如何拒絕IP電話上的匿名通話?

簡介

概述

電話機偶爾會接收到騷擾來電或不明來源通話。為避免此類撥入,可透過設定攔截匿名來電。

適用機型

適用於本公司全系列電話機。

適用對象

本文件供使用者參考,用於設定內建防火牆與通話控制功能,以拒絕匿名來電。

解決方案

方式一:設定防火牆規則

1. 登入電話機網頁介面,前往“Security” -- “Network Firewall” -- “Firewall Settings”。將“Input/Output”設為 Input,“Deny/Allow”設為 Allow,“Protocol Type”維持預設值,於“Source Port Range”輸入 0-65535,“Source Address”填入伺服器IP位址,“Source Subnet Mask”填入伺服器IP對應之子網遮罩,點擊“Add”儲存規則。於“Firewall Rule Settings”勾選“Enable Input Rules”並送出設定。
Configure firewall rules 
2. 在同頁面新增第二條規則,封鎖伺服器IP以外的所有位址連線,避免非授權裝置傳送資料至電話機。設定方式如下:

Block all IP addresses except the server IP from sending data to the phone
備註:完成兩項設定後,僅有 PBX伺服器(172.18.1.88)可與電話機進行資料傳輸,其餘主機皆會被阻擋,話機只接受交換器合法通話連線。

方式二:啟用嚴格UA比對 + 拒絕匿名來電

1. 登入電話機網頁介面,前往“Line” -- “SIP” -- “Global Settings”,勾選“Enable Strict UA Matching”。
Enable Strict UA Matching
2. 接續進入“Line” -- “Advanced Settings”,勾選“Reject Anonymous Calls”,送出並儲存設定。
Reject anonymous calls

目錄
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