static int DoHold() { // Example cmd line: hold [email protected] OpalMessageRef command = new OpalMessageRef(); OpalMessageRef response; Console.WriteLine("Hold"); command.SetMessageType(Opal_API.OpalMessageType.OpalCmdHoldCall); command.SetCallToken(currentCallToken); if ((response = MySendCommand(command, "Could not hold call")) == null) { return(0); } heldCallToken = currentCallToken; currentCallToken = null; return(1); }