Source note · SIP 503 and trunk out-of-service failures
AudioCodes Proxy Hot Swap is disabled by default; when enabled, a response listed in the SBC Alternative Routing Reasons Set moves the request to the next proxy, and if no proxy is available the SIP message fails.
Checked 2026-09-25
- Vendor
- AudioCodes
- Product
- Mediant SBC
- Subsystem
- Proxy Set redundancy
- Deployment
- on-premises, cloud-hosted
- Region
- not restricted
- Release range
- User's Manual 7.4
- Checked
- 2026-09-25
Sources
- Configuring Proxy Sets - Mediant Software SBC User's Manual Version 7.4 — AudioCodes · tier 2 current vendor documentation · Proxy Sets table, parameters 'Proxy Hot Swap' and 'Redundancy Mode'
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 503 and trunk out-of-service failures: source note sip-503-trunk-failures-ac-hot-swap. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-503-trunk-failures-ac-hot-swap
BibTeX
@misc{warmtransfer-claim-sip-503-trunk-failures-ac-hot-swap,
title = {SIP 503 and trunk out-of-service failures: source note sip-503-trunk-failures-ac-hot-swap},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-503-trunk-failures-ac-hot-swap},
note = {Source note sip-503-trunk-failures-ac-hot-swap, checked 2026-09-25}
}