Try to narrow it down to the carrier that is failing if you can. Helps when you have a big team using diverse carriers. Like all calls to T mobile or Sprint fail but Verizon is ok. We've had this before and had to spoonfeed the problem to the carrier. Eventually, your carrier will work with the upstream or end carrier and get it resolved.
VoIP
Rules
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Be civil. Disagreements of varying intensities will happen, but particularly vitriolic attacks will be pruned from the discussion.
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Do not promote or advertise for any business, service or product unless responding to a specific request for recommendations. This includes recommending a user change providers when they have not indicated they are interested in doing so.
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Do not invite, encourage, or seek help with engaging in unethical or fraudulent activity relating to VoIP, such as call spoofing, robocalling and autodialers, or fraudulent STIR/SHAKEN attestation.
Could definitely be upstream. We had a problem today where calls wouldn’t go through. Searching with our provider the failed calls were all going through a route to Talkie (a sip provider) Took Talkie out of our LCR table and fixed the issue.
I’m just going to wait until til the business is closed tomorrow
Had this problem with Verizon, after MONTHS of inconsistent calling we were able to pin it down to their phased implementation of STIR/SHAKEN and how our calls were presented to them. We had to make some tweaks, and everything went back to normal. Make sure either the FROM, PAID, or CONTACT headers have the IP address of your billed trunkgroup IP address, or add a diverted header to the call from the SBC. Good luck!!
Hey everyone. The ISP (Cincinnati Bell Altafiber) said they "can''t" make their modem a "bridge" That we have to use their modem as our router? I'm so lost. But with this, if their equipment is routing and has a firewall I have no control over what the hell am I to do?