182 1xx Provisional RFC 3261
SIP 182 Queued
The called party is temporarily unavailable, and the server has queued the call instead of rejecting it.
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Common causes
- Call queues or ACD systems holding the call until an agent is free.
How to fix it
- Informational. Check queue sizing if callers wait too long.
Seeing 182 on calls through a router or firewall? Check that SIP ALG is disabled. It causes a surprising number of SIP errors. Read why.
About 1xx responses
The request was received and is being processed. The call is not finished yet.