On the Oracle Communications SBC, init-timer corresponds to RFC 3261 T1 (default 500 ms) and max-timer to T2 (default 4000 ms); the UDP retransmission interval doubles after each retransmission.
Checked 2026-10-02
- Vendor
- Oracle
- Product
- Oracle Communications Session Border Controller
- Subsystem
- global SIP timers
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 9.1.0
- Checked
- 2026-10-02
Sources
- Global SIP Timers — Oracle · tier 2 current vendor documentation · Global SIP Timers, parameters init-timer and max-timer
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting SIP 408 Request Timeout and calls that get no response: source note sip-408-timeout-troubleshooting-oracle-init-timer-t1. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-408-timeout-troubleshooting-oracle-init-timer-t1
BibTeX
@misc{warmtransfer-claim-sip-408-timeout-troubleshooting-oracle-init-timer-t1,
title = {Troubleshooting SIP 408 Request Timeout and calls that get no response: source note sip-408-timeout-troubleshooting-oracle-init-timer-t1},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-408-timeout-troubleshooting-oracle-init-timer-t1},
note = {Source note sip-408-timeout-troubleshooting-oracle-init-timer-t1, checked 2026-10-02}
}