The answer is Yes, it can provide an SSCP component, but under specific conditions that are more legacy based than the modern SNA over IP connectivity.
The LUA API, documented in the LUA Programmers manual (https://www.ibm.com/support/pages/communications-server-data-center-deployment-linux-library) has a "Primary LUA" interface that will drive a SSCP session, like VTAM. The restriction is that this is for non-APPN (no DLUR/DLUS connections). So, currently, it is for legacy SNA over Ethernet (LLC2, IEEE 802.3 SNA) connections. The purpose is mostly for providing test capabilities, or a pseudo-mainframe presence on a network. Using this feature, one connects a downstream SNA device over Ethernet to the MAC address of the Comm. Server who has a port definition for the interface that will manage connections as a Primary LU (SSCP). The level of SSCP (level 4 or 5 ) is dependent on the code that drives the LUA interface.