[asterisk-biz] DID carrier that supports forwarding of RDNIS info / Any out there?

[mjoyner at EWC.EDU]

I am looking for a DID carrier that supports passing to me any
rdnis/call forwarding details passed from my Centrex DMS-100 to them
back to me via standard sip headers.

This is needed to be able to properly implement a sip trunked voice mail
solution for my centrex dms-100. Thanks!

Thanks!