Content disposition system and method for processing message content in a distributed environment

A User Equipment (UE) device comprising:

• a message generator for sending a Session Initiation Protocol (SIP) request message via a first IP network;
• and
• a processor configured to process a SIP response message received from a network node via said first IP network, the SIP response message including at least one message body content and a content type indicator for said at least one message body content;
• and
• the processor further configured for processing instructions to provide a treatment for said at least one message body content based on a value of said content type indicator, independent of at least one of the presence of a content disposition indicator, a content disposition indicator value associated with the content disposition indicator and the presence of a content disposition indicator value, wherein said treatment, provided by said UE device, comprising one of:
• (i) performing an Emergency Services (ES) call effectuated via a circuit-switched network and (ii) performing a registration and an ES call effectuated via an IP network, wherein the registration involves sending a SIP REGISTER message.

A non-transitory, tangible machine readable medium having machine-executable instructions for interpreting contents of one or more message bodies, wherein execution of the machine-executable instruction is for a User Equipment (UE) device to:

• send a Session Initiation Protocol (SIP) request message via a first IP network;
• process a SIP response message received from a network node via said first IP network, the SIP response message being responsive to said SIP request message, the SIP response message including at least one message body content and a content type indicator for said at least one message body content;
• and
• provide a treatment for said at least one message body content based on a value of said content type indicator, independent of at least one of the presence of a content disposition indicator, a content disposition indicator value associated with the content disposition indicator and the presence of a content disposition indicator value, wherein said treatment, provided by said UE device, comprising one of:
• (i) performing an Emergency Services (ES) call effectuated via a circuit-switched network and (ii) performing a registration and an ES call effectuated via an IP network, wherein the registration involves sending a SIP REGISTER message.