http bridge 的原理是cti模块实现了一个cti_bridge的FreeSWITCH APP,可以在呼出之前调用HTTP接口获取呼出参数，可用于实现小号业务，隐私号业务等外呼之前动态绑定主叫和被叫号码，也可用于呼入业务由HTTP接口控制呼入转接规则。
配置
<action application="cti_bridge" data="http://ip/binding?number=${destination_number}&callerid={caller_id_number} connect_timeout response_timeout notify_type"/> 复制代码
- 第一个参数 请求的URL,URL和参数可自定义
- 第二个参数 connect_timeout 连接超时 单位毫秒，默认3000
- 第三个参数 response_timeout 等待http接口响应的超时 单位毫秒 默认 3000
- 第四个参数 notify_type 0：不要呼叫进度通知 1：需要呼叫进度通知，默认1
接口说明
接收到一个呼入后，cti_bridge会把呼叫信息送给接口，接口返回转接信息。以下是返回信息说明
通用用参数说明
variables 可用于设置通道变量，比如主叫号码（origination_caller_id_number），编码（absolute_codec_string）等
number 转接号码（被叫号码）
通过网关呼出 gateway网关名，number被叫号码
{ "variables": { "origination_caller_id_number": "123", "absolute_codec_string": "PCMA,PCMU" }, "dial": { "type": "gateway", "number": "123456", "gateway": "gw" } } 复制代码
通过注册分机呼出，一般用于注册方式对接到fs,user注册的分机号
{ "dial": { "type": "user", "number": "123456", "user": "1000" } } 复制代码
通过IP直接呼出，ip中继|VOS|网关的IP:PORT
{ "dial": { "type": "ip", "number": "123456", "ip": "网关IP"， "sofia": "external" } } 复制代码
通过自定义拨号串呼出，
{ "dial": { "type": "dialstring", "dialstring": "sofia/external/158@ip:port" } } 复制代码
顺序转接给多个号码，第一个号码呼叫失败，继续转接给第二个号码
{ "dial": { "type": "dialstring", "dialstring": "{ignore_early_media=true}sofia/gateway/网关1/号码1,sofia/gateway/网关2/号码2" } } 复制代码
不转接，直接挂断
{ "dial": { "type": "hangup", "cause": 16, "sipcode": 500 } } cause和sipcode只需要配置一个，sipcode就是SIP代码·cause 取值说明： typedef enum { SWITCH_CAUSE_NONE = 0, SWITCH_CAUSE_UNALLOCATED_NUMBER = 1, SWITCH_CAUSE_NO_ROUTE_TRANSIT_NET = 2, SWITCH_CAUSE_NO_ROUTE_DESTINATION = 3, SWITCH_CAUSE_CHANNEL_UNACCEPTABLE = 6, SWITCH_CAUSE_CALL_AWARDED_DELIVERED = 7, SWITCH_CAUSE_NORMAL_CLEARING = 16, SWITCH_CAUSE_USER_BUSY = 17, SWITCH_CAUSE_NO_USER_RESPONSE = 18, SWITCH_CAUSE_NO_ANSWER = 19, SWITCH_CAUSE_SUBSCRIBER_ABSENT = 20, SWITCH_CAUSE_CALL_REJECTED = 21, SWITCH_CAUSE_NUMBER_CHANGED = 22, SWITCH_CAUSE_REDIRECTION_TO_NEW_DESTINATION = 23, SWITCH_CAUSE_EXCHANGE_ROUTING_ERROR = 25, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER = 27, SWITCH_CAUSE_INVALID_NUMBER_FORMAT = 28, SWITCH_CAUSE_FACILITY_REJECTED = 