GQ1002 Interface Converter is a product produced by Guangzhou Guangqiao Communication Equipment Co., Ltd. It has multiple functions, including Ethernet to multiple E1 interface conversion, remote Ethernet bridge, network management function, and rate conversion function. The product features include support for 10/100BASET Ethernet interface, self-learning MAC address learning, high forwarding rate, and large buffer capacity.
The GQ1002 Interface Converter from Guangzhou Light Bridge converts 10/100BASE‑T Ethernet to up to two E1 (1‑2) channels and includes a self‑learning Ethernet bridge with a MAC address table of up to 10,000 entries. It supports both internal and external clock sources and offers configurable Ethernet modes via DIP switches.
The manual contains a product introduction with a parts list and technical specs, an operation guide describing front, rear and bottom panel functions, installation procedures, power‑up testing, and a troubleshooting section with fault diagnosis and typical application examples. This manual is written in Chinese.
| E1 line code rate | 2.048 Mbit/s × N (1–4) ± 50 ppm |
|---|---|
| Ethernet interface | 10/100BASE‑T, auto‑negotiation full/half‑duplex |
| Power supply options | AC 180‑240 V, 50 Hz; DC‑48 V; DC+24 V |
| Operating temperature | 0 °C – 50 °C |
| Dimensions | 230 mm × 143 mm × 49 mm |
| E1 interface impedance | 75 Ω |
| MAC address table size | up to 10,000 entries |
| Maximum forwarding rate | 30,000 frames per second |
Connect an E1 loopback cable to the corresponding E1 input and output ports; if the LED turns off, check the E1 cable and ensure the coaxial cable is wired correctly as described in the troubleshooting section.