Black Box ISU2011-4-EURO Manual De Usuario

 

BRI-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. 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 and off using the Term-switch. When 
installing the BRI-Hub, check that both ends of the bus are terminated properly, but only the 
ends! 
 
Depending on the quality of your cables, a maximum length of 150m may be connected to 
every TE-port of the BRI-Hub.  Note that the sum of the cable lengths (NT-BRI-Hub plus 
BRI-Hub-TE) should not exceed 150m. Since the BRI-Hub will normally be placed directly 
next to the NT or the PABX, the entire 150m are available for the TE connection.