Best IP Phones - Power over LAN / IEEE 802.3 af / PoE Power Source, Message Waiting Indication (H.450.7) Supplementary Service

3 Cisco

7 IP Phone

6 G.711a 6 G.729A 5 G.711u 5 VAD (Voice Activity Detection) 3 CNG (Comfort Noise Generation)

7 TFTP 6 DHCP 5 TCP 4 HTTP 4 UDP 3 ARP

6 IEEE 802.1p/Q 5 ToS 5 VAD 3 DiffSer 3 RTCP Monitoring

7 Message Waiting Indication (H.450.7) 6 Call Hold (H.450.4) 5 Call Waiting (H.450.6) 4 Call Transfer (H.450.2) 3 Call Pick up (H.450.5) 3 Name Identification (H.450.8)

5 Speaker 4 Voice Mail