Intermittent Dead air / no audio on siptrunk.com - bcmone

We have received several reports from accounts using calling plans on siptrunk.com / flowroute / nexvortex. This is a carrier side issue and we have escalated to our tier 3 escalation path with bcmone.

We are found that specifically for siptrunk.com these settings changes provide some help

Changing the gateways in use from gw1.siptrunk & gw2.siptrunk to gw4 and gw5 respectively
Disabling the trunk setting Option "PBX delivers audio"

Update from siptrunk.com

Thank you for this information. I have further escalated the matter to our Development and Engineering teams, and they have advised that they are currently aware of internal issues that could potentially be impacting RTP audio traffic and preventing audio packets from passing correctly.

Our teams are actively investigating the issue and reviewing whether the reported symptoms align with the behavior currently being observed internally. At this time, this appears to be the most likely area of focus based on the information available.

We will continue to monitor the situation closely and coordinate with the appropriate teams. As soon as we receive additional findings or confirmation regarding the root cause and resolution, I will provide you with an update promptly.

Thank you for your patience and cooperation while we work through this investigation.

Latest from siptrunk.com / bcmone

Thank you for your patience while we worked through this intermittent audio issue. The root cause was particularly challenging to identify because the affected calls were traversing multiple gateways, making it difficult to isolate a common factor.

After gathering additional call examples from other customers and escalating the matter to our Development team, we determined that the issue originated within our network. An internal loop was causing audio traffic to consume an excessive number of ports, which resulted in the audio disruptions being reported.

Our Development team implemented corrective changes at 1:30 PM EDT, and since those updates were made, customers have reported noticeable improvements in call audio quality. At this time, we ask that you continue to monitor and retest your services and let us know if you experience any further issues so we can confirm the matter has been fully resolved.

Closing incident

We had a relatively quiet morning but we have had some new reports of inbound calling issues that point back to BCM one again. We have captured some examples and sent them back to their team for review.