Update on cricket iphone text message problem

[rich hathaway]

ok most of you know about the problems with cricket iphone incomming and outgoing text messaging...

i was approched by the crickets engineering dept. last week to "put our heads together" and try and get a solution for this problem.

i was asked not to be specific with details of names or pesonal info,so i wont.

but have come to the conclusion that it is a problem not with cricket,but with phone its self,and the lack of ability to deal with IA5 encoding (international alphabet) very similar to the default 7 bit gsm alphabet,and also ASCII,and also possible issues with the way the phone is programmed to handle the sms because of the difference in logging for facetime,which uses not only data,but sms also.

i was sent a dump or a trace of a sms sent from a pocketpcs to cricket viphone that shows the proof that what we suspected was in fact true.the phone you will see acknowledges the receiving of the sms,but is unable to deal with the IA5 encoding and then reports, dumps and parses leaving the user not knowing they ever got a message.

also the engineering dept just informed me that cricket to cricket doesn't work if the receiver is an iPhone being served by Sprint. Sprint errors the message saying it is missing a mandatory parameter. Doesn't happen with the android as the receiver.

all messages comming in from intercarriers come to cricket as an IA5 ITU-T T.50 encoded message.which is the common form of encoding



here is a link for more info IA5 encoding
[Only registered and activated users can see links. ]

i will add to this as i find info.
here is the trace from cricket

notice where i underlined the segment showing the sms encoding.

Cricket to Cricket uses 7-bit ASCII. Looks like the iPhone is capable of presenting the ASCII-7 bit encoding scheme and that's why Cricket to Cricket SMS works.


