NSGate. qBRIDGE-102 / qBRIDGE-103. Ethernet to E2/E3 Converters

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qBRIDGE-102 / qBRIDGE-103. Ethernet to E2/E3 Converter

Brief | Manual

qBRIDGE-102 and qBRIDGE-103 are high performance converters/bridges that can be used for connection of remote segments of 10/100Base-TX Ethernet networks over standard G.703 (E2 unframed and E3 unframed) channels (SDH or PDH network). qBRIDGE-102/103 enables connection of two LANs through a unframed G.703 stream with fixed 8448 Kbps for qBRIDGE-102 and 34368 Kbps for qBRIDGE-103 throughput. Embedded ASIC-based hardware bridge offers very high reliability and performance. ASIC-based architecture allows eliminating performance problem (especially when there is a large amount of short Ethernet frames to transfer over G.703 interface). Peak device performance is 90000 frames per second that is more than enough for any type Ethernet traffic processing.

The converter is also useful for connecting remote LAN segments through copper line with maximum reach up to 400m (two ATT 734A 75Ohm coaxial cables).

"Bridge connection" mode converter is transparent for Ethernet frames with VLAN tag and for VPN packets. It has one Ethernet 10/100Base-TX port with Auto-Negotiation and Auto-MDIX capability and one G.703 8448 Kbps (qBRIDGE-102) or one G.703 34368 Kbps (qBRIDGE-103) port. User can easily configure qBRIDGE-102/103 with no additional equipment (terminal emulation program and so on). DIP-switches are used to control all qBRIDGE-102/103 functions. The device has selectable frame buffer configuration, configurable LAN Filtering mode, IEEE 802.3x flow control. Additional feature of qBRIDGE-102/103 is Link-Loss forwarding i.e. capability to switch off Ethernet port in case of E2/E3 interface failure. This feature is user to report WAN failure to equipment connected to qBRIDGE from Ethernet side. For G.703 E2/E3 interface it is also possible to setup transmit clock source (internal or recovered). For diagnostic purposes and troubleshooting qBRIDGE-102/103 provides remote loopback mode, LED indicators and some additional features.
The product is available with external AC or DC power adapter as a standalone unit in compact small-size plastic case.

Technical specifications:

Ethernet Interface
	One Ethernet port 10/100Base-TX
	IEEE 802.3/ 3u/ 3x flow control
	Auto-Negotiation 10/100M
	Auto-MDIX
	Half/Full duplex (10/100-20/200Mbps)
	Ethernet to HDLC encapsulation
	Frame length up to 1536 bytes
	Connector: Shielded RJ-45
Ethernet: "Bridge connection" mode
	IEEE 802.1D transparent learning bridge
	MAC Table: 256 MAC address
	IEEE 802.1q VLAN pass-through
	Filtering and Forwarding: 90,000 pps
	Frame Buffer: 340 frames
G.703 Interface (E1 Unframed)
	Interface: ITU-T G.703; One G.703 port
	Data rate qBRIDGE-102: 8448 Kbps
	Data rate qBRIDGE-103: 34368 Kbps
	HDB3 coding; Impedance: 75 Ohm
	Jitter: ITU-T G.823, JT-G.703
	Maximum cable attenuation qBRIDGE-103 - 14dB (17184 kHz) qBRIDGE-102 – 6.8dB (4224 kHz)
	Clock modes: Internal or Recovered
	Link-Loss Forwarding, Remote loopback
	Connectors: 2xBNC
General
	Configuration: DIP-switches
	Various Diagnostic LED Indicators
	Power supply: 100~240VAC/36~72VDC
	Power consumption: 1.5 W
	Size: 80 x 135 x 27 mm
	Weight: 0,3 Kg

Figure 1. Connection of remote LANs over G.703 channel

Order Information

Model	P/N	Power Adapter	Implementation
qBRIDGE-102	36BEU102	100~240V AC	Standalone unit
qBRIDGE-102-DC	36BED102	36~72V DC	Standalone unit
qBRIDGE-103	36BEU103	100~240V AC	Standalone unit
qBRIDGE-103-DC	36BED103	36~72V DC	Standalone unit