qBRIDGE-401 Bridge/E1 Inverse multiplexer

qBRIDGE-401 Bridge/E1 Inverse multiplexer
Ethernet over PDH/SDH
qBRIDGE-401 is a high performance and low cost converter/bridge/inverse multiplexer. It’s suitable for
connecting distant LAN segments using standard E1 channels. It provides inverse multiplexing to transmit a
single high-speed data channel over up to four E1 links. qBRIDGE-401 has embedded four port Ethernet switch
and four E1 interfaces and can be used as a standard Ethernet to 4xE1 converter.
Device provides Data rates from 1.92
Mbps to 7.68 Mbps with automatic rate
fallback. Therefore data rate of high speed
channel used to transmit user’s Ethernet
traffic is calculated as Nx1.92 Mbps
where N is a number of available E1
channels.
By
adopting
inversemultiplexing technology, qBRIDGE-401
binds several E1 links to achieve a broadband Ethernet remote bridge, with 8ms tolerance of transfer delay
difference among E1 links. The E1 transmit clock can be derived from the internal oscillator or from one of the E1
receive clocks.
The automatic rate fallback feature ensures that the logical channel used for Ethernet traffic remains open even
if individual E1 links fail, by automatically dropping to the next lower rate. When failed links are recovered,
qBRIDGE-401 automatically returns to the original rate.
qBRIDGE-401 can be ordered either with unmanaged or managed embedded Ethernet switch. Modification
with unmanaged switch is functioning in "Bridge connection" mode and provides IEEE 802.1q VLAN passthrough operation. All configuration for this modification is done using DIP-switches. Modification with managed
embedded Ethernet switch provides enhanced VLAN and QoS support and is configured through console port.
qBRIDGE-401 expands qBRIDGE series of low cost access devices that are suitable for connecting distant
LAN segments using different technologies of data transmission over copper lines. This series is characterized by
easy configuring, high performance and low cost.
The product supports both AC and DC power supply and can be used as a standalone unit in iron enclosures.
19" rack mount brackets are provided.
Technical specifications:
Ethernet interface
· Embedded Ethernet switch
· 2 modifications:
-with managed Ethernet switch
-with unmanaged Ethernet switch
· 4 Ethernet 10/100Base-TX ports
· IEEE 802.3/802.3u/802.3x flow control
· Auto-Negotiation 10/100M; Auto-MDIX
· Half/Full duplex (10/100-20/200M)
· Ethernet to HDLC encapsulation
· Maximum frame length up to 1536 bytes
· Connectors: Shielded 4xRJ-45
Ethernet: "Bridge connection" mode
· Enhanced VLAN and QoS support for model with
managed Ethernet switch
· IEEE 802.1q VLAN pass-through for model with
unmanaged Ethernet switch
· VPN pass-through
· Bridging:
- Transparent MAC Bridging
- Spanning Tree (802.1d)
· 2x1024 МАС table; 4Mbit Frame Buffer
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WAN (4xE1framed)
· Four E1 ports
· ITU-T G.703
· Broadband channel rate of (1..4)х1.92 Mbps full duplex
· Automatic rate fallback
· Transfer delay difference among E1 links up to 8ms
· HDB3 coding; Impedance: 120 Ohm
· Jitter performance: ITU-T G.823
· Receive equalizer gain up to -43 dB
· Clock modes: Internal or Recovered
· Automatic alarm generation
· Remote loopback mode
· Connectors: 4xRJ-45
General
· Configuration: DIP-switches or console
· Various Diagnostic LED Indicators
· Power supply: 100~240VAC/36~72VDC
· Power consumption: 4 W
· Size: 261 x 151 x 45 mm
· Weight : 2,5 Kg
· Temperature: 0 – 45 ºC
· 19" rack mount brackets
NSGate
+7 (495)-984-7673
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