6.5.2.5 The H Command

master: `H'

This is used by the master to hang up the connection. The slave will respond with an `H' command response.

`HY'

The slave agrees to hang up the connection. In this case the master sends another `HY' command. In some UUCP packages the slave will then send a third `HY' command. At this point the protocol is shut down, and the final handshake is begun.

`HN'

The slave does not agree to hang up. In this case the master and the slave exchange roles. The next command will be sent by the former slave, which is the new master. The roles may be reversed several times during a single connection.