There are number of ways you can connect a V-series panel over a IP network back to the main matrix
IVC-32 card Using an Omega or Median matrix fitted with a IVC-32 card, you can connect V-series panels (directly) over a IP network back the central matrixThe IVC-32 card connects to the  your IP network using its LAN port. The V-series panels have a LAN port on their rear and connect directly to the IP network.The V-series is programmed with the IP address of the IVC-32 card and also a User ID / password code as setup in ECS Median (inc VC-32)  <IP network> V-series panelIVC-32 card data sheet http://www.clearcom.com/product/digital-matrix/interface-card/ivc-32Note: The IVC-32 card can support any mixture up to 32x V-series (hardware panels) or virtual panels running on a PCNote: We can only use IVC-32 cards in a Median / Omega matrix 
Voice2 IP interfaceUsing any Eclipse matrix (Omega / Median / Pico) connected to the standard Voice2 interface, V-series panels can be connected back to their central matrix over IPThe Voice2 IP interface is a 4 channel IP converter unit. Connect 1 Voice2 unit at the matrix end. The matrix connects to the Voice2 using CAT5 cable from its MVX ports which have been preconfigured as Panel ports in ECSThe central Voice2 unit connects to the IP network via it LAN #1 port At the remote location there is a 2nd Voice2 unit . The V-series panels (up to 4) connect to Voice2 unit using CAT5 cableThe remote Voice2 unit connects to the IP network via it LAN #1 port and is programmed with the IP address of the central Voice2 unitMedian (inc MVX)  <> Voice2 <IP network> Voice <> V-series panels .Voice2 data sheet http://www.clearcom.com/product/ip-communications/voice-and-soft-voice/voice2  Note: Voice2 units cannot connect to a IVC-32 card, they can only connect to another Voice unit. Voice2 units can be used with any matrix type (Drake 4000, Matrix +3, Eclipse)