Grandstream GBX20 5 Colour Screen 77 Program Keys IP Phone

Design
Product type The sub-category of the product.	IP Phone
Handset type	Wired handset
Product colour The colour e.g. red, blue, green, black, white.	Black

Performance
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Password protection type	Supervisor, User

Phone features
Lines quantity The number of lines in the phone.	14 lines
Answering machine The product contains an answering machine where you can leave messages if the phone is unanswered/engaged (busy).
Call log entries	2000
Call waiting
Speed dialling
Call hold
Call forwarding
Conference call
On-hook dialling
Phonebook capacity The number of names/numbers that can be stored in the phonebook of a phone.	2000 entries
Call park
Call pick up
Phonebook sharing
Call transfer
Call history
Customizable wallpaper

Management features
Volume control	Buttons
Number of programmable keys	6
Number of function keys	9
Firmware upgradeable

Display
Display The description of display that can includes display type, resolution, size etc.	TFT
Display diagonal Size of the display for this product, measured diagonally, usually in inches.	12.7 cm (5")
Display resolution The number of distinct pixels in each dimension that can be displayed. It is usually quoted as width × height, with the units in pixels: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels. The higher the number of pixels, the sharper the image.	1280 x 720 pixels

Audio
Speakerphone Device has a microphone and loudspeaker provided separately from those in the handset. This device allows multiple persons to participate in a conversation. The loudspeaker broadcasts the voice or voices of those on the other end of the telephone line, while the microphone captures all voices of those using the speakerphone.
Number of microphones	2
Voice codecs	G.711Mu, G.711alaw, G.722, G.723, G.726, G.729A, G.729B, OPUS, iLBC
Noise reduction

Network
Ethernet LAN An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.
Ethernet LAN interface type The characteristics of the Ethernet LAN interface.	Gigabit Ethernet
Ethernet LAN data rates The different speed levels of the Ethernet LAN connection.	10,100,1000 Mbit/s
Wi-Fi Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.
Wi-Fi standards The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.
Supported network protocols Network protocols tested as compatible with this product e.g. FTP,HTML, POP.	SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, LLDP, LDAP, TR-069, 802.1x, TLS, SRTP, IPV6
Quality of Service (QoS) support
Security algorithms Security algorithms are used to provide authentication, cipher key generation, integrity and radio link privacy to users on mobile networks. The security algorithms supported are the ones that can be used with this product.	256-bit AES, 802.1x RADIUS, MD5, SRTP, TLS
Networking standards The way in which the network is working, e.g. IEEE 802.11a, IEEE 802.11b, IEEE 802.11g.	IEEE 802.1Q, IEEE 802.1p, IEEE 802.3af

Ports & interfaces
Headset connectivity	RJ-9
USB 2.0 ports quantity Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.	1
RJ-9 ports quantity	1
Headphone outputs Number of sockets /ports where headphones are connected.	1
DC-in jack The socket/plug where the DC electricity supply connects to the device.

Certificates
Certification	FCC, CE, RCM
Compliance industry standards List of characteristics that describe methods of compliance to industry-defined standards for the product	FCC: Part 15 (CFR 47) Class B CE: EN55022 Class B; EN55024 Class B;EN61000-3-2; EN61000-3-3;EN60950-1 RCM: AS/ACIF S004; AS/NZS CISPR22/24; AS/NZS 60950.1

Power
Power over Ethernet (PoE) The device supports Power over Ethernet (PoE), which is one of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling. This allows a single cable to provide both data connection and electrical power to devices such as wireless access points or IP cameras.
AC adapter input voltage	100 - 240 V
AC adapter output voltage	12 V
AC adapter output current	1 A

Operational conditions
Operating temperature (T-T) The minimum and maximum temperatures at which the product can be safely operated.	0 - 40 °C
Operating relative humidity (H-H)	10 - 90%
Storage relative humidity (H-H)	10 - 90%
Storage temperature (T-T) The minimum and maximum temperatures at which the product can be safely stored.	-10 - 60 °C

Weight & dimensions
Width The measurement or extent of something from side to side.	263 mm
Depth The distance from the front to the back of something.	210 mm
Height The measurement of the product from head to foot or from base to top.	82 mm
Weight Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.	1.05 kg
Package weight Weight of the packaged product.	1.62 kg

Packaging content
Base station
Handset
Quick start guide Instructions, either online, as a computer program or in paper form, to allow you to set up and start using the product quickly.
Number of handles included The amount of handles, which are the part by which a thing is held, carried or controlled.	1 pc(s)
Cables included	DC
AC adapter included