Hi Cavagnaro,
I think you’re confused by the difference between agent DNs and routing point DNs.
In case of agent DNs the SIP endpoints are registered on Asterisk side and created as object of type “Extension” in Genesys Configuration. SIP Server issues SUBSCRIBE message for these and Asterisk updates SIP Server with status of these objects using NOTIFY messages then.
On the other hand, routing points are configured as SIP endpoints (=RP in CME) on SIP Server. On Asterisk side, there is a dial plan only that specifies what calls have to be transferred to SIP Server and to what number (=RP on SIP Server).
Please read the chapter “Call Flows” on page 60 of reference guide again and I’m sure you’ll notice the difference now. Especially compare SIP message on figures 45 and 46 with these on figure 47.
Hope it helps you
R.