Volition??? Networking Mini-Hub

Volition Dual Speed

Mini-Hub VOL-2008

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The VOL-2008, is a compact Dual Speed, stackable Mini-Hub designed for work groups or SOHO (small of???ce/home of???ce) LANs. The

Mini-Hub offers eight dual speed, auto sensing 10/100T/TX ports

and one 100-FX VF-45??? ??? ber port. The VOL-2008 is an unmanaged Hub with an internal switch engine for seamless operation on speed mixing environments. The unit is powered by an internal auto-ranging power supply and is housed in a rugged metal case for greater reliability. In addition, the VOL-2008 can be stacked up to

4 units high via a DB25 100 Mb connection located in the rear of the unit. The VOL-2008 complies with IEEE 802.3 and 802.3u standards.

Speci???cations for VOL-2008

Standard Compliance

IEEE 802.3 10Base-T Ethernet???

IEEE 802.3u 100Base-TX/FX Ethernet

Optical Speci???cations (100-FX, VF-45)

8 10/100 Mbps auto-sensing RJ-45 Ethernet ports with switch agent. Selectable 8th port, as 10/100 Mbps twisted pair, or 100 Mbps ???ber optic Port 8 selection done using a selector switch

???TX-N-twisted pair (normal)

???TX-X-twisted pair (crossed)

???VF-45, 100-FX ???ber

Number of Segments

2 independent segments 10 Mbps and 100 Mbps

LED Display

Number of Hubs per Stack

4 Hubs per stack

Dedicated DB-25 stack ports

Port Partitioning

Automatic partition per port

Port Requirements

90-240 VAC, 50-60 Hz (internal auto-ranging power supply)

Features ??? Benefits

Internal switch agent between 10 Mb and 100 Mb bus

Eight 10/100T/TX auto sensing ports

One 100-FX VF-45 uplink port

Mechanical switch to select 8th port operation (copper or ???ber)

Stackable up to 4 units (DB25 connection)

Internal auto-ranging power supply (85-250 VAC, 50/60 Hz)

CE & FCC Class A Mark

IEEE 802.3 and 802.3u compliance

Speci???cations

Applications

Appendix A ??? Collision Domain

and Distance

In shared fast Ethernet??? , the collision domain limits the operating distance of the network. In any collision domain, the round trip propagation delay must not exceed 512 bit times. Each bit time in fast Ethernet is 10 ns. The following table gives typical delays as speci???ed by the IEEE 802.3 standard.

VOL-2008 Mini-Hub

To calculate other distances for ???ber use the following formula:

Fiber distance (m) - 320 ??? UTP length

(m) x 1.112 (all units in meters). The VOL-2008 Mini-Hub is a Class II repeater. The following diagram illustrates some operating distances on ???ber and copper.

Example 1

Applications

Example 2

Connecting Workstations

The Mini-Hub can be connected to network a variety of devices while maintaining a connection via ???ber to a backbone, workgroup switch and or server.

Computers are connected via copper cabling.

The VOL-2008 may also be stacked to provide higher port density to the work area.

Ordering Information for VOL-2008 Mini-Hub

*For international versions, contact local 3M subsidiary.

VOL-2008 Packing List

VOL-2008 unit

User guide

Stacking cable

AC cord