Local call service control function server selection

A non-transitory computer-readable medium storing a set of processor-executable instructions, which, when executed by one or more processors of a server selection device, cause the server selection device to:

• receive a registration request from a user device;
• determine, based on receiving the registration request, whether the user device is associated with a call service control function (CSCF) server device;
• when it is determined that the user device is not associated with the CSCF server device, output the registration request to a particular local CSCF server device to cause the particular local CSCF server device to register the user device,
• the particular local CSCF server device being associated with a service area in which the user device is located;
• when it is determined that the user device is associated with the CSCF server device, determine whether the CSCF server device is a local CSCF server device;
• when it is determined that the CSCF server device is a local CSCF server device, output the registration request to the CSCF server device;
• and
• when it is determined that the CSCF server is not a local CSCF server device, outputting a non-preferred server indication to the CSCF server device to cause the CSCF server device to be disassociated with the user device.

A method, comprising:

• receiving, by a server selection device, a registration request from a user device;
• determining, by the server selection device and based on receiving the registration request, whether the user device is associated with a call service control function (CSCF) server device;
• when it is determined that the user device is not associated with the CSCF server device, outputting, by the server selection device, the registration request to a particular local CSCF server device to cause the particular local CSCF server device to register the user device,
• the particular local CSCF server device being associated with a service area in which the user device is located;
• when it is determined that the user device is associated with the CSCF server device, determining, by the server selection device, whether the CSCF server device is a local CSCF server device;
• when it is determined that the CSCF server device is a local CSCF server device, outputting, by the server selection device, the registration request to the CSCF server device;
• and
• when it is determined that the CSCF server is not a local CSCF server device, outputting, by the server selection device, a non-preferred server indication to the CSCF server device to cause the CSCF server device to be disassociated with the user device.