Design Considerations for Session Initiation Protocol (SIP) Overload Control, August 2011
- Canonical URL:
- File formats:
- V. Hilt
- soc (rai)
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Overload occurs in Session Initiation Protocol (SIP) networks when SIP servers have insufficient resources to handle all SIP messages they receive. Even though the SIP protocol provides a limited overload control mechanism through its 503 (Service Unavailable) response code, SIP servers are still vulnerable to overload. This document discusses models and design considerations for a SIP overload control mechanism. This document is not an Internet Standards Track specification; it is published for informational purposes.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.