3GPP TSG-T2#4 / ETSI SMG4
Miami, US, 14-16 June 1999	TSGT2#4(99)469	

Agenda Item:	

Source:	Nokia

Title:		Additional comments to T2-99461 CR to 03.38 on Data Coding Scheme for WAP over USSD

Document for:	Information

___________________________________________________________________________

Hi Kevin,

 If SMG4 were to approve the change request to GSM03.38
 to specify a WAP specific range of DCS values, the text
 below will be added to the WAP over GSM USSD WAP Forum
 specification. The absolutely minimum requirement is,
 as you say, only a single value to be reserved in the
 GSM03.38 specification. However, it could be that the
 WAP stack is implemented in the TE or SIM instead of
 the ME, so other Message Class values have been allowed
 accordingly.

 ** New approved text to the WAP specification -->

 WAP uses the DCS value 1110 xxxx. The bits 3..0 are
 used in the following way:

 Bit 1 Bit 0 Message Class:
 0      0      No message class.
 0      1      Class 1 Default meaning: ME-specific.
 1      0      Class 2 SIM specific message.
 1      1      Class 3 Default meaning: TE-specific.

 Bit 3 Bit 2      Message Coding:
 0      0            Reserved
 0      1            8 bit data
 1      0            Reserved
 1      1            Reserved

 --> New approved text to the WAP specification **

 There are currently 7 free coding groups in the DCS
 table in the 03.38, so taking one of them into use
 to avoid conlicts in interpreting the message
 structures would perhaps not be a big problem.

 Please forward this mail to any other list if needed.

 Thank you.
 Regards,
 Teemu Tarnanen
 Nokia Telecommunications