概括
| 模式 | 简介 | 应用场景 | 特点 |
| AX | 单向隐私号绑定模式。用户A的真实号码通过隐私号码X保护，其他用户拨打X会转接到A。适用一对多联系A（被叫受保护）。 | 客户热线、公告电话、业务联系人展示隐私号避免泄漏真实号码（任何用户拨X接A） |
A已知 不支持回拨 |
| AXE | 在AX模式基础上增加 分机号E，一个X号码可配多个分机号，用分机区分不同A 或 场景，提高号码X的复用率。 | 外卖/快递配送等大流量场景，用一个 X + E 对应不同终端/人员，节省号码资源。 |
A已知 不支持回拨 |
| AXB | 一对一隐私号绑定。A 和 B 双方通过中间隐私号码 X 互通，双方互不知对方真实号码。 | 网约车（乘客A <—> 司机B）、一对一服务（医生咨询、法律咨询、客服与客户） |
A、B已知 支持回拨 |
| AXYB | 双隐私号绑定。为A 和 B分配两个不同隐私号X 和 Y，然后分别完成 A—>X—>Y—>B / B—>Y—>X—>A 的通话转接。比AXB提供更高的隐私隔离度。 | 高隐私需求场景，如医疗/金融咨询、企业保密沟通，双方看不到同一隐私号降低关联风险 |
A、B已知 支持回拨 |
| XYB | 类似AXYB 但省略了A侧绑定的显式 A—>X 关系，更多用于B侧通过隐私号 Y 与 外部发起联系，但对 A 的绑定是通过X/Y组合完成的（通常由平台控制转接）。 | 在A未知的情况下，当A首次拨打X时，创建AXYB关系，适用电商/外卖/快递等场景 |
B已知 当有A呼通B之后，才支持回拨 |
| AXEYB | AXE 与 AXYB的组合形式：AXE模式 + Y侧隐私号。即A—> X + E（分机）—> Y —> B。一个 X 可复用分机区分多个 A 业务，同时通过 Y 隐私号保护 B 侧。 | 大规模一对多业务中还需保护B侧隐私，如大型治疗咨询、法律咨询等场景 |
A、B已知 支持回拨 |
| NXEYB | 多路 + 分机 + 双隐私号模式：类似AXEYB，但 N 指多A、多B 映射/组 号码策略，结合分机E 和 B侧隐私Y。 | 超大规模业务下的隐私通话编排，例如平台派单、呼叫中心多角色场景。如一个订单显示X和E,多个客服通过该XE联系到客户。且支持客户回拨。 |
B已知 当有A呼通B之后，才支持回拨 |
各模式补充说明：
- A / B：真实用户号码
- X / Y：隐私号（中间虚拟号码）
- E（Extension）：分机号，用于在单一X号码下 区分不同实际终端/用户
- N：通常表示 N-way ，在隐私号产品中用于表示“多对多关系 或 分组配置”
具体模式
如果跟官网 https://www.nxcloud.com/document/pns/PNS-MODEL-DESCTIPTION 保持一致，非技术人员能看懂吗？
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