I am starting this discussion area to help answer any questions related to Verizon's IP Trunking services for Cisco VoIP products.
I work with the Verizon engieering teams to help with Interop issues between Cisco and Verizon's VoIP network.
Please feel free to ask any questions related to design, implementation, and trobleshooting a Cisco deployment using Vz IP Trunking.
Found the solution by upgrading IOS to 124-22.YB8 that supports
voice class sip-profiles xxx
request INVITE sip-header Remote-Party-ID modify "screen=no" "screen=yes"
Applied this to the dial-peer - works fine now.