USSD Application Message Flow

When we send ANY messages using GCT_Send.Then the other end will receive this message immediatly using GCT_Receive.But it is not happeing if i Send complete set of messages with sample dialog id

MAPDT_OPEN_REQ

MAPST_FWD_SM_REQ

MAPDT_DELIMITER_REQ

Then only GCT_receive funtion is activated at the other end

USSD Application Message Flow 

Message Type                           Mnemonic

Mobile User  à MAPà USSD  Application                  

 MAP_MSG_DLG_IND                 MAPDT_OPEN_IND

Mobile User ß MAP  ß USSD  Application                   

MAP_MSG_DLG_REQ                 MAPDT_OPEN_RSP 

Mobile User  à MAP  à USSD  Application

MAP_MSG_SRV_IND                  MAPST_PRO_UNSTR_SS_REQ_IND

Mobile User ß MAP  ß USSD  Application

MAP_MSG_SRV_REQ                 MAPST_PRO_UNSTR_SS_REQ_RSP

Mobile User  ß MAP  ß USSD  Application

MAP_MSG_SRV_REQ                 MAPST_UNSTR_SS_REQ_REQ

USSD Message

Welcome to XYZ Telecom

Press:

(1) Balance Notification

          (2) Top Up service

Mobile User  à MAP  à USSD  Application

MAP_MSG_SRV_IND                  MAPST_UNSTR_SS_REQ_CNF

Mobile User à MAP  à USSD  Application

MAP_MSG_SRV_IND                 MAPST_UNSTR_SS_REQ_IND

Mobile User replyied by dialing 1

Mobile User  ß MAP  ß USSD  Application

MAP_MSG_SRV_REQ                 MAPST_UNSTR_SS_REQ_RSP

Mobile User  ß MAP  ß USSD  Application

MAP_MSG_SRV_REQ                 MAPST_UNSTR_SS_REQ_REQ

USSD Message

Your current balance is: 5.50

Press:

(1) to Top Up

(2) to end

Mobile User à MAP  à USSD  Application

MAP_MSG_SRV_REQ                MAPST_UNSTR_SS_REQ_RSP

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.

.

.

.

.

Mobile User ßMAPßUSSD Application

MAP_MSG_DLG_REQ                      MAPDT_DELIMITER_REQ

Mobile User à MAP  à USSD  Application

MAP_MSG_DLG_IND                       MAPDT_CLOSE_IND

END OF DIALOG

MAPDT_CLOSE_IND

MAPDT_U_ABORT_IND

MAPDT_P_ABORT_IND

Thanking You

Chandar Kumar V