4-Port BRI-Hub (UK): ISU2011-4-UK 4-Port BRI-Hub (Euro): ISU2011-4-EURO 8-Port BRI-Hub (UK): ISU2011-8-UK 8-Port BRI-Hub (Euro): ISU2011-8-EURO BRI-Hub TECHNICAL: SALES: FAX: ADDRESS: WEB: (0118) 965 6000 (0118) 965 5100 (0118) 965 5001 464 Basingstoke Road, Reading, Berkshire RG2 0QN www.blackbox.co.
BRI-Hub How To Contact your Local Black Box Italy: Australia: Black Box Italia S.P.A Tel: 0227400280 Fax: 0227400219 Web Site: www.blackbox.it Black Box Catalog Australia PTY LTD Tel: 0398797100 Fax: 0398702955 Deutschland: Brazil: Black Box Deutschland Tel: 0811/5541-0 Fax: 0811/5541-499 Web Site: www.blackbox-deutschland.com Black Box Do Brasil. Tel: (011) 5515-4000 Fax: (011) 5515-4002 Web Site: www.blackbox.com.
BRI-Hub Contents Introduction ............................................................................................................................... 4 Description of functions ................................................................................................ 4 Options. ......................................................................................................................... 5 BRI-Hub ......................................................................................
BRI-Hub Introduction Within the data communications and LAN industry it is well known that a structured cabling concept using a star topology has significant advantages, such easier maintenance, unproblematic changes in the configuration and faster fault finding. Last but not least, a structured cabling concept may be used for all kinds of LAN-, WAN and telecommunications technologies.
BRI-Hub If a BRI needs to be made available in several rooms, it used to be necessary to install a bus from the server room through all rooms. (See picture ‘old’). Now star wiring can be used with BRI-Hub, which comes to use also for telephone and local area networks (see picture 'with BRI-Hub'). Options BRI-Hub This option derives its power from the power supply provided.
BRI-Hub Technical Specifications SO Interface BRI Number of interfaces……………………………………5 for BRI-Hub-4, 9 for BRI-Hub -8 Type and coding…………………………………………I.430, Mod. AMI, 4-wire Frame structure………………………………………….I.430 (48 Bits per 250 µs) Transmission rate………………………………………..192 kbps +/- 50 ppm Interface connector………………………………………RJ-45 Common Features Size (W x H x D)………………………………………..205 x 40 x 110 mm Weight…………………………………………………..450g Housing material……………………………………….. ABS Protection class………………………………………….
BRI-Hub Environmental and Safety Notes The device conforms to all european and international standards for safety, environment, EMC and the ISDN basic rate interface. Power Supply • The power adaptor is according to safety class II (VDE 0551) and my only be used indoor. • Do not use the power adaptor when it was brought from a cold to a warm environment. In that case condensing water may damage the unit. • There are no user serviceable part inside the power adaptor.
BRI-Hub Installation For proper operation the device must be placed in a suitable location. It should be a clean and dry environment without direct sun light. Sufficient cooling must be possible. Do not pack or cover the unit or set other warm equipment on top of it. Tabletop Just place the unit on a clean and dry place. Multiple BRI-Hub units may be stacked. The rubber stands give enough space for proper cooling.
BRI-Hub • The screws must be put into the holes of the BRI-Hub. The screws slide approximately 25 mm into the case. • The screws can be screwed in tight. Power Supply BRI-Hub The standard BRI-Hub is supplied with a wall mount power adapter. There is no power switch at the device. The BRI-Hub is active when the power adaptor is plugged into an outlet and the DC connector of the power adaptor is connected to the BRI-Hub.
BRI-Hub Connecting the Hub 6V DC CE The DC connector of the power adapter is inserted into the jack on the left side of the rear panel (Jack "6V DC"). Do not use other power adaptors than the original one. In any case notice the polarity of the connector. Inner tip +, outer ring -. To connect the BRI-Hub to the NT or an internal BRI of a PABX, use one of the connectors labelled 'NT'. Use the enclosed ISDN-cable. Both connectors are parallel connected, so it doesn't matter which one you chose.
BRI-Hub The TE-ports termination resistors are permanently active and cannot be switched off. Please install terminating resistors to the end of the connecting cables. In the above example the Term-switch must be in the off position, i.e. termination resistors are off. This is because the BRI-Hub is not connected to the end of the bus. Power Failure Operation If the BRI-Hub loses power, the terminal devices directly connected to the NT ports will still operate.
BRI-Hub Configuration for power fail communication with the BRI-Hub If cable connections between the BRI-Hub and the terminal equipment (TE) are longer than the proposed 150m, operation may be possible under specific conditions: 1. The NT must be switched to "extended passive bus". "Point-to-point" or "adaptive timing”. 2. All cable connections at the TE ports must have the same range of length, i.e. +/- 50 to 100m, depending on the cable quality.
BRI-Hub Termination Resistors The signal pairs must be terminated with 100Ω resistors at both ends of the bus. These must be installed as shown below. If not placed correctly, they may short the power feeding voltage.
BRI-Hub Operation No service is needed during operation. Cable shorts at one TE port only affect the power feeding voltage of all ports if they are internally connected. To reduce this effect self-healing fuses are connected to each port. The current version of the BRI-Hub cannot clear problems with cable reversals of the TE pair (Pins 3 and 6 of the RJ-45). If one of the connected TEs has such a pair reversal, no operation is possible since the pulses sent by different TEs have different polarity.
BRI-Hub Troubleshooting Fault Pwr-LED is off Problem BRI-Hub is powered off No mains power Faulty power adaptor For BRI-HUB-S only: loss of power inside NT or PABX BRI-Hub is faulty Specific devices on a port do not operate via the BRI Only devices at port 1 may communicate Cable shorts How to clear the problem Plug in power adaptor Check for main power Use other compatible power adaptor. Check polarity! Use original power adapter Please return the device to your dealer. Use another port for test.
BRI-Hub Notes 16 SALES: 0118 965 5100
