486
4xx Client error, RFC 3261
SIP 486 Busy Here
SIP 486 Busy Here means the person you called is busy: on another call, or they pressed reject on a phone that answers with busy.
- Who sends it
- The called side
- When
- Placing the call (INVITE)
- Retry?
- Later, by calling again.
- The caller hears
- A normal busy tone.
PBXYour phone or PBX
SIPThe SIP trunk
☎The called sidesends 486
What causes 486, and how to fix it
486 is a normal busy signal: the call reached the destination and the line was engaged. It is not a configuration problem.
- 1Most common
The called person is already on a call.
Call again later, or leave a message by another channel.
- 2Most common
The person rejected the call, and their phone reports a rejected call as busy.
Nothing to fix on your side. Some phones send 486 for reject, others 603.
- 3Sometimes
When you call your own extension, it has reached its limit on calls at the same time.
Check the call limit or call waiting setting on that extension or SIP login.
- 4Rare
Some systems send 486 when a route or account limit is reached.
If every call gets 486, check your own limit on calls at the same time.
SIP/2.0 486 Busy Here
Via: SIP/2.0/UDP 203.0.113.10:5060;branch=z9hG4bK-74bf9
Call-ID: [email protected]Not to be confused with
486, 600, 480 or 603?
FAQ
SIP 486 questions
Am I charged for a busy call?
No. A busy call is never answered, and on LinkedSIP only answered calls are charged.
Why do I always get busy for one number?
The person may be on a call, may have reject set for unknown numbers, or their phone may report rejected calls as busy. Try again later or from another caller ID you are allowed to use.
Not 486? Look up another code.
The full list: SIP response codes. 486 again and again? Check your SIP trunk configuration.