With the feature Cornet NQ interworking with DPNSS1 the gateway board is integrated in OpenScape 4000 Loading, Administration and Dependability concept.

The peripheral board serves as a protocol gateway between Cornet NQ (OpenScape 4000 internal protocol) and DPNSS1 protocol (private network protocol in UK; ISDX; 'Realitis' migration). It works also in transit networks between OpenScape 4000 switches with DPNSS1 switches as transit nodes.

The board loadware translates the CornetN/Cornet NQ protocol into DPNSS1 and vice versa or hides the CornetN/Cornet NQ protocol in DPNSS1 frames for transit function and vice versa (tunneling function). The board also supports conversion of Cornet N into DASS2 protocol for use as a central office interface in the UK .