1. M/W : Fujitsu, Alcatel, Nera, DMC, NEC

2. DWDM : Nortel(1600G, 5200, 6500)
     Lucent (OLS80G, 400G)
     Ciena Metro DWDM
     LETEK Metro DWDM      

3. TDM10G : Nortel, Lucent

4. 2.5G : Lucent(FT-2000, ADM-16)
     Nortel(OC-48,3500)
     Alcatel, Marconi, 삼성

5. 155M : Nortel, Marconi, ECI, 삼성(아미텔), LG

6. DOTS-N : Symmitric