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GQ1008N
8E1-to-4-Ethernet Protocol Converter
Keywords
Commercial Switches
Domestic Switches
隐藏域元素占位
Category:
Commercial Switches
Domestic Switches
Product Overview
The protocol converter is designed using a large-scale FPGA and employs reverse multiplexing technology to aggregate multiple E1 circuits for transmitting four 100BASE‑TX Ethernet channels, enabling bidirectional conversion between 1 to 8 E1 channels and Ethernet optical interfaces. This device can transmit E1‑channel signals point‑to‑point to the Ethernet optical interface, thereby interconnecting E1 channels with Ethernet optical interfaces. Unlike conventional remote bridges, it supports flexible configuration of 1 to 8 E1 channels, automatically detects the number of available E1 links, and allows for configurable timing offsets among E1 circuits. The data rate per channel is 1,984 kbit/s, and the aggregate bandwidth of eight channels can reach 15,872 kbit/s.
This device provides: 8 E1 interfaces (75 ohms) and 4 10/100M Ethernet interfaces.
Product Features
1. Achieve transparent transmission of Ethernet data over 1 to 8 E1 circuits.
2. It can perform reset operations on both local and remote devices.
3. Ethernet interface 100BASE-FX, supports VLAN protocol.
4. Built-in dynamic Ethernet MAC address table (4,096 entries) with local frame filtering capability.
5. The data rate of a single E1 line is 1,984 kbit/s, and eight E1 lines can provide a total bandwidth of up to 15,872 kbit/s.
6. The four 10/100M Ethernet interfaces can be isolated from one another, enabling independent communication.
7. Each Ethernet port supports 10/100 Mbps, with full/half-duplex auto‑negotiation and AUTO‑MDIX (automatic crossover detection), and allows for arbitrary configuration of the Ethernet operating mode.
8. The system allows setting a CRC alarm threshold to automatically isolate links with poor transmission quality, with unidirectional disconnection: when the bit error rate on one direction of a 2M tributary exceeds the threshold, only that direction is disconnected, while the other direction remains unaffected; in other words, the two directions of Ethernet transmission can be asymmetric.
9. A transmission delay skew of up to 100 ms is permitted among the eight E1 channels. When this skew exceeds the allowable threshold, the system can automatically cease transmitting data over any E1 channel with excessive delay.
10. The E1 interface complies with ITU-T G.703, G.704, and G.823, and does not support the use of signaling timeslots.
11. The E1 interface module incorporates a built-in clock recovery circuit and an HDB3 codec circuit.
12. During operation, the device supports hot-swapping of E1 channels and automatically detects valid E1 channels, ensuring uninterrupted data transmission.
13. Supports flexible configuration of 1 to 8 E1 channels, automatically detecting the number of E1 links and their latency upon reset, and selecting available E1 channels.
| Interface parameters | |
| E1 interface | Equipment interface: Compliant with Recommendation G.703 Bitrate: 2048 Kb/s ± 50 ppm Code Type: HDB3 Impedance: 75 Ω (unbalanced) or 120 Ω (balanced); the unbalanced connector is BNC, compatible with 75‑2/3 coaxial cable. Jitter Characteristics: Complies with Recommendations G.742 and G.823. Input port attenuation range: 0 to 6 dBm |
| Ethernet interface | Protocol: Compliant with IEEE 802.3 and IEEE 802.1Q (VLAN) Speed: 10/100 Mbps auto-negotiation, full/half-duplex fully adaptive MAC Address Table: Can learn up to 4,096 MAC addresses. Physical interface: RJ45 port, supports Auto-MDIX (auto‑detects crossover or straight‑through cables) |
| Power Supply Characteristics | |
| Input voltage | AC 220V or DC -48V |
| Full-load power consumption | <5W |
| Wiring method | AC 220V: National standard three-pin plug DC-48V: Power supply terminals |
| Overload protection | Support |
| Work environment | |
| Operating temperature | -10～60℃ |
| Storage temperature | -40～85℃ |
| Relative humidity | 5% to 95% (non-condensing) |
| Mechanical Properties | |
| Shell | Metal casing |
| Installation Method | 1U rack-mount installation |
| Size | 138 mm (depth) × 485 mm (width) × 45 mm (height) |
| Warranty | |
| Warranty period | Two years |
Device model | Business Interface | E1 port | Power supply |
GQ1008N-A | 4-way Ethernet | 8 E1 ports | Single power supply AC 220V |
GQ1008N-D | 4-way Ethernet | 8 E1 ports | Single-supply DC-48V |
GQ1008N-AD | 4-way Ethernet | 8 E1 ports | Dual power supply: AC 220V + DC -48V |
| When placing your order, please confirm whether you require an AC 220 V power supply or a DC –48 V power supply. | |||
Application Diagram: E1 Point-to-Point Networking
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