Voice Codecs
G.711 (A-law and m-law), G.722.2, G.722, G.729ab, ILBC, iSAC, OPUS, Narrowband Opus
Retea
Cisco Discovery Protocol
DHCP (RFC 2131)
DHCP VLAN Options
DNS: A record (RFC 1706), SRV record (RFC 2782)
Global Discovery Services (GDS)
HTTPs Support for XSI Services
IPv4 (RFC 791)
IPv6 (RFC 2460): System Interoperability Testing Required
LLDP
MAC address (IEEE 802.3)
NAPTR
NAT, STUN
Peer Firmware Sharing
SIP support (RFC3261 and companion RFCs)
SNTP (RFC 2030)
TR.69 Provisioning: System Interoperability Testing Required
UDP and TCP
Voice and Video Priority Configuation
Zero Touch Provisioning