Default bearer use for multimedia sessions in wireless communication networks

A wireless communication network to maintain multimedia sessions in response to bearer failure, the wireless communication network comprising:

• Call Session Control Function (CSCF) circuitry that:
• requests a dedicated bearer to serve a requested multimedia session in response to a multimedia session request for a user device received over a default bearer;
• receives an error message that comprises an error code indicating the dedicated bearer could not be established;
• determines a session type for the requested multimedia session and an error type for the error code;
• determines the default bearer can support the requested multimedia session based on the session type and the error type;
• maintains the default bearer for the user device and establishes the requested multimedia session over the default bearer when the default bearer can support the requested multimedia session.

One or more non-transitory computer-readable storage media having program instructions stored thereon to maintain multimedia sessions in response to bearer failure, wherein the program instructions, when executed by a computing system, direct the computing system to perform operations, the operations comprising:

• in response to a multimedia session request for a user device received over a default bearer, requesting a dedicated bearer to serve the requested multimedia session;
• receiving an error message that comprises an error code indicating the dedicated bearer could not be established;
• determining a session type for the requested multimedia session and an error type for the error code;
• determining the default bearer can support the requested multimedia session based on the session type and the error type;
• in response to determining the default bearer can support the requested multimedia session, maintaining the default bearer for the user device and establishing the requested multimedia session over the default bearer.