System Variables

📖 Introduction

System Variables are FreeSWITCH global variables that affect PBX behavior. Most users won't need to change these, but they're available for advanced configuration.

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⚠️ Advanced Settings

WARNING

For advanced users only: Incorrect values can break your phone system. Contact support if unsure.

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🖥️ Accessing the Module

Navigation: Settings → PBX Settings → System Variables

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📝 Common Variables

Variable	Description	Default
`default_language`	System language	`en`
`default_timezone`	System timezone	`UTC`
`max_sessions`	Max concurrent calls	`1000`
`rtp_timeout`	RTP timeout (sec)	`300`
`ring_timeout`	Default ring time	`30`
`transfer_timeout`	Transfer timeout	`20`
`parking_timeout`	Park timeout	`300`

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🚀 Practical Example

Increase Ring Timeout

To ring extensions longer before going to voicemail:

Variable	Value
`ring_timeout`	`45`

Applies to all extensions unless overridden.

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💡 Tips

TIP

Document changes: Keep track of what you modify.

TIP

Test after changes: Verify calls still work.