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

        中继通道操作

        获取空闲中继信道

        用户
    }
}

Code

Code

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using DJVoiceCard.Lib;

namespace DJVoiceCard.DL
{
    class DataInc
    {

    }
    public enum RelaySet : int 
    {
            ISUP_CH_SET_FREE=1,
        //锁闭通道
            ISUP_CH_SET_BLOCK=2,
        //解除锁闭
            ISUP_CH_SET_UNBLOCK=3,
        //来话方动作，来话到达后，送被叫闲信号，话路接通，但不送应答信号
            ISUP_CALLEE_SET_ACM=4,
        //被叫摘机信号
            ISUP_CALLEE_SET_ANM=5,
        //来话方动作，来话到达后，送被叫闲信号，话路接通，送应答信号
            ISUP_CALLEE_SET_CON    =6,
        //送线路释放信号
            ISUP_CH_SET_REL    =7,
        //群锁闭
            ISUP_CH_SET_CGB    =8,
        //群解除锁闭
            ISUP_CH_SET_CGU    =9,
        //后续地址
            ISUP_CALLER_SET_SAM=10,
        //暂停
            ISUP_CH_SET_SUS=11,
        //恢复
            ISUP_CH_SET_RES=12,
        

        //锁闭通道证实
         ISUP_CH_SET_BLA=0x81,
        //解除锁闭证实
         ISUP_CH_SET_UBA=0x82,
        //电路复原
         ISUP_CH_SET_RSC=0x83,
        //信息请求
         ISUP_CH_SET_INR=0x84,
        //信息
         ISUP_CH_SET_INF=0x85,
        //群锁闭证实
         ISUP_CH_SET_CGBA=0x92,
        //群解除锁闭证实
         ISUP_CH_SET_CGUA=0x94,
        //群复原
         ISUP_CH_SET_GRS=0x95,
        //群复原证实
         ISUP_CH_SET_GRA=0x96,
        //群问讯
         ISUP_CH_SET_CQM=0x97,
        //群问讯响应
         ISUP_CH_SET_CQR=0x98,
        //释放完成
         ISUP_CH_SET_RLC=0x99,
        //混淆
         ISUP_CH_SET_CFN=0x9a,
        //呼叫进展
         ISUP_CALLEE_SET_CPG=0xa2,
    }
    /// <summary>
    /// 信道状态
    /// </summary>
    public enum RelayStates : int 
    {
        /// <summary>
        /// // 空闲状态
        /// </summary>
         ISUP_CH_FREE=1,  　
        /// <summary>
        /// // DLL等待应用程序同步释放资源
        /// </summary>
         ISUP_CH_WAIT_RELEASE=2 ,    　
        /// <summary>
        /// // 本地闭塞状态
        /// </summary>
         ISUP_CH_LOCAL_BLOCK=3 ,    　
        /// <summary>
        /// // 远端闭塞状态
        /// </summary>
         ISUP_CH_REMOTE_BLOCK=4 ,    　
        /// <summary>
        /// //本地和远端锁闭状态
        /// </summary>
         ISUP_CH_LOCAL_AND_REMOTE_BLOCK=5 ,     
        /// <summary>
        /// // 不可用态(网络不通等原因导致)
        /// </summary>
         ISUP_CH_UNAVIABLE=6   ,  　
        /// <summary>
        /// //被叫闲,等待被叫应答
        /// </summary>
         ISUP_CALLER_WAIT_ANM=7 ,    　
        /// <summary>
        /// // 去话连通状态
        /// </summary>
         ISUP_CALLER_CONNECT=8  ,   　
        /// <summary>
        /// // 呼叫到达,接收全地址
        /// </summary>
         ISUP_CALLEE_RECV_IAM=9  ,   　
        /// <summary>
        /// // 摘机,来话连通
        /// </summary>
         ISUP_CALLEE_CONNECT=10 ,  　
        /// <summary>
        /// // 本地暂停
        /// </summary>
         ISUP_CH_LOCAL_SUSPEND=11,  　
        /// <summary>
        /// // 远端暂停
        /// </summary>
         ISUP_CH_REMOTE_SUSPEND=12,
        /// <summary>
        /// IAM消息到达
        /// </summary>
        CALLEE_IAM_REACHED=0xf0,
        /// <summary>
        /// SAM消息到达提示
        /// </summary>
        CALLEE_SAM_REACHED=0xf1,
    
    }


    /// <summary>
    /// 语音资源类型
    /// </summary>
    public enum VoiceResourcesType:int
    {
        /// <summary>
        /// 没有语音资源
        /// </summary>
        Res_NoRes = 0,
        /// <summary>
        /// 文件型语音资源
        /// </summary>
        Res_File = 1,
        /// <summary>
        /// 系统内存型语音资源
        /// </summary>
        Res_Xms = 2,
    };

    /// <summary>
    /// 语音资源操作类型
    /// </summary>
    public enum VoiceOperatorType
    {
        /// <summary>
        /// //没有语音操作
        /// </summary>
        OP_NoOperator = 0,
        /// <summary>
        /// //普通放音
        /// </summary>
        OP_Play = 1,
        /// <summary>
        /// //循环放音
        /// </summary>
        OP_LoopPlay = 2,
    };

