E1 Protocol converter
Product Overview
This series of equipment utilizes large-scale FPGA design and inverse multiplexing technology to bundle multiple E1 circuits for transmitting 4 channels of 100BASE-TX Ethernet data. It enables bidirectional conversion between 1 to 8 E1 channels and optical Ethernet interfaces. The device transmits signals from the E1 channels point-to-point to the optical Ethernet interface, achieving interconnection between E1 channels and the optical Ethernet port.
Unlike conventional remote network bridges, this device supports flexible configuration of 1 to 8 E1 channels. It automatically detects the number of available E1 links and can tolerate a certain transmission delay difference between the individual E1 circuits. The single-line rate is 1984 Kbit/s, with a maximum aggregate bandwidth of 15872 Kbit/s using 8 E1s.
The device provides: 8 E1 interfaces (75-ohm), 4 10/100M Ethernet interfaces, 1 orderwire port (optional), 1 expansion port (optional), and 1 Console port (optional).
Key Features
1. Based on proprietary, self-developed integrated circuits.
2. Enables transparent transmission of Ethernet data over 1 to 8 E1 circuits.
3. Allows remote and local reset operations for both near-end and far-end equipment.
4. Features 100BASE-FX Ethernet interfaces with VLAN protocol support.
5. Built-in dynamic Ethernet MAC address table (4096 entries) with local data frame filtering capability.
6. Single E1 line rate: 1984 Kbit/s; Maximum aggregate bandwidth with 8 E1s: 15872 Kbit/s.
7. The 4 10/100M Ethernet interfaces can be isolated from each other for independent communication.
8. Each Ethernet port supports 10/100M, full/half duplex auto-negotiation, AUTO-MDIX (automatic cable type detection), and allows manual configuration of Ethernet operating modes.
9. Configurable CRC alarm threshold to automatically isolate poorly performing E1 links. Isolation is unidirectional – if the BER exceeds the threshold in one direction of an E1 branch, only that direction is cut off, leaving the opposite direction unaffected. This allows for asymmetric Ethernet transmission paths.
10. Tolerates up to 100ms transmission delay difference among the 8 E1s. The system can automatically cease data transmission on E1 links where the delay exceeds the permissible range.
11. E1 interfaces comply with ITU-T G.703, G.704, and G.823 standards. Signalling timeslots are not supported.
12. E1 interface modules include built-in clock recovery and HDB3 codec circuits.
13. Supports hot-plugging of E1 channels during operation. The device automatically detects valid E1 channels without interrupting ongoing data transmission.
14. Supports flexible configuration for 1 to 8 E1 links. Upon reset, it automatically detects the number of E1s, measures delays, and selects available E1s for use.
Product Specifications
| 8E1 to 4-Port FE Protocol Converter | |
| Product Model | 8E1 to 4FE Protocol Converter (19-inch) Product Specifications |
| Product Functional Description | Implementation of 8E1 to 4-port Ethernet interface conversion, with a bandwidth of 16.384M, auto-adaptation, VLAN support, 19-inch rack-mounted design, and -48V or AC220V power supply (optional). |
| Service Port Description | E1 Interfaces: 8 ports (75Ω/120Ω optional) Ethernet Interfaces: 4 x 10/100Mbps RJ45 ports |
| Power Supply | Dual power input (AC 220V / DC -48V, optional) with redundancy support. |
| Product Dimensions | Dimensions (L x W x H): 485 x 138 x 45 mm (Rack-mountable) |
| Weight | Unit Weight: 1.9 kg |
Product Applications
1. Transmission of various E1 signals.
2. E1-to-Ethernet protocol conversion.
3. Transmission of signals for engineering/emergency telephones.
4. Transmission of industrial control signals.
5. Transmission and control of access control signals.
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ꁇBackbone network
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ꁇMan/private network
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ꁇAccess network
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ꁇCore network
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ꁇSwitches
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ꁇOptical Transceivers
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ꁇNetwork
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ꁇLaser and sensing
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ꁇOptical Fiber Sensing
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ꁇOptical Component
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ꁇFiber Optic Patch Cord
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ꁇOptical Amplifier