29, SWITCH_CAUSE_RESPONSE_TO_STATUS_ENQUIRY = 30, SWITCH_CAUSE_NORMAL_UNSPECIFIED = 31, SWITCH_CAUSE_NORMAL_CIRCUIT_CONGESTION = 34, SWITCH_CAUSE_NETWORK_OUT_OF_ORDER = 38, SWITCH_CAUSE_NORMAL_TEMPORARY_FAILURE = 41, SWITCH_CAUSE_SWITCH_CONGESTION = 42, SWITCH_CAUSE_ACCESS_INFO_DISCARDED = 43, SWITCH_CAUSE_REQUESTED_CHAN_UNAVAIL = 44, SWITCH_CAUSE_PRE_EMPTED = 45, SWITCH_CAUSE_FACILITY_NOT_SUBSCRIBED = 50, SWITCH_CAUSE_OUTGOING_CALL_BARRED = 52, SWITCH_CAUSE_INCOMING_CALL_BARRED = 54, SWITCH_CAUSE_BEARERCAPABILITY_NOTAUTH = 57, SWITCH_CAUSE_BEARERCAPABILITY_NOTAVAIL = 58, SWITCH_CAUSE_SERVICE_UNAVAILABLE = 63, SWITCH_CAUSE_BEARERCAPABILITY_NOTIMPL = 65, SWITCH_CAUSE_CHAN_NOT_IMPLEMENTED = 66, SWITCH_CAUSE_FACILITY_NOT_IMPLEMENTED = 69, SWITCH_CAUSE_SERVICE_NOT_IMPLEMENTED = 79, SWITCH_CAUSE_INVALID_CALL_REFERENCE = 81, SWITCH_CAUSE_INCOMPATIBLE_DESTINATION = 88, SWITCH_CAUSE_INVALID_MSG_UNSPECIFIED = 95, SWITCH_CAUSE_MANDATORY_IE_MISSING = 96, SWITCH_CAUSE_MESSAGE_TYPE_NONEXIST = 97, SWITCH_CAUSE_WRONG_MESSAGE = 98, SWITCH_CAUSE_IE_NONEXIST = 99, SWITCH_CAUSE_INVALID_IE_CONTENTS = 100, SWITCH_CAUSE_WRONG_CALL_STATE = 101, SWITCH_CAUSE_RECOVERY_ON_TIMER_EXPIRE = 102, SWITCH_CAUSE_MANDATORY_IE_LENGTH_ERROR = 103, SWITCH_CAUSE_PROTOCOL_ERROR = 111, SWITCH_CAUSE_INTERWORKING = 127, SWITCH_CAUSE_SUCCESS = 142, SWITCH_CAUSE_ORIGINATOR_CANCEL = 487, SWITCH_CAUSE_CRASH = 500, SWITCH_CAUSE_SYSTEM_SHUTDOWN = 501, SWITCH_CAUSE_LOSE_RACE = 502, SWITCH_CAUSE_MANAGER_REQUEST = 503, SWITCH_CAUSE_BLIND_TRANSFER = 600, SWITCH_CAUSE_ATTENDED_TRANSFER = 601, SWITCH_CAUSE_ALLOTTED_TIMEOUT = 602, SWITCH_CAUSE_USER_CHALLENGE = 603, SWITCH_CAUSE_MEDIA_TIMEOUT = 604, SWITCH_CAUSE_PICKED_OFF = 605, SWITCH_CAUSE_USER_NOT_REGISTERED = 606, SWITCH_CAUSE_PROGRESS_TIMEOUT = 607, SWITCH_CAUSE_INVALID_GATEWAY = 608, SWITCH_CAUSE_GATEWAY_DOWN = 609, SWITCH_CAUSE_INVALID_URL = 610, SWITCH_CAUSE_INVALID_PROFILE = 611, SWITCH_CAUSE_NO_PICKUP = 612, SWITCH_CAUSE_SRTP_READ_ERROR = 613 } switch_call_cause_t; 复制代码
进度通知
- URL 就是cti_bridge配置的URL
- action
- request 请求转接参数
- hangup 通话挂断
- ring 收到180
- progress 收到183
- answer 通话应答
- uuid 通话UUID
