+-----+                 +-----+
          | CCM |                 | NCM |
          +--+--+                 +--+--+
             |     Discovery and     |
             |     Capability        |
             |     Exchange          |
             |<--------------------->|
             |                       |
             |     Setup of          |
             |     User-Plane        |
             |     Protocols         |
             |<--------------------->|
             |                       |
             |     Path Quality      |
             |     Estimation        |
             |<--------------------->|
             |                       |
             | Network Capabilities  |
             | e.g., RNIS [ETSIRNIS] |
             |<----------------------|
             |                       |
             |   Network Policies    |
             |<----------------------|
             +                       +

"RNIS" stands for "Radio Network Information Service"