OOB Output/Initial Exchange/
                                               Waiting Exchange
                                                 .-----.
                                                 |     v
     .------------------.   Initial       .------------------.
     |                  |   Exchange      |                  |
  .->| Unregistered (0) |---------------->|Waiting for OOB(1)|
  |  |   (ephemeral)    |                 |   (ephemeral)    |
  |  |                  |                 |                  |  
  |  '------------------'                 '------------------'
  |                                         |      |      ^
 User Reset                 Completion      |      |      |
  |                         Exchange        |     OOB   OOB
  |<-------.      .-------------------------'    Input  Reject/
  |        |      |                                |    Initial
  |        |      |                                |    Exchange
  |        |      v                                v      |
  |  .------------------.   Completion    .------------------.
  |  |                  |   Exchange      |                  |
  |  |  Registered (4)  |<----------------| OOB Received (2) |
  |  |   (persistent)   |                 |   (ephemeral)    |
  |  |                  |                 |                  |
  |  '------------------'                 '------------------'
  |        |      ^
  |  Mobility/    |
  |  Timeout/   Reconnect
  |  Failure    Exchange
  |        |      |
  |        v      |
  |  .------------------.
  |  |                  |
  '--| Reconnecting (3) |
     |   (persistent)   |
     |                  |
     '------------------'