What does the 29% ReviewGist Score mean?
Grandstream GXP2020 is a not recommended buy as per the ReviewGist score of 29%. This is because even though the Grandstream GXP2020 has garnered excellent reviews from most reviewers, it might not come with the latest specifications as it is a relatively very old model.
- Excellent ratings from over 1 review sources with an average rating of 4.0 stars. Top review sources include onsip.com(4.0 stars).
- Released 7 years 9 months ago (Apr 2007) which makes it one of the very old ip phones in the market.
|Standards and Protocols|
|Codec||G.723.1, G.722, G.168 (Echo Cancellation), VAD (Voice Activity Detection), CNG (Comfort Noise Generation), Dynamic Jitter Buffer, G.729AB, G.711a|
|Protocol||TCP, UDP, TFTP, RTP, RTCP, HTTP, DHCP, ICMP, PPPoE, ARP, SNTP|
|Supplementary Service||Call Transfer (H.450.2), Call Hold (H.450.4), Call Waiting (H.450.6)|
|VoIP Signaling Protocol||SIP|
|Audio / Video Interfaces||Headset/ Handset: RJ 22|
|Networking Connectivity||1 x RJ 45 - 10/100 Base-TX (Ethernet), 1 x PBX Interface (RJ 11)|
|Display and Controls|
|Buttons||Redial, Mute, Headset / Hand Free, Hold, Transfer, Conference|
|Additional Features||Phone Book, Hand Free Mode, Built-in NAT Router, Call History, Speaker, Voice Mail|
|Power Source||AC-DC Power Adapter|
|Release Date||April, 2007|
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