Aastra 9112i SIP IP Telephone (A1710-0131-10-05) - 3 line backlit display, 4 navigational keys. 2 programmable keys. 11 predefined hard keys including Callers log, Conference, Call Transfer, Redial, Options, Directory, Save, Delete, Speaker/Headset, Mute. Personal directory. 10/100 Mbps Ethernet port. Built-in HTTP server for web administration and maintenance. Enhanced Call Management — Large storage for personal directory, callers log, and redial list. Tight Integration — Support for multiple IP telephony systems including BroadWorks®, Nortel, Sylantro, and Asterisk SIP. Remarkable Audio — Quality speakerphone with excellent voice delivery. Protect Your Investments — Firmware upgrades can be downloaded and installed in the field as standards develop and protocols evolve. Feature availability dependent on IP telephony system.