Circuit switched fallback failure handling in wireless communication networks

A wireless communication system, where a wireless communication device is initially configured to use circuit switch fallback (CSFB) services over a first wireless communication network, the wireless communication system comprising:

• a control node configured to detect CSFB failure by at least monitoring performance of a CSBF link between the first wireless communication network and a second wireless communication network that routes voice call signaling over the CSBF link for at least the wireless communication device;
• responsive to the CSFB failure, the control node configured to inform at least the wireless communication device of the CSFB failure, inform a home location register (HLR) in the second wireless communication network of the CSFB failure, and inform the HLR to process incoming voice calls with a treatment service having a voicemail timeout delay;
• and
• responsive to the CSFB failure, the wireless communication network configured to route further voice call signaling for the wireless communication device using the second wireless communication network instead of the CSFB link.