Toshiba CTX28 manual Monitor Jack, CKT1 CKT3

ISDN Interfaces

RBSU/RBSS Interface Units

	RBSU
	BSY	RBSS
		BSY
CKT2	TS		CKT4
		TS
	LOS
	FS	LOS
		FS
	BSY	BSY
CKT1		TS	CKT3
	TS
		LOS
	LOS	FS
	FS
		4th Circuit
RJ-45 8-pin (shielded)		2nd Circuit
Modular Connector
		3rd Circuit
TB3 (FG)
		1st Circuit
Reset Switch
(resets RBSU Firmware)
RS-232C Connector
for Call-Data Monitor
		TB1 and TB2 (PFT)
	2795

Figure 7-14 RBSU/RBSS Location of LEDs and Connector Locations

Table 7-10 RJ45 Pins in the 8-pin Modular Jack

Pin	TE	NT	PS1/R40S
No.	Side	Side	Polarity

1	N/C	N/C	N/C
2	N/C	N/C	N/C
3	Tx	Rx	+
4	Rx	Tx	+
5	Rx	Tx	-		87654321	3048
6	Tx	Rx	-
7	N/C	N/C	N/C	Front View of RJ-45 Jack Cavity
				Note: The RJ-45 pins are numbered as shown above.
8	N/C	N/C	N/C

Monitor Jack

The RBSU/RBSS monitor jack is an RJ12 (6-pin modular). This jack provides an RS-232 output that enables you to monitor the RBSU/RBSS BRI circuit D-channel, layer-2 and layer-3 data. The monitor jack pin configuration and communication parameters are the same as BPTU or RPTU and RBUU (see Figures 7-32, 7-35and 7-36). For RBSU monitor jacks, see Figure 7-34and Figure 7-14 on page 7-20.)

7-20 Strata CTX I&M 06/04