http://www.nmscommunications.com/manuals/6464-22/default.htm
http://www.protocols.com/pbook/ss7.htm
http://www.linkbit.com/uiplus/
Wednesday, June 10, 2009
ANSI to ITUT Point Code Converstion Schematic
Generally, there are two standards for Point Code - ITU 14 bits (3-8-3) and ANSI 24 bits (8-8-8). For each of the two standards, Point Code can be presented in three formats: decimal, binary, and hex. Google had pointed me to telecomdesk.com that provides a convenient web-based tool for format conversion.
However, what I actually need to do was: convert an ANSI Point Code (8-8-8) into ITU Point Code (3-8-3). For example, let say the given ANSI PC was 8-2-10, how am I going to find out the value in ITU standard? I had searched the Internet for quite some time but just cannot find a clue. Eventually, I came to the following idea:
1) 8-2-14 ==> 00001000 00000010 000011102) Take the 4 right-msb for each segment ==> 1000 0010 11103) Group the bits together and pad with two 0s ==> 001000001011104) Arrange those bits into 3-8-3 format ==> 001 00000101 1105) 001 00000101 010 ==> 1-5-6
Result: 1-5-6
However, what I actually need to do was: convert an ANSI Point Code (8-8-8) into ITU Point Code (3-8-3). For example, let say the given ANSI PC was 8-2-10, how am I going to find out the value in ITU standard? I had searched the Internet for quite some time but just cannot find a clue. Eventually, I came to the following idea:
1) 8-2-14 ==> 00001000 00000010 000011102) Take the 4 right-msb for each segment ==> 1000 0010 11103) Group the bits together and pad with two 0s ==> 001000001011104) Arrange those bits into 3-8-3 format ==> 001 00000101 1105) 001 00000101 010 ==> 1-5-6
Result: 1-5-6
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