工业IP电话无法正确结束通话(被叫挂断后,主叫保持通话状态)

介绍

概述

电话振铃且被叫方应答后,通话建立并正常通话。当被叫方挂断电话时,电话返回到空闲状态。但是,主叫方仍然保持在通话状态,无法自动结束通话。

适用型号

本公司所有型号的IP电话。

目标受众

本文档适用于遇到此问题的所有用户。

根本原因

被叫方挂断电话时,电话会主动向主叫方发送BYE消息以请求终止通话。电话将请求消息发送到先前收到的消息的VIA头中包含的地址。在某些网络部署中,PBX位于内部网络,但通过NAT映射到公共网络。这类PBX发送的SIP消息在VIA头中包含私有IP地址。结果,电话无法将后续请求消息正确传送到对端,导致无法挂断通话。

解决方案

启用电话配置中的“直接联系”功能,允许电话直接将请求消息发送到对端Contact头中指定的地址。请按照以下步骤操作:

步骤 1

登录电话的网页界面,导航至系统 > 系统配置,右键点击并选择链接另存为...将配置文件保存为config.txt

系统配置

步骤 2

打开config.txt文件,使用Ctrl+F搜索关键字Direct Contact。将SIP1 Direct Contact :0SIP2 Direct Contact :0的值分别改为SIP1 Direct Contact :1SIP2 Direct Contact :1,然后保存文件。
 配置

步骤 3

再次登录电话的网页界面,进入系统 > 系统配置 > 导入配置。点击选择文件,选择修改后的config.txt文件,然后点击导入。电话将自动重启以完成配置更新。

系统配置


目录
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