OpenAny method initiates opening of the channel with one of profiles you're offering in Profiles argument. This list is sent to remote side which chooses one of offered profiles. When remote peer receives this list, ChannelOpenRequest event is fired on his side. Once remote peer selects the profile, you will receive ChannelOpen event and you can start exchanging messages.

If you're offering only one profile to be opened for the channel, you can use Open method instead.