Techniques for Emergency Service Fall Back Error Handling

A wireless device comprising:

• an antenna;
• a radio operably coupled to the antenna;
• and
• a processor operably coupled to the radio,
• wherein the wireless device is configured to:
• connect to a first wireless system;
• receive an indication that the first wireless system supports emergency service fallback;
• receive an indication to establish an emergency voice call;
• transmit an emergency service request to the first wireless system;
• determine that an unexpected error has occurred;
• select a second wireless system based on the determination that the unexpected error has occurred;
• and
• connect to the second wireless system to complete the emergency voice call.

A non-volatile computer-readable medium that stores instructions that, when executed, cause the performance of the following actions by a wireless device:

• connecting to a first wireless system;
• receiving an indication that the first wireless system supports emergency service fallback;
• receiving an indication to establish an emergency voice call;
• transmitting an emergency service request to the first wireless system;
• determining that an unexpected error has occurred;
• selecting a second wireless system based on the determination that the unexpected error has occurred;
• and
• connecting to the second wireless system to complete the emergency voice call.