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why one-way audio problem?
Almost all of us will meet this problem when we deploy our first VoIP network. We are often confused: why I cannot hear peer guy but he can hear me? why we cannot hear each other? The root reason is...
View ArticleBlock some extensions
Sometimes, we need limit the call right of some extensions. For example, we want to limit only specific extensions can make out-group calls to outsides, others can only make calls between extensions....
View ArticleBlock anonymous calls
We can use “system black list” feature to block anonymous calls. Please click menu “services – system black list” and add a record: caller number prefix = anonymous called number prefix = * rate = 100...
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