Are the RRC boxes also Route Servers?

No. A Route Server is usually used at an Internet Exchange Point, eliminating the need of managing a full mesh of EBGP sessions. It reduces operational costs for maintenance and/or configuration at an Internet Exchange Points. Our Remote Route Collectors only gather BGP data from peers, which is then transferred to and centrally stored at the RIPE NCC in Amsterdam. With the notable exception of the RIS Beacons, the RRC boxes do not forward or announce BGP routing information to peers.