Grandstream IP Phone GXP280 with single line

Protocols/Standards

SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP, ARP/RARP, ICMP, DNS (A record and SRV), DHCP, PPPoE, TFTP, NTP, STUN, SIMPLE

Network Interfaces

Dual switched 10/100 Mbps

Graphic Display

128 x 32 pixel graphic LCD

Feature Keys

3 XML dynamic context sensitive soft keys, 3 navigation/menu/volume keys, 7 dedicated function keys for: HOLD, SPEAKERPHONE, SEND, TRANSFER, CONFERENCE, FLASH and HEADSET

Voice Codec

Support for G.723.1, G.729 A/B, G.711 u/a-law, G.726, G.722 (wide-band), GSM and iLBC, in- band and out-of-band DTMF (in audio, RFC2833, SIP INFO)

Telephony Features

Hold, Mute, Transfer, Forward, 3-way Conference, Downloadable Phone Book (XML, LDAP up to 200 items), XML Customization of Screen, Call Waiting, Call Log, Off-hook Auto Dial, Auto Answer, Click-To-Dial, Downloadable Ringtones, Server Redundancy and Fail-over Support

Headset Jack

2.5mm and RJ22 headset jack

QoS

Layer 2 (802.1Q, 801.2p) and Layer 3 (ToS, DiffServ, MPLS) QoS

Security

User and administrator level passwords, MD5 and MD5- sess based authentication, AES based secure configuration file, SRTP

Multi-language

English, Spanish, French, German, etc

Upgrade/Provisioning

Firmware upgrade via TFTP/HTTP, mass deployment using central secure provisioning file

Power

Universal power adaptor (Input: 100-240VAC 50-60Hz, Output:+5VDC, 1.2A, UL Certified) included

Physical

Dimension: 168mmx200mmx89.5mm
Unit weight: 0.62KG
Package weight: 0.725KG

Temperature/Humidity

32-104°F/ 0-40 °C, 10-90% (non-condensing)

Compliance

FCC,CE,C-Tick