Q&A
Q1：国际短信支持哪些对接方式？
A1：我们主要提供2种主流，稳定的对接协议。HTTP和SMPP对接
Http对接文档：https://www.nxcloud.com/document/sms/mt-sending
Smpp 按照标准协议，对接信息如下：
smpp1.nxcloud.com/47.52.252.175 或者
smpp2.nxcloud.com/8.210.145.163
Port: 6001
Appkey: 部分对接方可能称为 System_id
Secretkey: 部分对接方可能称为 Password
Binds: 链接数默认4个（如果有更多的绑定数需求可以联系我们扩大）
TPS: 60/bind
CMPP对接：
地址：47.90.126.195
端口：6002
链接数：4个
TPS：60/1个链接
CMPP版本：CMPP3.0
Appkey：仅提供前6位
Appsecret：提供8位
Q2：对接调试失败
A2.：短信下发文档以及对应的错误码：https://www.nxcloud.com/document/sms/mt-sending
Q3：客户做了回调推送地址，其服务器需要对我们退回数据的IP地址进行加白
A3：需要加白以下IP
47.90.126.195
47.56.220.103
8.210.132.139
8.210.145.163
47.243.46.97
8.210.11.198
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