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Thursday, March 1, 2012

CAT5 CABLE AND RJ45 CONNECTOR


How to correctly assemble a CAT-5 cable to RJ45 connectors for regular network cables as well as crossover cables.
The CAT-5 is a standard cable which has four twisted pairs of colours. It is easy to crimp a RJ45 connector to CAT-5 cable and make it into a straight cable or cross the cable as required. To make a straight cable, the ends must be crimped in the same way at each end. When making a crossover cable, some wires of certain colours have to be reversed.

CAT-5 cable is usually divided into 4 twisted pairs of colours:

Orange / orange-white
Green / green-white
Blue / white and blue
Brown / brown-white

Straight Cable Colour Code

To make a straight cable, the tips must be crimped typically the same way ateach end by respecting the twisted pair size.

In general, the colour code used is:

1) orange-white
2) orange
3) green-white
4) Blue
5) blue-white
6) Green
7) brown-white
8) brown

Crossover Cable Colour Code


For a crossover cable, swap 1 with 3, and 2 with 6, in the list above. This gives:

1) green-white
2) green
3) orange and white
4) Blue
5) blue-white
6) orange
7) brown-white
8) brown

Standard EIA / TIA 568 (A &B) Colour Code

Straight cable

1) white-green / white-green
2) green / green
3) white-orange / white-orange
4) Blue / blue
5) white-blue / white-blue
6) Orange / orange
7) white-brown / white-brown
8) brown / brown

Crossover cable 10/100baseT Colour Code


1) white-green / white-orange
2) Green / orange
3) white-orange / white-green
4) Blue / blue
5) white-blue / white-blue
6) Orange / green
7) white-brown / white-brown
8) brown / brown

Complete crossover cable or crossgigabit Colour Code

On Gbic 1000BaseT eg

1) white-green / white-orange
2) Green / orange
3) white-orange / white-green
4) Blue / white-brown
5) white-blue / brown
6) Orange / green
7) white-brown / blue
8) Brown / white-blue

Note:

Many Gigabits (10/100/1000 multi speed) are auto MDI / MDIX and automatically adapt to the type of cable connected.

Saturday, January 28, 2012

RPC ERROR SOLUTION

WHEN ERROR COMING RPC DURING SUBMITTING OF POINT OF SALE ACCOUNT
RUN THIS BELOW QUERY IN QUERY ANALYZER USE TREASURY DATA BASE
After many days of implementation of Meghdoot Enhancement many of our friends facing  problems. So I have decided to post the solutions again.

1) While doing submit accounts ‘Server not configured for RPC’
Solution: Run the following query using query analyzer (replace ‘server’ with your server name):

exec sp_serveroption @server='server', @optname='rpc', @optvalue='true'
go
exec sp_serveroption @server='server', @optname='rpc out', @optvalue='true'
go

Note: The above error is related to SQL Server configuration settings and not related to the application. (RPC is Remote Procedure Call).

Solution for MSDTC Error While Submit Account of Point of Sale in SQL 2008R2



  1. On the Start menu, point to All Programs, point to Microsoft SQL Server 2008 R2, point to Configuration Tools, and then click SQL Server Configuration Manager.
  2. In SQL Server Configuration Manager, click SQL Server Services.
  3. In the details pane, right-click the name of the SQL Server instance for which you want to change the service startup account, and then click Properties.
  4. In the SQL Server Properties dialog box, click the Log On tab, chose Built in Account and select Local System as account type.
  5. After selecting the new service startup account, click OK.
    A message box asks whether you want to restart the SQL Server service.
  6. Click Yes, and then close SQL Server Configuration Manager.