Aastra Telecom 57I CT User Manual
IP Phone Models
RN-001029-00, Release 2.0.2, Rev 02
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.
your computer.
•
Inline power support (based on 802.3af standard) which eliminates power
adapters.
adapters.
•
AC power adapter (included)
•
Enhanced busy lamp fields*
•
Set paging*
*Availability of feature dependant on your phone system or service provider.