    /// <summary>
    /// 用户状态类型
    /// </summary>
    public enum USER_STATE
    {
        /// <summary>
        /// 未摘机
        /// </summary>
        USR_OFFHOOK=0,
        /// <summary>
        /// 等待拨号
        /// </summary>
        USR_WAITDIAL=1,
        /// <summary>
        /// 拨号
        /// </summary>
        USR_DIAL=2,
        /// <summary>
        /// 结束
        /// </summary>
        USR_ENDSESSION=3,
        /// <summary>
        /// 等待语音
        /// </summary>
        USR_WAITONHOOK=4,
        /// <summary>
        /// 振铃
        /// </summary>
        USR_RING=5,
        /// <summary>
        /// 通话
        /// </summary>
        USR_CONNECT=6,
        /// <summary>
        /// 摘机中
        /// </summary>
        USR_ONHOOK = 50,
        /// <summary>
        /// 取消振铃
        /// </summary>
        USR_EXRING=51,
        /// <summary>
        /// 退出通话
        /// </summary>
        USR_EXCONNECT=52

    };

    /// <summary>
    /// 中继信道状态
    /// </summary>
    public enum TRUNK_ST
    {
        /// <summary>
        /// 空闲状态
        /// </summary>
        TRK_FREE=0,        //free state
        /// <summary>
        /// 准备状态
        /// </summary>
        TRK_READY=1,        //mfc stop state
        /// <summary>
        /// 振铃状态
        /// </summary>
        TRK_RING=2,        //ring user
        /// <summary>
        /// 拨号状态
        /// </summary>
        TRK_CALLOUT=3,    //user dial over, callout
        /// <summary>
        /// 等待摘机
        /// </summary>
        TRK_WAITUSEROFFHOOK=4,    //ring user, wait offhok
        /// <summary>
        /// 摘机状态
        /// </summary>
        TRK_WAITUSERONHOOK=5,
        /// <summary>
        /// 结束谈话
        /// </summary>
        TRK_ENDSESSION=6,            //end a talk
        /// <summary>
        /// 链接状态
        /// </summary>
        TRK_CONNECT=7,
        /// <summary>
        /// 为初始化状态
        /// </summary>
        TRK_NULLSTATE=8,
        /// <summary>
        /// 播放状态
        /// </summary>
        TRK_PLAY=9,
        /// <summary>
        /// 呼入状态
        /// </summary>
        TRK_CALLIN=10,
        /// <summary>
        /// 摘机状态
        /// </summary>
        TRK_ONHOOK=11,
        /// <summary>
        /// 挂机状态
        /// </summary>
        TRK_HANGUP=12,
    };

    /// <summary>
    /// 用户状态
    /// </summary>
    public struct UR_ST
    {
        public int ConnUrID;
        public USER_STATE ST;
        public int ConnTrID;
        
    }


    /// <summary>
    /// 对收到的ISUP消息，获取其中的原因值
    /// </summary>
    public  enum CAUSE_VALUE:int
    {
        /// <summary>
        /// 中继通道的范围越界
        /// </summary>
        RSN_PCMNULL_CALLER=-1,
        /// <summary>
        /// 收到的消息中不含有原因指示码，或没有新的ISUP消息到达
        /// </summary>
        RSN_UNKOWNNUM_ISUP=0,
        /// <summary>
        /// //空号
        /// </summary>
        RSN_UNALLOCATED_NUMBER = 0x01, 
        /// <summary>
        ///        //正常的呼叫清除
        /// </summary>
        RSN_NORMAL_CALL_CLEARING = 0x10, 
        /// <summary>
        ///  //用户忙
        /// </summary>
        RSN_USER_BUSY = 0x11,    
        /// <summary>
        ///  //无用户响应
        /// </summary>    
        RSN_NO_USER_RESPONDING = 0x12, 
        /// <summary>
        /// //被叫无应答，超时未摘机
        /// </summary>
        RSN_USER_ALERTING_NO_ANSWER = 0x13, 
        /// <summary>
        ///  //呼叫拒绝
        /// </summary>
        RSN_CALL_REJECTED = 0x15, 
        /// <summary>
        ///    //不完整的号码
        /// </summary>
        RSN_INCOMPLETE_NUMBER = 0x1c,
        /// <summary>
        ///  //正常，未规定
        /// </summary>
        RSN_NORMAL_NO_SET = 0x1f,
        /// <summary>
        /// //无可用的电路
        /// </summary>
        RSN_NO_CIRCUIT_CHANNELAVAILABLE = 0x22, 
        /// <summary>
        /// //请求的电路不可用
        /// </summary>
        RSN_REQUESTEDCIRCUIT_CHANNEL_NOTAVAILABLE = 0x2c,
        /// <summary>
        ///     //定时器超时恢复
        /// </summary>
        RSN_RECOVERY_ON_TIME_EXPIRY = 0x66,
        /// <summary>
        /// //本地释放电路
        /// </summary>
        RSN_LOCAL_RLC = 0x20,
        /// <summary>
        /// //电路复原
        /// </summary>               
        RSN_RECEIVE_RSC = 0x21,                                 

    };

    /// <summary>
    /// 信道状态
    /// </summary>
    public struct TRK_ST
    {
        public TRUNK_ST ST;
        public int ConnUrID;
        public int ConnTrID;
        public string DialNum;
    }

    public struct PR
    {
        [MarshalAs(UnmanagedType.ByValArray,SizeConst=32)]
        public char[] TelarrChar;
        public char[] CallarrChar;
    }

    public struct TelNum
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
        public byte[] arrTelNum;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
        public byte[] arrCallNum;
    }
}

这几个类是所有代码的核心内容.先贴出来,下一篇会详细说说在交互编程中遇到的问题.