Section: 4.5.1.7 Forced release during MO MM connection establishment
Content: If the mobile station's CM layer initiated the MM connection establishment but the CM layer wishes to abort the establishment prior to the completion of the establishment phase, the mobile station shall send a CM SERVICE ABORT message any time after the completion of the RR connection and not after the first CM message (e.g. SETUP) is sent. If the first CM message has already been sent, the normal release procedure defined by the appropriate CM protocol applies and the CM SERVICE ABORT shall not be sent. Sending of the CM SERVICE ABORT message is only allowed during the establishment of the first MM connection, where no other MM connection exists in parallel. If parallel MM connections exist already, a new connection establishment cannot be aborted and normal MM connection release according to subclause 4.5.3 applies after MM connection establishment. Upon transmission of the CM SERVICE ABORT message the mobile station shall stop timer T3230 and shall follow the procedures specified in subclause 4.5.3.1. Upon receipt of the CM SERVICE ABORT message the network shall abort ongoing processes, release the appropriate resources, and unless another MM connection establishment is pending or an RRLP procedure (see 3GPP TS 44.031[ None ]  [23b]) or LCS procedure over RRC (see 3GPP TS 25.331[ None ]  [23c]) is ongoing, initiate a normal release of the RR connection.