SIP number redundancy between carriers?

[rejackson]

We have a SIP service with a few thousand DIDs. I understand the geo redundancy concept with the same carrier. But can another carrier be used to back up the same numbers? Todays Level 3 outage has management searching for backup and I don't know if it is possible to have numbers fail over to another carrier.

Thanks
REJ

 

[wpetilli]

I think it depends on the carrier and what they allow. In doing some minor due diligence with the big carriers like ATT/Verizon they don't failover to other carriers. I've been told the boutique type SIP carriers have much more flexibility, but I don't have concrete info on that.

 

[montyzummer]

You will struggle with this as the one carrier obviously owns your numbers on there platform , so the second carrier can not have your numbers as a back up , ask your main carrier is in a L3 failure can they have all your numbers in a fail over scenario , point to a single DDI at your back up carrier that in turn present to your Kit(obviously this will need to be registered concurrently) , the second carrier may be able to proxy through the sip invite so the call is transparent to your system.

ACSS (UC/SBCE/SM/SME)

Not that they mean a thing anymore , get a brain dump pass the test crash the system.