Source note · SIP OPTIONS pings and trunk keepalives
RFC 5626 says the upper bound for CRLF keepalive intervals should be 120 seconds, with 95 seconds as the lower bound.
Checked 2026-09-24
- Vendor
- IETF
- Product
- SIP
- Subsystem
- SIP Outbound keepalive
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 5626 (October 2009)
- Checked
- 2026-09-24
Sources
- RFC 5626: Managing Client-Initiated Connections in the Session Initiation Protocol (SIP) — IETF / RFC Editor · tier 1 standards and regulators · Section 4.4.1
Cite this note
APA
WarmTransfer. (2026, September 24). SIP OPTIONS pings and trunk keepalives: source note sip-options-keepalive-rfc5626-crlf-interval. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-options-keepalive-rfc5626-crlf-interval
BibTeX
@misc{warmtransfer-claim-sip-options-keepalive-rfc5626-crlf-interval,
title = {SIP OPTIONS pings and trunk keepalives: source note sip-options-keepalive-rfc5626-crlf-interval},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-options-keepalive-rfc5626-crlf-interval},
note = {Source note sip-options-keepalive-rfc5626-crlf-interval, checked 2026-09-24}
}