[cisco-voip] UCM <-> Gateway: H323 vs. SIP

[Carter, Bill]

I am preparing for a UCM 7.1(3) install. The deployment includes Zoom
CallREC call recording. We will use SPANless recording which utilizes a
SIP trunk between UCM and Zoom. A majority of the calls will be
recorded. I am wondering if there are advantages to using SIP from UCM
to the Gateways. I haven't studied the UCM/SIP integration with gateways
since studying for the old CCIE Voice with CM 4.1.

I am looking for CCO documents comparing H323 and SIP as it relates to
UCM features and functionality, and any experiences from the community
using SIP for the UCM to Voice Gateway connections.

Thanks much