Decoded signal unit THIS IS THE MESSAGE FROM THE SMSC TO THE SWITCH, WHICH GETS DELIVERED TO THE PHONE

# User:
# Date:
# Octets: 118

--------------------------------------------------------------------------------
Octet001 ANSI SS7 Count=000001 Time=
--------------------------------------------------------------------------------
10100011 BIB/BSN (163) 1/35
10000001 FIB/FSN (129) 1/1
..111111 SU type/length (63) MSU63
00...... Spare 0
--------------------------------------------------------------------------------
Octet004 Service information octet
--------------------------------------------------------------------------------
....0011 Service indicator (3) SCCP Signalling Connection Control Part
..01.... Message priority 1
10...... Network indicator (2) N National network
--------------------------------------------------------------------------------
Octet005 Routing label
--------------------------------------------------------------------------------
........ DPC: Net-Clstr-Mbr 00X-XXX-XXX MSC
........ OPC: Net-Clstr-Mbr XXX-XXX-XXX SMSC
01011100 SLS 92
--------------------------------------------------------------------------------
Octet012 Message type
--------------------------------------------------------------------------------
00001001 Message type (9) UDT Unitdata
--------------------------------------------------------------------------------
Octet013 SCCP Protocol Class parameter
--------------------------------------------------------------------------------
....0000 Protocol class (0) Class 0
0000.... Message handling (0) Discard message on error
00000011 Ptr -> Called number 3
00001000 Ptr -> Calling # 8
00001101 Pointer -> Data 13
--------------------------------------------------------------------------------
Octet017 SCCP Called Party Address parameter
--------------------------------------------------------------------------------
00000101 Parameter length 5
.......1 Subsystem # bit (1) SSN present
......1. Sgnl pt code bit (1) SPC present
..0000.. Global title ind (0) No global title included
.1...... Routing bit (1) DPC and SSN based routing
1....... Natl Intnatl bit (1) National address
00000101 Subsystem number (5) MAP Mobile Application Part
........ Point code MSC
--------------------------------------------------------------------------------
Octet023 SCCP Calling Party Address parameter
--------------------------------------------------------------------------------
00000101 Parameter length 5
.......1 Subsystem # bit (1) SSN present
......1. Sgnl pt code bit (1) SPC present
..0000.. Global title ind (0) No global title included
.1...... Routing bit (1) DPC and SSN based routing
1....... Natl Intnatl bit (1) National address
00001011 Subsystem number (11) IS41 IS41D2000
........ Point code SMSC
--------------------------------------------------------------------------------
Octet029 SCCP Data parameter
--------------------------------------------------------------------------------
01011001 Parameter length 89
11100010 Tag (226) QRY W Query with permission, constructor, private use
01010111 Length 87
--------------------------------------------------------------------------------
Octet032 TCAP Transaction ID
--------------------------------------------------------------------------------
...00111 Tag (7) TCAP Transaction ID
110..... Class and form (6) Private use, primitive
00000100 Length 4
........ Originating ID XXXXXXXXXX
--------------------------------------------------------------------------------
Octet038 TCAP Component Sequence
--------------------------------------------------------------------------------
...01000 Tag (8) TCAP Component Sequence
111..... Class and form (7) Private use, constructor
01001111 Length 79
--------------------------------------------------------------------------------
Octet040 Invoke component
--------------------------------------------------------------------------------
...01001 Tag (9) Invoke component
111..... Class and form (7) Private use, constructor
01001101 Length 77
--------------------------------------------------------------------------------
Octet042 TCAP Component ID
--------------------------------------------------------------------------------
...01111 Tag (15) TCAP Component ID
110..... Class and form (6) Private use, primitive
00000001 Length 1
00000000 Invoke ID 00
--------------------------------------------------------------------------------
Octet045 Private TCAP Op Code
--------------------------------------------------------------------------------
...10001 Tag (17) Private TCAP Op Code
110..... Class and form (6) Private use, primitive
00000010 Length 2
.0001001 Operation Family (9) IS-41
0....... Reply Expected 0
00110101 Operation Specifier (53) SMSDelptpt SMS Delivery Point To Point
--------------------------------------------------------------------------------
Octet049 Parameter
--------------------------------------------------------------------------------
...10010 Tag (18) Parameter Set
111..... Class and form (7) Private use, constructor
01000100 Length 68
--------------------------------------------------------------------------------
Octet051 IS-41 SMS_Bearer Data
--------------------------------------------------------------------------------
...11111 Tag (31) Extended tag
100..... Class and form (4) Context-specific, primitive
........ Extended tag (105) IS-41 SMS Bearer Data
00011111 Length 31
--------------------------------------------------------------------------------
Octet054 Message Identifier
--------------------------------------------------------------------------------
00000000 Subparameter Id (0) Message Identifier
00000011 Length 3
0001.... Message type (1) Deliver (mobile-terminated only)
........ Message identifier XXXXXXXX
........ Reserved 0
--------------------------------------------------------------------------------
Octet059 Message Center Time Stamp
--------------------------------------------------------------------------------
00000011 Subparameter Id (3) Message Center Time Stamp
00000110 Length X
00010001 Year XX
00000110 Month XX
00010111 Day XX
00010110 Hours XX
01000011 Minutes XX
01000011 Seconds XX
--------------------------------------------------------------------------------
Octet067 Priority Indicator
--------------------------------------------------------------------------------
00001000 Subparameter Id (8) Priority Indicator
00000001 Length 1
..000000 Reserved 0
00...... Priority (0) Normal
--------------------------------------------------------------------------------
Octet070 User Data
--------------------------------------------------------------------------------
00000001 Subparameter Id (1) User Data
00001101 Length 13
00011... Message encoding (3) IA5 (Table 11 of ITU-T T.50)
........ Number fields 12
........ IA5 Char Tjatjatjatja
........ Reserved 0 0 0
--------------------------------------------------------------------------------
Octet085 IS-41 SMS_Teleservice Identifier
--------------------------------------------------------------------------------
...11111 Tag (31) Extended tag
100..... Class and form (4) Context-specific, primitive
........ Extended tag (116) IS-41 SMS Teleservice Identifier
00000010 Parameter length 2
........ Teleservice ID (4098) CDMA Cellular Messaging Teleservice
--------------------------------------------------------------------------------
Octet090 IS-41 Electronic Serial Number
--------------------------------------------------------------------------------
...01001 Tag (9) IS-41 Electronic Serial Number
100..... Class and form (4) Context-specific, primitive
00000100 Parameter length 4
10000000 Manufacturer's Code XXX
........ Serial Number XXXXXXX
--------------------------------------------------------------------------------
Octet096 IS-41 Mobile Identification Number
--------------------------------------------------------------------------------
...01000 Tag (8) IS-41 Mobile Identification Number
100..... Class and form (4) Context-specific, primitive
00000101 Parameter length 5
........ Digit(s) XXXXXXXXXX
--------------------------------------------------------------------------------
Octet103 IS-41 SMS_Charge Indicator
--------------------------------------------------------------------------------
...11111 Tag (31) Extended tag
100..... Class and form (4) Context-specific, primitive
........ Extended tag (106) IS-41 SMS Charge Indicator
00000001 Parameter length 1
00000010 charge indicator (2) Charge original originator
--------------------------------------------------------------------------------
Octet107 IS-41 SMS_Original Originating Address
--------------------------------------------------------------------------------
...11111 Tag (31) Extended tag
100..... Class and form (4) Context-specific, primitive
........ Extended tag (112) IS-41 SMS Original Originating Address
00001001 Parameter length 9
00000000 Type of digits (0) Not used
.......0 Natl Intnatl bit (0) International
......0. Presentation? (0) Allowed
.....0.. Number (0) Available
....0... Reserved 0
..00.... Provided (0) User provided, not screened
00...... Reserved 0
....0001 Encoding scheme (1) BCD
0010.... Numbering plan (2) Telephony numbering
00001010 Number of digits 10
........ address YYYYYYYYY
--------------------------------------------------------------------------------
Checksum CRC16................ 0000000000000000 hex=0000
--------------------------------------------------------------------------------


