Toshiba CTX28 Benutzerhandbuch
ISDN Interfaces
RBUU/RBUS Interface Unit
7-32
Strata CTX I&M 06/04
Notes
●
PS2 and PS3 are not used with the Strata CTX BRI-U interface PCBs.
●
Check with the BRI circuit supplier to determine the pin out of the demarc jacks because some
jacks may be wired with two or three BRI-U line circuits each jack.
jacks may be wired with two or three BRI-U line circuits each jack.
Station-Side Cabling
•
The ISDN BRI U-interface circuits are two-wire on the Strata CTX station-side.
•
The maximum distance between the Strata CTX ISDN BRI-U, station-side circuit (LT) and the
U-type Terminal Equipment or Terminal Adapter is 18kft.
U-type Terminal Equipment or Terminal Adapter is 18kft.
•
The house wiring from the Strata CTX BRI circuit to the wall jack should be made with CAT3~
CAT5 twisted pair wire.
CAT5 twisted pair wire.
•
•
The flat satin telephone cord that connects from the wall jacks to ISDN terminal equipment
should be no longer than 33 feet.
should be no longer than 33 feet.
•
BRI station-side cables should not be shielded.
•
Polarity of the U interface pair is not critical.
•
The U interface pair should go directly from the Strata CTX interface PCB to the U-type TE1
or TA with no bridge taps or loading coils to different locations.
or TA with no bridge taps or loading coils to different locations.
•
The pin-out of the RBUU/RBUS BRI jack is shown in
:
Call Monitor Jack Cabling
The pin-out for the BRI-U interface call monitor jack is provided in
of this chapter.
Table 7-14
Four-Pair with RJ45 Demarc Jack Coding
Conductor
Color
T56A Pin
T56B Pin
Use
Pair 1
White-Blue
5
5
Line 1
Blue
4
4
Line 1
Pair 2
White-Orange
3
1
Line 2
Orange
6
2
Line 2
Pair3
White-Green
1
3
PS3 plus power
Green
2
6
PS3 minus power
Pair 4
White-Brown
7
7
PS2 plus power
Brown
8
8
PS2 minus power
Table 7-15
Three-Pair with RJ11 Demarc Coding
Conductor
Color
Pin
Use
Pair 1
White-Blue
4
Line 1
Blue
3
Line 1
Pair 2
White-Orange
2
Line 2
Orange
5
Line 2
Pair3
White-Green
1
Line 3
Green
6
Line 3