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RN-001029-00, Rev 01, Release 2.0 5
SIP IP Phone Models 53i, 55i, 57i, 57i CT Release Notes
Model 55i IP Phone
Model 55i SIP IP phone offers the following features:.
• 8 line graphical LCD screen (144 x 75 pixels) with white
backlight
• 12 programmable keys
— 6 Top keys: programmable hard keys
(up to 6 programmable functions)
— 6 Bottom keys: programmable state-based softkeys
(up to 20 programmable functions)
• 4 call appearance lines with LEDs
• Supports up to 9 call lines
• Full-duplex speakerphone for handsfree calls
• Headset support (modular connector)
• Built-in-two-port, 10/100 Ethernet switch - lets you share a connection with
your computer.
• Inline power support (based on 802.3af standard) which eliminates power
adapters.
• AC power adapter (included)
• Enhanced busy lamp fields*
• Set paging*
*Availability of feature dependant on your phone system or service provider.