Bosch 3922 988 43318 User Manual

Bosch Security Systems | 04-2003 | 3922 988 43318 en

Digital Congress Network | Installation  and Operating Manual | Chapter 10 - Installation Techniques

en | 10-13

Computer Based Systems

PC system for 270 PCF 

shows a PC system catering for 270 PCF.   An Audio Media Interface Unit LBB 3508/00 is 

used to extend the system by 90 PCF.  Because the Network card (PC) has no loop-through facility,  a 
trunk splitter LBB 4114/00 is used. 

FIG 10-18 PC Control for a PCF of 270

This page has been left blank intentionally

Rec.

Port 1

Port 2

Line

In

Out

In

Out

Symmetrical

Trunk

115 V-T4A  230 V -T2A

115

V T4A

 

230 V

 

T2A

Output 1

Output 2

Output 3

Output 4

Trunk

Tap-off

PC SYSTEM 
FOR 270 PCF

NOTE: The above example uses the IN-DIRECT method of connecting the PC to the DCN 
trunk-line cabling

LBB 3500/15 or /35 

PCF 

≤

 180 (max.) 

PC 

PC Network Card
LBB 3510/00 

LBB 4114/00 

LBB 4116/xx 

PCF 

≤

 90 (max.) 

LBB 3508/00