Question: How does the Mobile Station (MS) determine if the extended protocol configuration options are supported by the network and the MS end-to-end for a PDN connection?
Option 1: The MS checks if the GGSN has included the extended protocol configuration options IE in at least one session management message received by the MS for this PDN connection, regardless of the PDP Type.
Option 2: The MS checks if the network has indicated support of the extended protocol configuration options IE in the last ATTACH ACCEPT or ROUTING AREA UPDATING ACCEPT message, and the PDP Type requested for the default PDP context is IP.
Option 3: The MS checks if the network has indicated support of the extended protocol configuration options IE in the last ATTACH ACCEPT or ROUTING AREA UPDATING ACCEPT message, and either the PDP Type requested for the default PDP context is non-IP, or the network has included the extended protocol configuration options IE in at least one session management message received by the MS for this PDN connection.
Option 4: The MS checks if the SGSN has indicated support of the extended protocol configuration options IE in the last ATTACH REQUEST or ROUTING AREA UPDATING REQUEST message, regardless of the PDP Type.
Explanation: According to the text, for the MS, the extended protocol configuration options is supported by the network and the MS end-to-end for a PDN connection if the network has indicated support of the extended protocol configuration options IE in the last ATTACH ACCEPT or ROUTING AREA UPDATING ACCEPT message, and either the PDP Type requested for the default PDP context is non-IP, or the network has included the extended protocol configuration options IE in at least one session management message received by the MS for this PDN connection.