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15 

BRI-Hub

TECHNICAL: 0118 931 2233 

Troubleshooting 

 

Fault 

Problem 

How to clear the problem 

Pwr-LED is off 

BRI-Hub is powered off  Plug in power adaptor 

 

No mains power 

Check for main power  

 

Faulty power adaptor 

Use other 

compatible

 power adaptor. Check 

polarity! 

 

For BRI-HUB-S only: 
loss of power inside NT 
or PABX 

Use original power adapter 

 

BRI-Hub is faulty 
 

Please return the device to your dealer. 

Specific devices 
on a port do not 
operate via the 
BRI 

Cable shorts 

Use another port for test. 
 
Check for cabling faults. 

 Faulty 

terminal 

equipment 

Check with other equipment 

 

Cable too long 

Connect TE directly to the BRI-Hub for test 

Only devices at 
port 1 may 
communicate 

A BRI-HUB is used 
which is in the power 
down mode 

Power on the BRI-HUB  

 
 
If you are still having problems with you BRI-Hub, please call Black Box technical Support. 
 

Summary of Contents for ISU2011-4-EURO

Page 1: ...0118 965 6000 0118 965 5100 0118 965 5001 464 Basingstoke Road Reading Berkshire RG2 0QN www blackbox co uk 4 Port BRI Hub UK ISU2011 4 UK 4 Port BRI Hub Euro ISU2011 4 EURO 8 Port BRI Hub UK ISU2011...

Page 2: ...348 Web Site www black box ch Web Site www blackbox com Netherlands Mexico Black Box Datacom BV Black Box De Mexico S A de C V Tel 03032417799 Tel 05 420 0100 Fax 0302414746 Fax 05 420 0123 Web Site w...

Page 3: ...Common Features 6 Power supply 6 Power Supply 7 Sound Emission 7 S0 Interface 6 Parts List 7 Installation 8 Tabletop 8 Wall mount 8 Rack Mount 8 Power Supply 9 BRI Hub 9 BRI Hub S 9 Connecting the Hub...

Page 4: ...b it is now possible to use the structured star cabling concept for ISDN In addition the distance between the NT and the TEs may be extended because of the use of point to point links between the BRI...

Page 5: ...a networks see picture with BRI Hub Options BRI Hub This option derives its power from the power supply provided BRI Hub S This option derives power from the S Bus and uses an internal DC DC converter...

Page 6: ...5 x 40 x 110 mm Weight 450g Housing material ABS Protection class IP 21 Environmental temperature 0 to 40 C Storage temperature 20 to 70 C Humidity max 90 non condens Supply voltage 6 9V Power consump...

Page 7: ...re no user serviceable part inside the power adaptor Therefore it is not necessary to open the unit Sound Emission The unit does not emit any sound Parts List When opening your BRI Hub the following p...

Page 8: ...7 mm still left between wall and screw head Now place the BRI Hub so that the screws fit into the holes in the floor plate The power LED is in the upper right corner Carefully shift the BRI Hub downwa...

Page 9: ...ides the operation with a power adaptor it is possible for a BRI Hub 8S or BRI Hub 4S to get its power through the power feeding of the NT or PABX via the NT port Please note that the BRI Hub needs ap...

Page 10: ...t doesn t matter which one you chose The second connector may be used to connect a test device or other TEs see Power Failure Operation on next the page Termination of the NT port may be switched on a...

Page 11: ...he terminal devices directly connected to the NT ports will still operate For this to happen case one must observe the maximum cable length and the position of the terminating resistors In more detail...

Page 12: ...I 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 t...

Page 13: ...al pairs must be terminated with 100 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 100 each Pin Pin descript...

Page 14: ...versal no operation is possible since the pulses sent by different TEs have different polarity Displays and Controls Displays Pwr is on green when the BRI Hub is operating I e the power supply is acti...

Page 15: ...original power adapter BRI Hub is faulty Please return the device to your dealer Specific devices on a port do not operate via the BRI Cable shorts Use another port for test Check for cabling faults...

Page 16: ...16 BRI Hub SALES 0118 965 5100 Notes...

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