2023年12月11日 · Fixed Dialing Numbers, also known as Fixed Dialing Mode, is a common feature on GSM mobile phones that allows users to restrict outgoing calls to only a specific list of pre-approved numbers. Once FDN is activated, the phone will block calls attempts to any numbers not on the FDN list, with the exception of emergency service numbers.

Fixed Dialing Number (FDN) is a service mode of a GSM mobile phone 's SIM card. [1] Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes. [1] A notable exception is that emergency calls to 000, 112, 911, 999 and the like are exempt. [2]

2016年4月21日 · Fixed Dialing Number (FDN) is a service mode of a GSM phone's Subscriber Identity Module (SIM) card. Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes.

2020年9月13日 · Fixed Dialing Number ( FDN) is a service mode of a GSM phone’s Subscriber Identity Module (SIM) card. Numbers are added to the FDN list, and when activated, FDN restricts outgoing calls to only those numbers listed, or to numbers with certain prefixes.

2024年4月3日 · 手机FDN是一种安全通话控制功能，防止无意中拨出高收费电话或不必要的号码。 例如，企业为员工发放的手机，可设置为只能拨打公司内部电话或其他指定座机电话，避免员工滥用手机资源或泄露对公司不利的信息。

2016年6月18日 · 电信fdn模式是指指定拨号模式：也叫FDN (Fixed dialer number)方式拨号。 就是只允许呼出FDN菜单中自己输入的电话号码，设定指定拨号后，你的手机只能拨出有限的几个号码啦。

当启动固定拨号的时候，SIM卡电话簿被禁止访问，同时在电话簿里出现“FDN电话簿”，FDN里显示你设定的固定拨号的号码。 这时，你无法拨出FDN以外的电话号码。 在启用（取消）这个功能和添加（更改、删除）FDN号码的时候需要用到PIN2。

2022年3月12日 · 人工混响中比较流行的有两种，一种是基于Schrocder和Moorer的实现，另一种就是FDN，本文是FDN早期的论文翻译，希望能对读者带来一定的帮助。 原文链接_schroeders reverberator ();

2021年1月6日 · A feature that allows the phone to be "locked" so that it can only dial certain numbers, or numbers with certain prefixes. A PIN code (numeric password) protects the allowed list of numbers from...

FDN in Technology commonly refers to Fixed Dialling Number, a feature that restricts outgoing calls to a predetermined list of numbers on a mobile device, enhancing security and control over communications. This feature is particularly useful for users who want to …