Tutorials: Bulk Import Extensions

Required Access: Grandstream

Last Updated: 7/14/2025

Under the "Extension / Trunk" tab, click on "Extensions" from the drop down.

Since there are many fields, it is recommended to create a single extension. You would then export it so that all the extensions have the same settings.

You will update the following fields:

• Extension: Extension Number
• CallerID Number (Optional): Number to be displayed as outbound caller ID
• SIP/IAX Password: See Command below
• Voicemail Password: See Command below

• User Password: See Command below
• First Name: First name of user
• Last Name: Last name of user
• Email Address: Email of user
• Phone Number: Cell phone number of user.

Not Shown:

• Permission: Access this extension has to outbound call:

1. Internal
2. Local
3. National
4. International

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Helpful Commands:

SIP/IAX Password: =RANDBETWEEN(0,99)&CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(97,122))&CHAR(RANDBETWEEN(97,122))&RANDBETWEE N(100,9999)&CHAR(RANDBETWEEN(65,90))

Special Characters recommended: ~!@+#$%^*

Voicemail Password: =RANDBETWEEN(100000,999999)

User Password: =CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(97,122))&CHAR(RANDBETWEEN(33,47))&CHAR(RANDBETWEEN(97,122))&RAND BETWEEN(100,9999)&CHAR(RANDBETWEEN(65,90))

Special Characters recommended: ~!@+#$%^*

Save the extension file and import it.

Select the file. Please use UTF-8 encoding when importing a .CSV file. .CSV files can be opened using programs such as Notepad and saved as a UTF-8 encoded file.

Verify and apply your changes.