C#实现IVR(基于东进的语音卡)-1

上一年在公司做了一个小小的IVR项目.觉得这是一个和硬件驱动交互编程的不错例子.
共享一下.也讨论一下.
代码:(这个是调用系统驱动的DLL)

using System;
using System.Text;
using DJVoiceCard.Lib;

namespace DJVoiceCard.DL
{
    public class SysFunction
    {
        系统操作#region 系统操作

        /**//// <summary>
        /// 初始化系统
        /// </summary>
        /// <returns></returns>
        public static bool SysInit(ref string sErr)
        {
            try
            {
                StringBuilder sSys_INC = new StringBuilder("");
                StringBuilder sPrompt_INC = new StringBuilder("Prompt.ini");
                int iSysInit = ISUP_Lib.DJISUP_InitSystem();
                int iCardInit = DJFunction.DJSys_EnableCard(sSys_INC, sPrompt_INC);
                bool iPromptInit = DJFunction.DJSys_EnableDtmfSend();
                if (iSysInit == 1)
                {
                    if (iCardInit == 0)
                    {
                        if (iPromptInit)
                        {
                            return true;
                        }
                        else
                        {
                            sErr = "未能加载声音文件" + iPromptInit.ToString();
                            return false;
                        }
                    }
                    else
                    {
                        sErr = iCardInit.ToString();
                        return false;
                    }
                }
                else
                {
                    sErr = iSysInit.ToString();
                    return false;
                }
            }
            catch (Exception ex)
            {
                sErr = ex.Message;
            }
            return false;
        }

        /**//// <summary>
        /// 退出系统
        /// </summary>
        public static void SysExit()
        {
            DJFunction.DJSys_DisableCard();
            ISUP_Lib.DJISUP_ExitSystem();
        }

        #endregion

        中继通道操作#region 中继通道操作

        /**//// <summary>
        /// 获取中继通道总数
        /// </summary>
        /// <returns></returns>
        public static int iTrkTotal()
        {
            return DJFunction.DJTrk_GetTotalTrunkNum();
        }

        /**//// <summary>
        /// 信道状态;
        /// </summary>
        /// <param name="PCM_NO"></param>
        /// <param name="Relay_NO"></param>
        /// <returns></returns>
        public static int iRaleyStetes(byte PCM_NO, byte Relay_NO)
        {
            return ISUP_Lib.DJISUP_GetChnState(PCM_NO, Relay_NO);
        }


        /**//// <summary>
        /// 循环刷新缓存;
        /// </summary>
        public static void Push_GerEvent()
        {
            try
            {
                ISUP_Lib.DJISUP_GetEvent();
                DJFunction.DJSys_PushPlay();
            }
            catch(Exception Ex)
            {
               
            }
        }

        /**//// <summary>
        /// 获得中继号
        /// </summary>
        /// <param name="iTrunkID"></param>
        /// <returns></returns>
        public static int iPCMID(int iTrunkID)
        {
            return DJFunction.DJTrk_GetPcmID(iTrunkID);
        }

        /**//// <summary>
        /// 被叫号码
        /// </summary>
        /// <param name="PCM_NO"></param>
        /// <param name="Relay_NO"></param>
        /// <returns></returns>
        public static TC_INI_TYPE GetCallNum(int PCM_NO, int Relay_NO)
        {
            TC_INI_TYPE sReVal = new TC_INI_TYPE();
            ISUP_Lib.DJISUP_GetCalleeNum((byte)PCM_NO, (byte)Relay_NO, ref sReVal);
            return sReVal;
        }

        /**//// <summary>
        /// 主叫号码
        /// </summary>
        /// <param name="PCM_NO"></param>
        /// <param name="Relay_NO"></param>
        /// <returns></returns>
        public static TC_INI_TYPE GetCallerNum(int PCM_NO, int Relay_NO)
        {
            TC_INI_TYPE sReVal = new TC_INI_TYPE();
            ISUP_Lib.DJISUP_GetCallerNum((byte)PCM_NO, (byte)Relay_NO, ref sReVal);
            return sReVal;
        }

