Interoperable quality of service pre-negotiation

A system, within a network, the system comprising:

• a storage device to store quality of service classification identifier (QCI) values that correspond to the one or more types of traffic or to one or more forwarding priorities;
• and
• one or more devices to:
• receive traffic from a user device associated with another network,
• obtain, based on receiving the traffic, an interoperable quality of service (QoS) policy,
• The interoperable QoS policy including at least one of:
• one or more OCI values, associated with the network, that correspond to the one or more types of traffic, or
• another one or more QCI values, associated with the other network, that correspond to the one or more types of traffic,
• obtain, from the interoperable QoS policy, a first QCI value, of the other one or more QCI values, that corresponds to a type of traffic, of the one or more types of traffic, received from the user device,
• obtain, from the interoperable QoS policy, a second QCI value, of the one or more QCI values, that corresponds to the first QCI value, and
• process the traffic based on a forwarding priority, of the one or more forwarding priorities, that corresponds to the second QCI value.

A device associated with a network, the device comprising:

• a memory to store a quality of service (QoS) policy,
• the QoS policy including one or more forwarding classifications that correspond to one or more types of traffic;
• and
• one or more processors to:
• receive, from a user device associated with another network, a request to establish a communication session;
• obtain, by the device and based on receiving the request, an interoperable QoS policy,
• the interoperable QoS policy, including:
• a plurality of QoS classification identifier (QCI) values, associated with the other network, that correspond to the one or more types of traffic, and
• a plurality of other QCI values, associated with the Internet protocol multimedia subsystem (IMS) core, that correspond to the one or more types of traffic,
• identify a first QCI value, of the plurality of QCI values, that corresponds to a type of traffic, of the plurality of types of traffic, identified by the request;
• identify a second QCI value, of the plurality of other QCI values, that corresponds to the first QCI value;
• obtain, from the memory, a forwarding classification, of the one or more forwarding classifications, that corresponds to the second QCI value, and
• establish the communication session in a manner that enables the traffic to be processed based on the forwarding classification.