Kemt mentioned that it has since cleared up for him. Are the rest of your customers also now working, without the VPN workaround?
-- Nathan From: Jim Rodgers [mailto:jrodg...@telexent.com] Sent: Friday, March 8, 2024 9:14 AM To: Nathan Anderson Cc: voiceops@voiceops.org Subject: Re: [VoiceOps] One Way Audio - Frontier Comm (Los Angeles area) We just set up a VPN from one of our customers to our data center and the audio issue is gone as the traffic is going over the VPN. So VPN does resolve the problem. Jim On Fri, Mar 8, 2024 at 07:45 Nathan Anderson via VoiceOps < voiceops@voiceops.org> wrote: Assuming I understood the original problem description accurately, I don't see how a lossy trunk somewhere could explain 100% loss of *just* RTP and only in *one* specific direction with *zero* impact to any other internet traffic. You'd think that at least some RTP frames would manage to squeak by every once in a while, and that these users would have complaints about other non-voice-related things also not working as well. Of course, the TLS would only make it impossible for the RXing carrier to peer into the SIP signalling to see details about the RTP session set-up. So if they're doing something more brain-dead to UDP in general, TLSing the SIP isn't going to work around that. Taking one of your affected customers and encapsulating the whole enchilada -- SIP, RTP, and all -- within a VPN would actually be a pretty interesting experiment... -- Nathan From: VoiceOps [mailto:voiceops-boun...@voiceops.org] On Behalf Of Jim Rodgers via VoiceOps Sent: Friday, March 8, 2024 7:09 AM To: Mike Hammett Cc: voiceops@voiceops.org Subject: Re: [VoiceOps] One Way Audio - Frontier Comm (Los Angeles area) We use SIP TLS. I don't think they're intentionally blocking voice traffic, I think there's something broken inside their network that needs to be fixed (lossy link somewhere?). The issue is getting anyone there to recognize the issue and want to fix it. Jim On Fri, Mar 8, 2024 at 5:32 AM Mike Hammett <voice...@ics-il.net> wrote: I don't trust last mile networks to reliably deliver SIP calls. I usually end up putting them into VPNs, TLS, etc. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ From: "Jim Rodgers via VoiceOps" <voiceops@voiceops.org> To: voiceops@voiceops.org Sent: Thursday, March 7, 2024 11:16:23 AM Subject: [VoiceOps] One Way Audio - Frontier Comm (Los Angeles area) Beginning early yesterday, we're seeing dropped voice rtp traffic to some of our business customers in the Los Angeles metro area on Frontier Comm broadband fiber. The voice udp stream is leaving our data center and never making it to the Frontier fiber customer. It's not all of our customers, only random ones. We've sniffed the traffic on our side and see the voice rtp stream leave our data center but then sniffing on our customer's side the traffic never arrives (multiple Frontier fiber customers with this issue, not just one). Switching the customer over to an alternate Internet connection resolves the issue. Frontier frontline customer support doesn’t get it and they just want to roll a tech out for an issue that’s deeper inside their network. We have packet captures of both sides (our DC and your customer) showing the voice rtp stream leaving our DC and never showing up at the fiber customer. This doesn’t seem to be affecting every fiber customer in the Frontier footprint, it just seems to be random customers. Anyone else experiencing this issue? Any thoughts on who to contact on the Frontier side to get it resolved and/or get some eyes on it? Thanks for the help. Jim _______________________________________________ VoiceOps mailing list VoiceOps@voiceops.org https://puck.nether.net/mailman/listinfo/voiceops _______________________________________________ VoiceOps mailing list VoiceOps@voiceops.org https://puck.nether.net/mailman/listinfo/voiceops
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