| Model | GXP2160 |
| Network Protocol | TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS (A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LDAP, TCP-MSRP, SIP over TLS, SRTP, TLS |
| Ethernet Ports | Dual 10/100/1000 Mbps Gigabit Ethernet Ports |
| PoE | IEEE 802.3af Power over Ethernet (PoE) support |
| LCD Display | 4.3 inch 480×272 pixel color display with backlight |
| Programmable Keys | 24 programmable speed dial/BLF keys |
| Line Appearances | 6 line appearances with up to 6 SIP accounts |
| Audio Codecs | G.711µ/a, G.722 (wideband), G.723, G.726-32, G.729 A/B, iLBC, Opus |
| Speakerphone | Full-duplex hands-free speakerphone with advanced acoustic echo cancellation |
| Headset Jack | RJ9 headset jack and EHS support |
| Call Features | Caller ID, call waiting, call transfer, call forwarding, 3-way conference, call park, call pickup, call hold, do not disturb, busy lamp field, intercom, paging, auto-answer, XML customization |
| Security | User and administrator level passwords, MD5 and MD5-sess based authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control |
| Provisioning | TR-069, HTTP/HTTPS/TFTP, provisioning server redundancy support |
| Phonebook | XML/LDAP remote phonebook, local phonebook for up to 2000 contacts |
| Firmware Upgrade | Firmware upgrade via TFTP/HTTP/HTTPS, mass deployment using TFTP/HTTP/HTTPS |
| Power Adapter | Universal power adapter included, input: 100-240V, output: +12V, 1.5A |
| Dimensions | 228mm (W) x 209mm (L) x 81mm (H) |
| Weight | 0.9 kg (2 lbs) |
| Environmental | Operation temperature: 0°C to 40°C, storage temperature: -10°C to 60°C, humidity: 10% to 90% non-condensing |
| Compliance | FCC Part 15 (Class B), CE Mark, UL (power adapter) |
| Warranty | 1-year limited hardware warranty |
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