在前期导入SDK包和相关静态库的添加，以及报错问题可以参考 江湖哥的博客http://blog.csdn.net/frf881128/article/details/50234479 写得很给力啊，还有以下这位的文章http://julang200.com/ios/2015/02/05/linphone-iphone代码解读.html
本文主要简述一下流程
1.初始化 startLibLinphone*
（1）模块初始化，包含mediastreamer2、ilbc、silk、amr、x264、h264、bcg729 <pre>ms_init();
libmsilbc_init();
libmssilk_init();
libmsamr_init();
libmsx264_init();
libmsopenh264_init();
libmsbcg729_init(); </pre> *
（2）创建linphone core(createLinphoneCore)
<pre> theLinphoneCore =linphone_core_new_with_config (&linphonec_vtable ,configDb ,self /* user_data /);</pre> linphonec_vtable(LinphoneManager.m) <pre> staticLinphoneCoreVTable linphonec_vtable = {
.show =NULL,
.call_state_changed =(LinphoneCoreCallStateChangedCb)linphone_iphone_call_state,
.registration_state_changed = linphone_iphone_registration_state,
.notify_presence_received=NULL,
.new_subscription_requested = NULL,
.auth_info_requested = NULL,
.display_status = linphone_iphone_display_status,
.display_message=linphone_iphone_log,
.display_warning=linphone_iphone_log,
.display_url=NULL,
.text_received=NULL,
.message_received=linphone_iphone_message_received,
.dtmf_received=NULL,
.transfer_state_changed=linphone_iphone_transfer_state_changed,
.is_composing_received = linphone_iphone_is_composing_received,
.configuring_status= linphone_iphone_configuring_status_changed,
.global_state_changed =linphone_iphone_global_state_changed }; </pre> LinphoneCoreVTable包含: global_state_changed 全局状态改变回调；
registration_state_changed注册状态回调； call_state_changed 呼叫状态回调 * ...(详见linphonecore.h)
（3）初始化audio session<pre> AVAudioSession *audioSession = [AVAudioSession sharedInstance];
BOOL bAudioInputAvailable= audioSession.inputAvailable ;
[audioSession setActive:NO error: &err ];
</pre>
2.注册
（1）linphone_auth_info_new 生成人证信息
（2）linphone_core_clear_all_auth_info 清空所有认证信息
（3）linphone_core_add_auth_info 添加认证信息
3.配置项
<pre>linphone_core_set_sip_transports 设置sip传输协议有TCP、UDP、TLS
linphone_address_set_username 设置用户名
linphone_address_set_domain 设置域名
linphone_auth_info_new 创建认证信息
linphone_core_add_auth_info 添加认证信息
linphone_core_enable_payload_type 音视频开关配置 </pre>
4.来电通知
当有来电时，会触发call_state_changed发生变化（linphonec_vtable),于是会回调linphone_iphone_call_state
<pre> static void linphone_iphone_call_state(LinphoneCorelc, LinphoneCall call, LinphoneCallState state,const char* message)
{
[(LinphoneManager*)linphone_core_get_user_data(lc) onCall:call StateChanged: statewithMessage: message];
} </pre>呼叫状态如下 :
<pre>
typedef enum_LinphoneCallState{
LinphoneCallIdle = 0, //初始化状态
LinphoneCallIncomingReceived =1, // 来电
LinphoneCallOutgoingInit = 2, //开始呼出
LinphoneCallOutgoingProgress = 3, //正在处理呼出
LinphoneCallOutgoingRinging = 4, //呼出正在响铃
LinphoneCallOutgoingEarlyMedia = 5, LinphoneCallConnected = 6, //接通
LinphoneCallStreamsRunning = 7, // 媒体流通道构建成功
LinphoneCallPausing = 8,LinphoneCallPaused = 9, LinphoneCallResuming = 10, LinphoneCallRefered = 11,//有新来电，转出当前会话
LinphoneCallError = 12, LinphoneCallEnd = 13, //结束
LinphoneCallPausedByRemote = 14, //远程结束
LinphoneCallUpdatedByRemote = 15, //配置更新
LinphoneCallIncomingEarlyMedia = 16, LinphoneCallUpdating =17, LinphoneCallReleased = 18
} LinphoneCallState; </pre>
后续继续更新
