 or 16T1 communication channels over Ethernet or IP networks. This product transmits information at T1 (1.544 Mbit/s). The equipment supports point-to-point and point-to-multi-point applications.

To transport T1 channels over an Ethernet or an IP network and to accelerate traditional telecom services to migrate to the IP packet networking technology, the VCL-T1 over Ethernet multiplexer product uses TDM over IP technology. This solution transports the legacy T1 data through the existing Ethernet or IP network.

VCL-T1 over Ethernet multiplexer product is the new generation of the TDM over IP equipment with IP circuit emulation that supports transportation of up to 16 T1 and 2 local Ethernet ports over an Ethernet or an IP network. The uplink Ethernet ports and user data port are IEEE 802.3 compliant, 10/100BaseT auto-sensed ports.

T1 - TDM over IP solutions offered are:

Valiant also offers its wide range of E1 over Ethernet (TDMoIP), Ethernet over E1 converters, Ethernet over DS3 and E3 converters.

 


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 T1 services. One particular application is to provide a combination of Ethernet and T1 services using low cost Wireless LAN bridges, or over RPR Ethernet rings. Operators can use the Multi-T1 - T1 over Ethernet multiplexers to provide a provide a combination of Ethernet and legacy T1 (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-T1 - T1 over Ethernet can be used to emulate transparent T1 channels over an Ethernet link with an acceptable QoS (Please see the note: QOS, below), so that a majority of the existing T1 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, T1 ports supported (available in 1T1, 2T1, 8T1 and 16T1 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 T1 clock recovery, low jitter and wander
  • Low processing delay for T1 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 T1 QoS
  • Local and remote T1 LOS and AIS and packet loss indication for trouble-shooting and maintenance
  • Support cascade concatenate for more than 4/8/16 T1 ports

    Application: VCL-T1 over Ethernet is used to setup 1 to 16 clear T1 channels over LAN or IP networks, as depicted in Fig. 1 and Fig 2.

Point to Point 4/8/16 x VCL-T1 over Ethernet Application Diagram (figure below)

Point to Point 4x VCL-T1 over Ethernet Application Diagram

Figure 1 - As Above: Point to Multipoint 4/8/16 x VCL-T1 over Ethernet Application Diagram

Point to Multipoint 4/8/16 x VCL-T1 over Ethernet application (figure below)

Point to Multipoint 4x VCL-T1 over Ethernet Application Diagram

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