Take for example this following PDU:
011000 8 91 87654321 00 00 FF 19 54747A0E4ACF4161903C4C4797E520F6DB7D06CDDB73
Length = 22 + 1 = 23(dec) = 17(Hex)
0011000 8 81 87654321 00 00 FF 19 54747A0E4ACF4161903C4C4797E520F6DB7D06CDDB73
Length = 19(hex) = 25(dec)???
How do you derive that the length of the PDU is 25 by calculating the user data length? I calculated that the length is 22 + 1 for 7-bit data but still ist only 23.
Can anyone advise me on the solution? Thanks
2006-07-03 05:36:37 · 2 answers · asked by Niversphere 1 in Computers & Internet ➔ Software
I solved it.
When using the 7-bit data coding scheme, the user data length is the amount of characters(septets) and not the amount of octets.
2006-07-03 06:17:12 · update #1
I was calculating the number of octets, which is why the hex digits dont tally.
2006-07-03 06:17:54 · update #2
PDU is Protocol Description Unit in this scenario and not PDU in TCP/IP
2006-07-03 06:19:05 · update #3
Check this article:
http://www.codeproject.com/vb/net/PDUEncoder.asp.
Luck.
2006-07-03 06:39:46 · answer #1 · answered by Nahuel 2 · 0⤊ 0⤋
Protocol Data Unit:
A protocol's control data (protocol fields) with the carried data
How did you calculate those numbers?
2006-07-03 12:55:39 · answer #2 · answered by iyiogrenci 6 · 0⤊ 0⤋