# Telnyx: Upcoming TLS Certificate renewals for SIP Trunking Signaling - US and EU regions

- Provider: [Telnyx](https://outages.cc/telnyx.md)
- Type: Maintenance
- State: scheduled
- Worst impact: Maintenance
- Started: 2026-10-27 16:11 UTC
- Official update: https://status.telnyx.com

## Updates from Telnyx

### scheduled, 2026-11-01 17:18 UTC

Our Telephony Engineers will perform maintenance on our inbound SIP proxy servers in the US ([sip.telnyx.com](http://sip.telnyx.com)) and Europe ([sip.telnyx.eu](http://sip.telnyx.eu)) regions. No disruption to calls or SIP signaling is expected during this maintenance. During this maintenance, our TLS certificate for each proxy server will be renewed; the four proxy servers will get the update on separate days. These important changes will happen. - We'll switch Certificate Authority from Digicert to LetsEncrypt (which means that the entire certificate chain will be changed). - The "clientAuth" EKU is being deprecated, which may affect customers who use mTLS (mutual TLS) for SIP signaling. This change may be important for any customer who has our old (current) TLS certificate or root-CA certificate (or chain) loaded into an SBC/appliance/phone. A notification was sent to customers earlier this year (21st July, subject "Action may be required: TLS certificate changes for Telnyx SIP pro