1) Physical EIA/TIA-232, EIA/TIA-449, ITU-T V-Series, 1.430, layer 1.431, Pots, PDH, Sonet/SDH, Pon, OTN, DSL, IEEE 802.3, IEEE 802.11, IEEE 802.15, IEEE 802.16, IEEE 1394, ITU-T G.hn PHY, USB, Bluetooth, Hubs 2) Datalink ATM, SDLC, HDLC, Arp, CSlip, Slip, GFP, Plip, layer IEEE 802.3, frame relay, ITU-T G.hn DLL, PPP, X.25, network switch 3) Network IP (IPv4 & IPv6), ICMP, IPsec, IGMP, IPX, AppleTalk layer 4) Transport TCP, UDP, SCTP, DCCP, SPX layer 5) Session Named pipes, NetBios, Sap, L2TP, PPTP, SPDY layer 6) Mime, XDR, TLS, SSL Presentation layer 7) NNTP, Sip, SSI, DNS, FTP, Gopher, HTTP, NFS, NTP, Application SMPP, SMTP, SNMP, Telnet, DHCP,
Netconf, RTP, etc.