Outage in Retreaver

Calls coming to Retreaver from Telnyx through SIP might have issues

Minor
September 17, 2025 - Started 1 day ago
Official incident page

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Outage Details

1. SIP invite is received from publishers using Telnyx. 2. Retreaver responds to the INVITE with 200 OK and continues responding for the next 30 seconds, but Telnyx SIP endpoint does not acknowledge the respons. This is an early sign that calls might be dropping. In SIP: When the caller (UAC) gets a 200 OK (INVITE), it must reply with an ACK. The callee (UAS) will keep retransmitting 200 OK until it receives that ACK. We advice clients to get in touch with publishers using Telnyx and platforms using Telnyx (not Retreaver) and to work with them to monitor the traffic.
Components affected
Retreaver Call Handling
Latest Updates ( sorted recent to last )
IDENTIFIED 1 day ago - at 09/17/2025 02:39PM

We can not implement a fix for this on our side. Waiting for a resolution from Telnyx

MONITORING 1 day ago - at 09/17/2025 02:38PM

A fix has been implemented and we are monitoring the results.

INVESTIGATING 1 day ago - at 09/17/2025 01:48PM

1. SIP invite is received from publishers using Telnyx.
2. Retreaver responds to the INVITE with 200 OK and continues responding for the next 30 seconds, but Telnyx SIP endpoint does not acknowledge the respons.

This is an early sign that calls might be dropping.

In SIP:

When the caller (UAC) gets a 200 OK (INVITE), it must reply with an ACK.
The callee (UAS) will keep retransmitting 200 OK until it receives that ACK.

We advice clients to get in touch with publishers using Telnyx and platforms using Telnyx (not Retreaver) and to work with them to monitor the traffic.

Latest Retreaver outages

Detected an increase in errors on web portal - 17 days ago
Calls moving through Telnyx numbers may have connection issues at the moment - about 1 month ago
Investigating some RTB calls not showing up in reporting - about 2 months ago
Experiencing delays on reporting - about 2 months ago
Identified an issue impacting a subset of our users when visiting the reporting page - 5 months ago

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