+ MESSAGE_BCHANNEL, /* request/assign/remove bchannel */
+ MESSAGE_HELLO, /* hello message for remote application */
+ MESSAGE_NEWREF, /* special message to create and inform ref */
+ MESSAGE_BRIDGE, /* control port bridge */
+ MESSAGE_TRAFFIC, /* exchange bchannel traffic */
+ MESSAGE_3PTY, /* 3PTY call invoke */
+ MESSAGE_TRANSFER, /* call transfer invoke */
+ MESSAGE_DISABLE_DEJITTER,/* tell (mISDN) port not to dejitter */
+ MESSAGE_UPDATEBRIDGE, /* tell join to update bridge. (sent by mISDN port) */
+ MESSAGE_VOOTP, /* enable/disable VoOTP */
+ MESSAGE_DOV_INDICATION, /* data over voice message received */
+ MESSAGE_DOV_REQUEST, /* sending data over voice message */
+ MESSAGE_DOV_LISTEN, /* listen order to data over voice message */