ISDN Interfaces

RBSU/RBSS Interface Units

BSY

TS

LOS

FS

BSY

TS

LOS

FS

RBSU1A

RBSU1

P2

P7

P4

 

 

 

SW7

SW6

SW8

SW9

J2

 

 

 

 

 

 

SW3

TB3

 

 

 

 

SW2

 

 

 

 

 

P6

J1

P5

P3

 

SW4

SW5

 

SW1

 

 

 

 

J3

 

P8

 

 

 

 

 

 

 

 

 

 

PFT

 

 

 

 

contacts

 

 

 

TB1 TB2

RBSU1A - CM V. 1

2789

Figure 7-11 RBSU PCB

P9

 

 

RBSS

 

BSY

 

 

 

 

 

 

 

 

TS

 

 

 

 

LOS

RBSS1A-CMV.

J4

J2

 

FS

 

 

 

J7

 

 

 

 

BSY

 

 

 

 

TS

 

 

 

 

LOS

 

 

 

 

FS

1

 

SW6

SW5

SW2

J6

J3

SW4

SW3

SW1

J5

 

 

F

2788

Figure 7-12 RBSS PCB

ISDN Interfaces

Table 7-8 RBSU/RBSS Option Switches, Jumpers, and Connectors

PCB

Circuit

Option

Type

Circuit Type

Description

Switch

TE

NT

 

 

 

 

 

 

 

 

 

 

All

SW 1

Push-

N/A

N/A

Resets firmware on all circuits of RBSU/RBSS.

 

button

Drops calls off the RBSU/RBSS.

 

 

 

 

 

 

 

 

 

 

 

 

 

1

SW 2

Jumper

X

X

Causes the circuit to operate as TE or NT1.

RBSU

1

SW 3

Slide

On

Off

Switches a 100-ohm resistor in/out of the circuit.

 

 

 

 

 

 

1

SW 4, 5

Jumper

N/A

On

Switches PS-1 in/out of the circuit.

 

 

 

 

 

 

 

 

 

2

SW 6

Jumper

X

X

Causes the circuit to operate as TE or NT1.

 

2

SW 7

Slide

On

Off

Switches a 100-ohm resistor in/out of the circuit.

 

 

 

 

 

 

 

 

2

SW 8, 9

Jumper

N/A

On

Switches PS-1 in/out of the circuit.

 

 

 

 

 

 

 

 

3 (NT only)

SW 1

Slide

On

Off

Switches a 100-ohm resistor in/out of the circuit.

 

 

 

 

 

 

 

RBSS

3 (NT only)

SW 3, 4

Jumper

N/A

On

Switches PS-1 in/out of the circuit.

 

 

 

 

 

 

4 (NT only)

SW 2

Slide

On

Off

Switches a 100-ohm resistor in/out of the circuit.

 

 

 

 

 

 

 

 

 

4 (NT only)

SW 5, 6

Jumper

N/A

On

Switches PS-1 in/out of the circuit.

 

 

 

 

 

 

 

1. Requires programming to set as TE or NT.

Strata CTX I&M 06/04

7-17

Page 283
Image 283
Toshiba CTX28 RBSU/RBSS Option Switches, Jumpers, and Connectors, Circuit Option Type Circuit Type Description Switch