Toshiba CTX28 manual Ferrite Core Installation

ISDN Interfaces

BPTU and RPTU Cabling

Ferrite Core

Install the Ferrite core provided with the RPRI cable kit as shown in Figure 7-7. This core is needed to comply with FCC requirements.

ISDN

RPTU

Side View

ISDN PRI Jack

Tie Wrap

CAT5 Shielded Cable

Ferrite Core

FER-CORE-ISDN

One Turn

5963	Note: The Ferrite core must be
	as close as possible to the RPTU.

Interfaces

Figure 7-7 Ferrite Core Installation

Connecting two BPTUs or two RDTU3s

Important Note:

Set SWs on each BPTU per Table 7-3

Strata CTX

BPTU or RDTU3

RJ45 Network Jack

Cross-Pinned, RJ45 Modular Cord

	Pin			Pin
1		T	T		5
		R	R
2					4
		T	T
5					2
		R	R
4					1

Ferrite Core

(655 ft. max. CAT5 wire)

PBX or Cable

BPTU or RDTU3

RJ45 Network Jack

Connector Head

Bottom Side Up

4	5
3	6
2	7
1	8

RJ45 Cable Cross Pinning

		Front	1		T		T	1
			2		R		R	2
				3	R		R	3
				4				4
				5	T		T	5
				6				6
1	8			7				7
			8					8
					Pin 1	of one end to Pin 5 of other end - each direction
					Pin 2	of one end to Pin 4 of other end - each direction

Front

6644

1 8

To make a cross-pinned modular cord on a existing straight through cord:

On one end only, swap Pin 1 with Pin 5 and then Pin 2 with Pin 4.

Figure 7-8 Direct Connect Two BPTU or RPTU2 PCBs for QSIG Networking

Strata CTX I&M 06/04 7-13