The Ethernet over DS3 converter may be accessed by the user for configuration and monitoring through a Windows based GUI that is shipped with the system. It may be also accessed remotely over a TCP-IP network.

Frequently asked questions:

Q1. What is the maximum Ethernet frame size in bytes, that this product will support over a DS3 link?
A1. The maximum Ethernet frame size in bytes for the Ethernet over DS3 is 2016 bytes.

Our Ethernet over DS3 solution supports Jumbo Frames: Our equipment is equipped with a Committed Information Rate controller (CIR) which manages any data overflows through its 100MHz SDRAM controller which interfaces to a 32-bit wide 128 Mbit SDRAM. The SDRAM is used to buffer the data from the Ethernet and WAN ports for transport. It can accommodate up to 8192 frames with a maximum frame size of 2016 bytes to prevent any data overflows, or loss of packates in the event of a data burst.

Q2. Can this product utilize an unframed DS3?
A2  The product provides both unframed DS3 and framed DS3, which is user selectable.

Why we are better:

Our Ethernet over DS3 equipment offers the following necessary features that similar equipment from the other manufacturers do not offer or support......

• We offer the option of Framed DS3 as well as Un-Framed DS3 option. The framing option is user programmable and use may select the DS3 interfaces as Framed DS3 or Un-Framed DS3.
  
  Note: Enabling the Framing option becomes essential when you inter-connect and use the equipment over an Sonet/SDH network. If you connect an Un-Framed DS3 interface of the equipment to a Framed DS3 network interface, the network is likely to show an error on the DS3 interface.

• We offer 4x100BaseT full duplex fast ethernet interfaces in accordance with IEEE802.3, RJ-45.

• We also offer 3x100BaseT full duplex fast ethernet interfaces + 1x100Base-FX full duplex optical ethernet interface accordance with IEEE802.3, (optional).

• Dual -48V DC (1+1) power input options

• Our equipment allows the user to connect to, configure and manage the equipment remotely over a TCP-IP network. Most of  the equipment being offered by the competetion does not offer this feature.

• Our equipent supports efficient handling of data, even during data bursts. Our product design provides a very large buffer data storage capacity to allow for and handle any data bursts very efficiently.

• Supports Jumbo Frames: Our equipment is equipped with a Committed Information Rate controller (CIR) which manages any data overflows through its 100MHz SDRAM controller which interfaces to a 32-bit wide 128 Mbit SDRAM. The SDRAM is used to buffer the data from the Ethernet and WAN ports for transport. It can accommodate up to 8192 frames with a maximum frame size of 2016 bytes to prevent any data overflows, or loss of packates in the event of a data burst.
  
  Flow control is a part of basic ethernet communication protocol and the TCP-IP flow control protocol ensures that an optimum flow control is maintained at all times.
  
  Note # 1: It is essential that the two routers / servers be operating in the same IP domain (subnet), since the Ethernet Over DS3 converter simply interconnects two LANS over a DS3 link. The Ethernet Over DS3 converter does not do any routing function. It simply provides a bridge to inter-connect two LANs over a DS3 link.
  
  Note: The equipment should always be installed and used in pairs - with each unit to be installed at either end of the DS3 link.

Features and Highlights

• Ethernet interface to DS3 44.736 Mbps converter.
• 4x100BaseT full duplex fast ethernet interface in accordance with IEEE802.3, RJ-45.
• 3x100BaseT full duplex fast ethernet interface + 1x100Base-FX full duplex optical ethernet interface accordance with IEEE802.3.
• Framed and un-framed DS3 options available.
• Local and Remote access and monitoring with either RS232 or 10/100BaseT for remote management over TCP-IP network.
• Power Supply: -48V DC or 110V AC power supply options available.
• Dual -48V DC (1+1) power input option.
• Full duplex – Autonegotiation.

Indications and Alarm Monitoring:

• DS3 Loss of Signal
• Loss of DS3 frame (in framed DS3 mode)
• Loss of incoming signal at 100 BaseT Ethernet
• Loss of ethernet packets, errored ethernet packets, over-sized ethernet packets and under-sized ethernet packets log.
• Configuration Error Alarm
• Clock Status
• +3 Volts Power Supply
• -48V DC present
• Configuration Error

Programmable Features:

• Telnet interface for remote programming and monitoring by using CLI text commands
• Easy to use programming using Windows based GUI.

• Status of alarms on DS3 interface.
• Status of alarms on 100BaseT interface.