Hi - the best way would be to use RealPresence Media Suite. With Media Suite a user can easily start or create a live-broadcast from its virtual meeting room on the RMX. It is also possible to use the "recording link" feature in the RMX to automatically initiate a recording or live broadcast. After the live-broadcast, the recordings is also automatically available via the user portal.
What do you mean with live media services network? is that something which exists already internally?
Media Suite can be integrated into external Content Delivery Networks for broadcast distribution (Akamai, Verizon Edgecast).
Furthermore, an internal CDN can be created with Media Suite.