On 2023-07-26 17:43, Paul Timmins via VoiceOps wrote:
I wouldn't be surprised to see carriers dumping these calls via a GSM gateway,
this is really common in europe with gray routes. It'd explain why you get
weird cellular voicemail, if they sent the number to the cell phone wrong to
actually dial out.
I've heard of this!
In one instance, the call would come through every one in a dozen or so
attempts. And it would often have the wrong calling number. Generally
belonging to a cell provider. Audio was not great and there was
noticeable latency. The call would only go for a few minutes before
dropping.
I have on a couple occasions had the opportunity to have both phones
sitting side-by-side. A phone from a telco with "unlimited" shady long
distance, and a phone from my telco. I kept detailed logs of each call,
with audio recordings of the fake voicemails, fake person talking
through static, and so on. They only have so many fake recordings, so
they eventually repeat themselves. We packaged up the logs and the
audio files and sent it all to our PUC. Got fixed real fast. But just
for that one company.
_______________________________________________
VoiceOps mailing list
VoiceOps@voiceops.org
https://puck.nether.net/mailman/listinfo/voiceops
