OCS R2 SIP Trunking

If you have never heard of SIP Trunking, here is a quick high level explanation. OCS R2 includes support for SIP Trunking, and in a nutshell this allows OCS R2, and therefore your R2 users, to have voice interoperability with the public phone system (PSTN) without any IP-PSTN gateways or other PBX equipment. A SIP [...]