А что мешает попробовать? В мануале прописано, что обе платы могут работать в режиме точка-точка с инкапсуляцией GFP.
VC12–Xv GFP encapsulation
The Metropolis® AM and Metropolis® AMS support virtual concatenation of Lower Order SDH VC-12 as inverse multiplexing technique to size the bandwidth of a single internal WAN port for transport of encapsulated Ethernet and Fast Ethernet packets over the SDH/SONET network. This is noted VC12-Xv, where X = 1...5 when using the X4IP-V2 option card and X = 1...63 when using the X8PL option card.
VC3–Xv GFP encapsulation
The Metropolis® AM and Metropolis® AMS support virtual concatenation of Lower Order SDH VC-3 as inverse multiplexing technique to size the bandwidth of a single internal WAN port for transport of encapsulated Ethernet and Fast Ethernet packets over the SDH/SONET network. This is noted VC3–Xv, where X = 1,2 (SDH).