Simonesip响应状态码487
的有关信息介绍如下：
类型状态码状态说明
100 Trying正在处理中180 Ringing振铃181 call being forwarder呼叫正在前向182 queue排队183session progress会话进行
200 OK会话成功
300 multiple多重选择301 moved permanently永久移动302 moved temporaily临时移动305 use proxy用户代理380 alternative service替代服务
400 bad request错误请求401unauthorized未授权402 payment required付费要求403 forbidden禁止404 not found未发现405 method no allowed方法不允许406 not acceptable不可接受407 proxy authentication required代理需要认证408 request timeout请求超时410 gone离开413 request entity too large请求实体太大414 request-url too long请求URL太长415 unsupported media type不支持的媒体类型416 unsupported url scheme不支持的URL计划420 bad extension不良扩展421 extension required需要扩展423 interval too brief间隔太短480 temporarily unavailable临时失效481 call/transaction does not exist呼叫/事务不存在482 loop detected发现环路483 too many hops跳数太多484 address incomplete地址不完整485 ambiguous不明朗486 busy here这里忙487 request terminated请求终止488 not acceptable here这里请求不可接受491 request pending未决请求493 undecipherable不可辨识
500 server internal error服务器内部错误501 not implemented不可执行502 bad gateway坏网关