Decoded signal unit RESPONSE MESSAGE - THIS IS THE SWITCH TELLING THE SMSC THAT THE MESSAGE WAS DELIVERED.

# User:
# Date:
# Octets: 43

--------------------------------------------------------------------------------
Octet001 ANSI SS7 Count=000001 Time=
--------------------------------------------------------------------------------
11011101 BIB/BSN (221) 1/93
11101111 FIB/FSN (239) 1/111
..101000 SU type/length (40) MSU40
00...... Spare 0
--------------------------------------------------------------------------------
Octet004 Service information octet
--------------------------------------------------------------------------------
....0011 Service indicator (3) SCCP Signalling Connection Control Part
..00.... Message priority 0
10...... Network indicator (2) N National network
--------------------------------------------------------------------------------
Octet005 Routing label
--------------------------------------------------------------------------------
........ DPC: Net-Clstr-Mbr XXX-XXX-XXX SMSC
........ OPC: Net-Clstr-Mbr XXX-XXX-XXX MSC
01010011 SLS 83
--------------------------------------------------------------------------------
Octet012 Message type
--------------------------------------------------------------------------------
00001001 Message type (9) UDT Unitdata
--------------------------------------------------------------------------------
Octet013 SCCP Protocol Class parameter
--------------------------------------------------------------------------------
....0000 Protocol class (0) Class 0
0000.... Message handling (0) Discard message on error
00000011 Ptr -> Called number 3
00000101 Ptr -> Calling # 5
00001010 Pointer -> Data 10
--------------------------------------------------------------------------------
Octet017 SCCP Called Party Address parameter
--------------------------------------------------------------------------------
00000010 Parameter length 2
.......1 Subsystem # bit (1) SSN present
......0. Sgnl pt code bit (0) SPC not present
..0000.. Global title ind (0) No global title included
.1...... Routing bit (1) DPC and SSN based routing
1....... Natl Intnatl bit (1) National address
00001011 Subsystem number (11) IS41 IS41D2000
--------------------------------------------------------------------------------
Octet020 SCCP Calling Party Address parameter
--------------------------------------------------------------------------------
00000101 Parameter length 5
.......1 Subsystem # bit (1) SSN present
......1. Sgnl pt code bit (1) SPC present
..0000.. Global title ind (0) No global title included
.1...... Routing bit (1) DPC and SSN based routing
1....... Natl Intnatl bit (1) National address
00000101 Subsystem number (5) MAP Mobile Application Part
........ Point code XXX-XXX-XXX MSC
--------------------------------------------------------------------------------
Octet026 SCCP Data parameter
--------------------------------------------------------------------------------
00010001 Parameter length 17
11100100 Tag (228) RESP Response, constructor, private use
00001111 Length 15
--------------------------------------------------------------------------------
Octet029 TCAP Transaction ID
--------------------------------------------------------------------------------
...00111 Tag (7) TCAP Transaction ID
110..... Class and form (6) Private use, primitive
00000100 Length 4
........ Responding ID
--------------------------------------------------------------------------------
Octet035 TCAP Component Sequence
--------------------------------------------------------------------------------
...01000 Tag (8) TCAP Component Sequence
111..... Class and form (7) Private use, constructor
00000111 Length 7
--------------------------------------------------------------------------------
Octet037 Return Result component
--------------------------------------------------------------------------------
...01010 Tag (10) Return Result component
111..... Class and form (7) Private use, constructor
00000101 Length 5
--------------------------------------------------------------------------------
Octet039 TCAP Component ID
--------------------------------------------------------------------------------
...01111 Tag (15) TCAP Component ID
110..... Class and form (6) Private use, primitive
00000001 Length 1
00000000 Correlation ID 00
--------------------------------------------------------------------------------
Octet042 Parameter
--------------------------------------------------------------------------------
...10010 Tag (18) Parameter Set
111..... Class and form (7) Private use, constructor
00000000 Length 0
--------------------------------------------------------------------------------
Checksum CRC16................ 0001110100001111 hex=1D0F
--------------------------------------------------------------------------------