Technical • 6 min read

SIP 486 Busy Here: Understanding and Troubleshooting

What does SIP 486 Busy Here mean? Learn about this SIP response code, common causes, and how to troubleshoot busy signal issues in VoIP.

Read this CallOrbit guide for practical detail on technical workflows, configuration steps, and implementation best practices.

  • What does SIP 486 Busy Here mean?
  • How is SIP 486 different from SIP 600 Busy Everywhere?
  • Why do I keep getting SIP 486 errors?
Full documentation Getting started CallOrbit home

Frequently asked questions

  • What does SIP 486 Busy Here mean? — SIP 486 Busy Here indicates that the called party is busy and cannot take the call at this time. The callee has explicitly rejected the call because they're on another call or have manually rejected it.
  • How is SIP 486 different from SIP 600 Busy Everywhere? — SIP 486 Busy Here means the specific endpoint is busy, while SIP 600 Busy Everywhere means all possible endpoints for that user are busy. 486 is endpoint-specific, 600 is user-wide.
  • Why do I keep getting SIP 486 errors? — Common causes include: the user is already on a call, Do Not Disturb is enabled, call forwarding is misconfigured, or the device is offline. Check the user's status and device settings.

Learn what SIP 486 Busy Here means, common causes, and how to troubleshoot busy signal issues.

In this article

  1. What is SIP 486?
  2. Common causes
  3. Troubleshooting steps

What is SIP 486?

SIP 486 Busy Here is a response code that indicates the called party is busy and cannot take the call at this time. This is different from SIP 600 Busy Everywhere, which means all possible endpoints for that user are busy.

Common Causes

  • The user is already on another call
  • Do Not Disturb (DND) is enabled
  • Call forwarding is misconfigured
  • The device is offline or not registered
  • The user manually rejected the call

Troubleshooting Steps

  1. Check if the user is on another call
  2. Verify DND is disabled
  3. Check call forwarding settings
  4. Make sure the device is registered with the SIP server
  5. Try calling from a different number to rule out caller-specific issues

FAQ

What does SIP 486 Busy Here mean?

SIP 486 Busy Here indicates that the called party is busy and cannot take the call at this time. The callee has explicitly rejected the call because they're on another call or have manually rejected it.

How is SIP 486 different from SIP 600 Busy Everywhere?

SIP 486 Busy Here means the specific endpoint is busy, while SIP 600 Busy Everywhere means all possible endpoints for that user are busy. 486 is endpoint-specific, 600 is user-wide.

Why do I keep getting SIP 486 errors?

Common causes include: the user is already on a call, Do Not Disturb is enabled, call forwarding is misconfigured, or the device is offline. Check the user's status and device settings.