SMS Dispatch Manager Table des matières

SMS PDU - Protocol Identifier field

In the SMS PDU, the TP-Protocol-Identifier parameter consists of one octet, and the bits in the octet are used as follows.

The MS will interpret reserved or unsupported values as the value 00000000 but shall store them exactly as received.

The Service Center may reject messages with a TP-Protocol-Identifier containing a reserved value or one which is not supported.

Bit 7 Bit 6 Usage
0 0 Assigns bits 0..5 as defined below
0 1 Assigns bits 0..5 as defined below
1 0 Reserved
1 1 Assigns bits 0..5 for SMSC (Short Message Service Center) specific use
In case where bits 7 and 6 both are 0:
Bit 5 DeSMSC (Short Message Service Center)ription
0 no interworking, but SME-to-SME protocol
1 telematic interworking
In the case of telematic interworking, the following five bit patterns in bits 4..0 are used to indicate types of telematic devices:
Bits 4..0 DeSMSC (Short Message Service Center)ription
00000 implicit - device type is specific to this SMSC (Short Message Service Center), or can be concluded on the basis of the address
00001 telex (or teletex reduced to telex format)
00010 group 3 telefax
00011 group 4 telefax
00100 voice telephone (i.e. conversion to speech)
00101 ERMES (European Radio Messaging System)
00110 National Paging System (known to the SMSC (Short Message Service Center))
00111 Videotex (T.100/T.101)
01000 teletex, carrier unspecified
01001 teletex, in PSPDN
01010 teletex, in CSPDN
01011 teletex, in analog PSTN
01100 teletex, in digital ISDN
01101 UCI (Universal Computer Interface, ETSI DE/PS 3 01-3)
(reserved, 2 combinations)
10000 a message handling facility (known to the SMSC (Short Message Service Center))
10001 any public X.400-based message handling system
10010 Internet Electronic Mail
(reserved, 5 combinations)
values specific to each SMSC (Short Message Service Center), usage based on mutual agreement between the SME and the SMSC (Short Message Service Center) (7 combinations available for each SMSC (Short Message Service Center))
11111 A GSM mobile station. The SMSC (Short Message Service Center) converts the SM from the received TP-DCS to any data coding SMSC (Short Message Service Center)heme supported by that MS (e.g. the default).
If bit 5 has value 1 in an SMS-SUBMIT PDU, it indicates that the SME is a telematic device of a type which is indicated in bits 4..0, and requests the SMSC (Short Message Service Center) to convert the SM into a form suited for that device type. If the destination network is ISDN, the SMSC (Short Message Service Center) must also select the proper service indicators for connecting to a device of that type.

If bit 5 has value 1 in an SMS-DELIVER PDU, it indicates that the SME is a telematic device of a type which is indicated in bits 4..0.

If bit 5 has value 0 in an SMS-DELIVER PDU, the value in bits 4..0 indicates the SM-AL protocol being used between the SME and the MS.

Note that for the straightforward case of simple MS-to-SMSC (Short Message Service Center) short message transfer the Protocol Identifier is set to the value 0.

In the case where bit 7 = 0, bit 6 = 1, bits 5..0 are used as defined below
Bits 5..0 DeSMSC (Short Message Service Center)ription
000000 Short Message Type 0
000001 Replace Short Message Type 1
000010 Replace Short Message Type 2
000011 Replace Short Message Type 3
000100 Replace Short Message Type 4
000101 Replace Short Message Type 5
000110 Replace Short Message Type 6
000111 Replace Short Message Type 7
001000..011110 Reserved
011111 Return Call Message
100000..111100 Reserved
111101 ME Data download
111110 ME De-personalization Short MEssage
111111 SIM Data download