When is a call internal or external? Calls are decided to be either local or external based on whether the contact IP of an inbound SIP packet is local or not. To check whether the IP is local, 3CX Phone System uses the following process: It queries all IPs assignedto the PC on which it is installed. Using the subnet masks assigned, it checks whether the IP is local ACCORDING t [...]
3CX Phone System has a coded limit that controls the duration of a voicemail message. This is set by default to 120 seconds. However, in certain circumstances, you may wish to change the 3CX Voicemail timeout from the default of 2 minutes (120 seconds) to something else. In this case, we will show how we can change it to 5 minutes. This change can be achieved as follows on v15: [...]
The calls end after 3 hours to prevent a scenario where a person makes a call somewhere and forgets to hang up AND the gateway does not detect the hangup. This avoids terminated calls from remaining active and helps to avoid charges. It is a fail safe feature. The 3CX Phone System is set to end calls every 10800 Seconds. This Value can be changed to any time value you like from [...]