Adjust the time of your PBX (including the time zone) to your local time. The PBX will generate call logs with your local time.

1. Go to Settings > System > Date & Time.
2. Select your time zone.
3. (Optional) Configure Daylight Saving Time.
4. Click Save.
5. On the pop-up window in the bottom right corner, click Yes to reboot the system

The default system prompt on the PBX is US English prompt. The PBX supports multiple language prompts. You can update the system prompt from the cloud server directly or upload system prompt from local PC.

1. Go to Settings > PBX > Voice Prompt > System Prompt.
2. Click Download Online Prompt.
3. In the Download Online Prompt window, choose your desired system prompt, click  .
   The new downloaded system prompt will appear in the Prompt List.
4. In the Prompt List, select one system prompt as the default prompt.
5. Click Save and Apply.

To avoid that your trusted IP address would be blocked, you need to add your trusted IP address, especially the IP/domain of your office, into the Whitelist.

1. Go to Settings > System > Security > IP Whitelist, click Add.
2. On the configuration page, enter the name and your trusted IP/domain.
   
   • Name: Set a name for the IP whitelist.
   • Description: Enter description of the trusted IP/domain.
   • Type: Choose IPor Domain Name.
   • Source IP Address: If you choose IP type, enter the trusted IP address.
   • Domain Name: If you choose Domain Name, enter the domain of the trusted domain.
3. Click Save and Apply.

The default extension range is from 1000 to 5999. Before you create extensions, you can change the extension range according to your needs.

1. Log in PBX web interface, go to Settings > PBX > General > Preferences > Extension Preferences.
2. Change the range of User Extensions.
3. Click Save and Apply.

Yeastar Cloud PBX supports to add SIP extensions in bulk.

1. Go to Settings > PBX > Extensions, click Bulk Add.
2. On the Basic page, go to General section, and configure the following settings:

   Note:

   • A random Registration Password and a random User Password will be assigned for each extension.
   
   • Start Extension: Enter the first extension number. The system will create extensions in bulk starting with the extension number.
   • Create Number: Enter the number of extensions that will be created.
   • Concurrent Registrations: Yeastar Cloud PBX supports to register one extension number on multiple phones. When a call reaches the extension number, all phones will ring.
   • Prompt Language: The language of the voice prompts. The default prompt language is the same as the system language. If the extension user speaks a foreign language, you can set a specific system prompt.
     Note: Before selecting other system prompts, go to Settings > PBX > Voice Prompts > System Prompt to download online prompts.
3. Optional: Click Features, Advanced, or Call Permission tab to configure other settings.
4. Click Save and Apply.

To use VoIP extensions, you need to register the extensions on your IP phones or softphones.

1. Log in the Yealink phone web interface, click the Account tab.
2. From the Account drop-down list, select an available account.
3. Set Line Active to Enabled.
4. Enter the extension information.
   • Label: The name you want to display on the phone screen.
   • Display Name: The name you want to display on another person’s phone screen when you are calling the phone.
   • Register Name: Enter the extension’s Registration Name.
   • User Name: Enter the extension number.
   • Password: Enter the extension’s Registration Password.
   • SIP Server Host: Enter the PBX’s domain.
   • Port: Enter the PBX’s SIP port.

   

5. Click Confirm.

When a call comes into the PBX from outside, PBX needs to know where to direct it. The incoming call can be directed to an extension, a ring group, a queue, or a digital receptionist (IVR) etc. For this purpose, you need to set up inbound routes on the PBX.

1. Go to Settings > PBX > Call Control > Inbound Routes.
2. Click  to edit the default inbound route.
3. In the Member Trunks field, double click the desired trunk in the Available box, the trunk will appear on the Selected box.
   
4. In the Destination field, select a destination for the inbound route (e.g. extension 1001).
   
5. Click Save and Apply.