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Program *42 – Clock Source

Program *42 – Clock Source

Processor Type: DK40i, all RCTUs (Release 4.0 or higher) and BCUs. For Release 3.1 and earlier programming, see below.

 

 

Program Type:

 

System, T1, PRI, BRI

 

 

Initialized Default: Blank

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

✱￿￿

✱￿￿

￿

✱￿￿

✱￿￿

￿

6SNU

✱

￿

￿

+ROG

￿

6SNU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SEL = 1 or 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

- Primary Source

 

 

 

 

 

 

 

2

- Secondary Source

+ROG ￿ 6SNU ￿ ￿ +ROG ￿ 6SNU ￿ ￿ +ROG

Circuit Number

PRIMARY/SECONDARY =

Slot Number of Primary or Secondary PRI Clock

Source (Release 4.0 entry. Not used for release 3.1

Clock Source

Slot Number

Circuit No.

 

 

 

Primary

Secondary

Program *42 Series Overview

This program assigns the T1, PRI or BRI interface RPTU PCB as a Primary or Secondary timing source. The DK is synchronized to the Public Network. If the Primary synchronization is lost, it switches to the secondary timing source.

When a T1 or PRI slot number is assigned, the DK only accepts a “1” for the circuit number. The circuit number is only used for BRI interfaces to specify which circuit is to be used for the Clock Source. If the PCB in this slot is not a T1 or ISDN PCB, the system will not accept data and any entries will be cleared.

BRI interfaces should be used as a clock source only when a T1 or PRI interface is not equipped

Set T1 parameters and assignments with the Program ￿41 (Part 1) and ￿42 (Part 2) series. See the Strata DK Installation and Maintenance Manual for additional T1 information. RDTU/RPTU support is as follows:

Processor

Number of RDTU/

Number of RBUU/

RPTU’s Supported

RBUS’s Supported

 

RCTUA

0

4

 

 

 

RCTUBA/BB

2

8

 

 

 

RCTUC/D

6

14

 

 

 

RCTUE/F

8

20

 

 

 

For proper T1 or ISDN operation, the equipment at each end of a digital T1 span line must be synchronized. The DK is synchronized (as slave) to the equipment on the other end of the digital line by the RDTU/RPTU, RBUU/RBUS PCB designated as the Primary Reference in Program ￿42-1.

If a malfunction occurs and Primary Synchronization is lost, the DK automatically switches modes and synchronizes to the equipment connected to the secondary PCB designated as the Secondary Reference. If the equipment on the other end of the DK digital lines should synchronize to the DK clock source, then enter blanks in Program ￿42-1 and 2. In this case, the DK clock runs free and is considered the Master Synchronization source.

7-16

Strata DK Programming 5/00

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Toshiba dk14, DK40I, DK424I manual Program *42 Clock Source, Program *42 Series Overview
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