Grandstream GXP2120 HD Enterprise 4-line PoE IP Phone

The Grandstream GXP2120 IP Phone is a next generation enterprise grade IP phone that features 6 lines, a generous 320 x 160 backlit graphical LCD, 4 XML programmable context-sensitive soft keys, 7 XML programmable BLF extension keys, dual network ports with integrated PoE and 5-way conferencing.

The Grandstream GXP2120 IP Phone delivers superior HD audio quality, rich and leading edge telephony features, personalized information and customizable application service, automated provisioning for easy deployment, advanced security protection for privacy and broad interoperability with most 3rd party SIP devices and leading SIP/NGN/IMS platforms.

It is a perfect choice for enterprise users looking for a high quality, feature rich multi-line executive IP phone with advanced functionalities and performance.

Feature Highlights

• Large 240x120 pixel backlit graphical LCD display with up to 8 level grayscale
• Dual switched auto-sensing 10/100Mbps network ports with integrated PoE
• Large phonebook (up to 2,000 contacts) and call history (up to 2,000 records)
• 4 dual-colour line keys (with 4 SIP accounts), up to 5-way conference (max 4 concurrent calls), BLF (Busy Lamp Field) extension keys
• 3 XML programmable context-sensitive soft keys, a desktop stand to allow 2-angle positions
• HD Wideband audio, superb full-duplex hands-free speakerphone with advanced acoustic echo cancellation and excellent double-talk performance
• Automated personal information service (e.g., local weather, stock, currencies, RSS news, etc), personalised music ring tone/music ring back tone/music -on-hold using Internet music streaming or local music files, flexible customisable screen content & format using XML, and advanced Web and enterprise applications integration (pending)
• RJ9 and 2.5mm jacks for professional and casual use

Protocols/Standards

• SIP RFC3261
• TCP/IP/UDP
• RTP/RTCP
• HTTP/HTTPS
• ARP/RARP
• ICMP
• DNS (A record, SRV, NAPTR,)
• DHCP
• PPPoE
• TELNET
• TFTP
• NTP
• STUN
• SIMPLE
• TR-069
• 802.1x
• IPV6 (pending)

Feature Keys

• 4 line keys with dual-colour LED and 4 independent SIP accounts
• 18 programmable BLF extension keys with dual-colour LED
• 3 XML programmable context sensitive soft keys
• 5 navigation/menu/volume keys, 11 dedicated function keys for:
  • Hold
  • Speakerphone
  • Send/Redial
  • Transfer
  • Conference
  • Mute
  • Headset
  • Intercom/Paging
  • Do-Not-Disturb
  • Phonebook
  • Message (With Led Indicator)

Voice Codec

• Support for:
  • G.723.1
  • G.729A/B
  • G.711u/a law
  • G.726
  • G. ...