        /**//// <summary>
        /// 获取用户按键
        /// </summary>
        /// <param name="Relay_NO"></param>
        /// <returns></returns>
        public static StringBuilder GetUserKeyPress(int Relay_NO)
        {
            return ISUP_Lib.DJTrk_GetDtmfCode(Relay_NO);
        }

        /**//// <summary>
        /// 设置中继信道的状态;
        /// </summary>
        /// <param name="iTrunkID"></param>
        /// <param name="States"></param>
        public static void SetRelayStates(int iTrunkID, int States)
        {
            ISUP_Lib.DJISUP_SetChnState(((byte)(iTrunkID / 30)), ((byte)(iTrunkID % 30)), (byte)States);
        }


        /**//// <summary>
        /// 呼出
        /// </summary>
        /// <param name="iTrunkID"></param>
        /// <param name="CalleeNum"></param>
        /// <param name="CallerNum"></param>
        /// <returns></returns>
        public static bool bCallOut(int iTrunkID, string CalleeNum, string CallerNum, ref string sErr)
        {
            StringBuilder Callee = new StringBuilder(CallerNum);
            StringBuilder Caller = new StringBuilder(CalleeNum);
            if (iTrunkID != -1)
            {
                bool bRel = ISUP_Lib.DJISUP_Callout(iTrunkID / 30, iTrunkID % 30, ref Callee, ref Caller);
                //sErr = Callee.ToString() + "||" + Caller.ToString()+"||"+iTrunkID.ToString();
                return bRel;
            }
            else
            {
                sErr = "NaN";
                return false;
            }
        }

        /**//// <summary>
        /// string
        /// </summary>
        /// <param name="iTrunkID"></param>
        /// <param name="CalleeNum"></param>
        /// <param name="CallerNum"></param>
        /// <returns></returns>
        public static bool bCallOut(int iTrunkID, string CalleeNum, string CallerNum)
        {
            char[] telNum = new char[120];
            PR p = new PR();
            p.TelarrChar = telNum;
            telNum = CalleeNum.ToCharArray();
            byte[] _telNum = new byte[120];
            _telNum = Encoding.ASCII.GetBytes(telNum);


            char[] CallNum = new char[120];
            CallNum = CallerNum.ToCharArray();
            byte[] _CallNum = new byte[120];
            p.CallarrChar = CallNum;
            _CallNum = Encoding.ASCII.GetBytes(CallerNum);

            if (iTrunkID != -1)
            {
                return ISUP_Lib.DJISUP_Callout(iTrunkID / 30, iTrunkID % 30, ref CalleeNum, ref CallerNum);
            }
            else
            {
                return false;
            }
        }

        /**//// <summary>
        /// byte][
        /// </summary>
        /// <param name="iTrunkID"></param>
        /// <param name="CalleeNum"></param>
        /// <param name="CallerNum"></param>
        /// <returns></returns>
        public static bool bCallOut(int iTrunkID, byte[] CalleeNum, byte[] CallerNum)
        {
            unsafe
            {
                if (iTrunkID != -1)
                {
                    return ISUP_Lib.DJISUP_Callout(iTrunkID / 30, iTrunkID % 30, CalleeNum, CallerNum);
                }
                else
                {
                    return false;
                }
            }
        }

        /**//// <summary>
        /// char *
        /// </summary>
        /// <param name="iTrunkID"></param>
        /// <param name="calleeNum"></param>
        /// <param name="callerNum"></param>
        /// <returns></returns>
        public static unsafe bool bCallOut(int iTrunkID, StringBuilder calleeNum, StringBuilder callerNum)
        {
            unsafe
            {
                if (iTrunkID != -1)
                {
                    return ISUP_Lib.DJISUP_Callout(iTrunkID / 30, iTrunkID % 30, calleeNum, callerNum);
                }
                else
                {
                    return false;
                }
            }
        }