Best Grandstream IP Phones with ICMP

Positives: Protocol: ICMP,PPPoE,ARP,TCP,UDP,TFTP,RTP,RTCP,HTTP,DHCP, Codec: G.723.1,G.722,G.729AB,G.726,G.711u/A, Additional Features: Mute,Volume Control,Ringtones: True Tones,Phone Book,Speaker,DTMF Tone Detection, Buttons: Conference

Positives: Protocol: ICMP,PPPoE,NAT,ARP,SNTP,TCP,UDP,TFTP,RTP,RTCP,HTTP,DHCP, Codec: G.723.1,G.729A,G.168 (Echo Cancellation),VAD (Voice Activity Detection),CNG (Comfort Noise Generation),G.729AB,G.711u,G.711a, Networking Connectivity: 2 x RJ 45 - 10/100 Base-TX (Ethernet), Additional Features: Voice Mail,Hand Free Mode,Speaker

Positives: Protocol: RTP,RTCP,HTTP,DHCP,ICMP,PPPoE,NAT,ARP,TCP,UDP, Codec: G.711,G.722,G.168 (Echo Cancellation),G.729,G.723, Networking Connectivity: 2 x RJ 45 - 10/100 Base-TX (Ethernet), Buttons: Mute,Hold,Transfer,Conference

Positives: Protocol: RTCP,UDP,HTTP,DHCP,TFTP,ICMP,PPPoE,ARP,SNTP,TCP,RTP, Codec: CNG (Comfort Noise Generation),G.722,Dynamic Jitter Buffer,G.729AB,G.168 (Echo Cancellation),G.711a,G.723.1,VAD (Voice Activity Detection), Networking Connectivity: 1 x PBX Interface (RJ 11),1 x RJ 45 - 10/100 Base-TX (Ethernet), Additional Features: Speaker,Hand Free Mode,Voice Mail,Built-in NAT Router,Phone Book,Call History

Positives: Protocol: DHCP,ICMP,PPPoE,ARP,TCP,UDP,TFTP,RTP,RTCP,HTTP, Codec: G.722,G.168 (Echo Cancellation),VAD (Voice Activity Detection),CNG (Comfort Noise Generation),G.711u,G.711a,G.723.1,G.729A, Networking Connectivity: 2 x RJ 45 - 10/100 Base-TX (Ethernet), Additional Features: Phone Book,Call History