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2 Model 57i CT IP Phone User Guide
Introduction
Introduction
This 57iCT IP telephone has all the features of a regular business phone,
allowing you to make and receive calls, transfer, conference and more. The
57i CT IP telephone provides communications over an IP Network using
the SIP IP telephony protocol.
Phone Features
• 11 line graphical LCD screen (144 x 128 pixels) with white backlight
• 12 multi-functional softkeys
— 6 Top Keys: Programmable static softkeys
(up to 10 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*
Cordless Handset Features
• 5 line backlit display screen
• 2 multi-functional softkeys
• Programmable function key supports up to 14 functions
• Vibration Alerter
• Headset Jack
• Desk charging stand
*
Availability of feature dependant on your phone system or service provider.
Requirements
The 57i CT IP Phone requires the following environment:
• SIP-based IP PBX system or network installed and running with a SIP
account created for the 57i phone.
• Access to a Trivial File Transfer Protocol (TFTP), File Transfer Protocol
(FTP), Hypertext Transfer Protocol (HTTP) server, or Hyper Text Trans-
fer Protocol over Secure Sockets Layer (SSL) (HTTPS).
• 802.3af Ethernet/Fast Ethernet LAN
• Category 5/5e straight through cabling
• Power over Ethernet (PoE) inline power injector (optional accessory -
necessary only if your network provides no inline power and if you do
not use the IP Phone’s power adapter).