Toshiba CTX28 manual RBSU/RBSS Passive Bus Configurations, Simplified Short-branched Passive Bus

ISDN Interfaces

RBSU/RBSS Interface Units

RBSU/RBSS Passive Bus Configurations

The placement of S-type TE and TA devices on the BRI S-passive bus is critical for good RBSU/ RBSS BRI circuit performance. Figures 7-19~7-22show four passive bus architectures that are known to work. In all installations, follow the guidelines of any of these passive-bus models using the wire, cables, and jacks described in the previous paragraphs.

RBSU/RBSS

NT-Mode

TR

RJ45

5435

TA and PC Com Port

max 360'

360' max

ISDN Telephone

Figure 7-19 Simplified Short-branched Passive Bus

RBSU/RBSS

NT-Mode

TR

5436

850'

RJ45

RJ45 with

TRs

TE-1 PC Card

*

* No more than 130' difference between any 2 branches.

*

ISDN Telephone

Figure 7-20 Branched Passive Bus

RBSU/RBSS

NT-Mode

TR

82'

ISDN Telephone

RJ45

TE-1 PC Card

TR

5437

1650'

Figure 7-21 Extended Passive Bus

7-26 Strata CTX I&M 06/04