ISDN Interfaces

BPTU Interface Unit

BPTU Interface Unit

System:DK424, DK40i, CTX100 & 670

Circuits per PCB: 24 channels per PCB

Interfaces with: ISDN PRI

Older Version(s): none

The BPTU has an RS-232C port to trace data that is transmitted between the CTX system CPU and the BPTU.

T1 Framing: ESF

Line cording: B8ZS

Digital PAD: Transmit side +6dB to -15dB. Receive side +6dB to -15dB (software controlled)

BPTU Installation

Power Factor

BPTUA uses 5V only. 5V power factor = 2.30

To install an BPTU PCB

1.Look for IC19 on the BPTU PCB. If it is on the PCB, move the SW10 jumper to “ROM.” If IC19 is not on this PCB, leave the jumper on the “CPU” setting (see Table 7-1).

2.If you want to run the PCB Self Test, refer to BPTU Self Test.

3.Turn the Strata CTX system power Off.

4.Insert the BPTU (component side facing right) into the appropriate slot and apply firm, even pressure to ensure proper seating of connectors.

Refer to Chapter 2 – Strata CTX Configuration:

“Worksheet 5: Strata CTX100 Cabinet Slots” on page 2-26

...or “Worksheet 6: Strata CTX670 Cabinet Slots” on page 2-37

“ISDN PRI Digital Line PCBs” on page 2-40(mentioned above in slot assignments)

5.After installing the BPTU, gently pull the PCB outward. If the connectors are properly seated, a slight resistance is felt.

6.For cabling information and requirements, refer to “BPTU and RPTU Cabling” on page 7-11.

7-4

Strata CTX I&M 06/04

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Toshiba CTX28 manual Bptu Interface Unit, Bptu Installation, Power Factor, To install an Bptu PCB