[Resolved] SIP Server Urgent Maintenance

Mon, 27 Jan 2025 23:30:00 +0000

Tonight we will perform an urgent maintenace on the SIP Server to fix internal call routing for EIS for Carrier customers and to increase the antiflood limits to accomodate higher traffic customers.

[Resolved] DSS Call Routing Errors

Wed, 08 Jan 2025 06:02:18 +0000

Call routing for all DSS services was broken this morning at 7:02 AM for SIP Trunks and Webex Calling.

We have since identified the issue and have deployed a fix.

As of 9:05 AM calls are being correctly routed but we are keeping the services monitored.

Post Mortem

Affected Services:

Service	Impact
DSS	MAJOR

Affected Products:

Product	Impact
SIP Trunk	MAJOR
Webex Calling	PARTIAL

Start Date of Incident:

08/01/2025 07:02 CET

Resolution Date of Incident:

08/01/2025 09:05 CET

Summary of Incident:

Calls were not being correctly routed by the platform causing errors for both inbound and outbound calls.

The cause was a bug in a specific software version of the RTP Server that caused an OOM error.

Mitigation Steps:

Restarted the affected services

Resolution Steps:

Update the RTP Server to permanently fix the issue

Action Items:

Improve our alerting system so that in the future we can take proactive action in similar cases
Change SIP Server responses to SIP OPTION so that in similar cases customer endpoints will be able to correctly fail-over to the secondary node

Webex-Calling on EIS Status