3CX PBX in the Cloud
1 year FREE - no ties!
google cloud platform
3CX
Zero Admin
With the new Dashboard
3CX
Bulletproof Security
With SSL certs and NGINX
3CX
Install on $200 Appliance
Intel MiniPC architecture
3CX
New, Intuitive Windows Client
More themes, more UC
3CX
More CRM Integrations
Scripting Interface to add your own
3CX
Improved Integrated Web Conferencing
iOS and Android apps included
3CX
Run On-Premise or in the Cloud
Google, OVH, Windows & Linux
Fast & easy call management
With the 3CX Web Client

IP PBX:IP PBX/網路電話系統是如何工作的?

網路電話系統/ IP PBX系統由一個或多個SIP電話/網路電話,以及一個IP PBX伺服器組成,還可以選用一個網路電話網關。IP PBX伺服器與代理伺服器類似:SIP用戶端可以是軟體電話或者基於硬體的電話,它向IP PBX伺服器登記,當其希望進行呼叫時,便向IP PBX請求建立連接。IP PBX具有所有電話/用戶的姓名位址錄及其相應的SIP位址,因而能夠通過網路電話網關或網路電話服務業者提供的VOIP服務來連接內部呼叫或發送外部呼叫。

Example of how an IP PBX/VoIP Phone System works
IP PBX如何在網路上集成並使用PSTN或網際網路來連接呼叫。