hi!
I am using ethereal Version 0.10.14-SVN-17749 on linux.
tbcds are not correctly shown in ascii (as isdn tel. numbers), at least in
map payloads; more specifically the tbcd nibbles:
1010 (*), 1011 (#), 1100 (a), 1101 (b) or 1110 (c)
are not correctly "translated" to a textual representation.
pls. have a look at the attached file (pcap exported to txt by
ethereal), where the nibble 1010 (0xA) is "translated" to ":".
now, looking at the ascii representations of ":" and "0":
cco@xxx:~$ ascii ":" 0
ASCII 3/10 is decimal 058, hex 3a, octal 072, bits 00111010: prints as `:'
Official name: Colon
Other names: Double-Dot
ASCII 3/0 is decimal 048, hex 30, octal 060, bits 00110000: prints as `0'
Official name: Digit Zero
it seems that ":" is obtained as a result of the following operation:
"0" + 0xA
this may give a clue on what actually happens during the decoding.
on a more general level, what should be the textual (ascii) representation
of the nibbles 1010-1110:
- *, #, a, b, c (which seem to be some ISDN/dtmf codes??)
- A, B, C, D, E (the actual hex digit representation of the nibbles
in the tbcd above)
bye now!
cristian
GSM Mobile Application
Component: returnResultLast (2)
returnResultLast
invokeID: 1
resultretres
opCode: localValue (0)
imsi: 2704F0
Imsi digits: 72400
extendedRoutingInfo: routingInfo (0)
routingInfo: roamingNumber (0)
roamingNumber: A19A999978563412
1... .... = Extension: No Extension
.010 .... = Nature of number: National Significant Number (0x02)
.... 0001 = Number plan: ISDN/Telephony Numbering (Rec ITU-T E.164) (0x01)
ISDN Address digits: :9999987654321
