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Corded Voice Over IP Phones (VoIP)
 
Aastra 57i CT
Includes One Year Manufacturer's Warranty
Item # A1758-0131-10-01
  • 2.4GHz Corded / Cordless VoIP Phone
  • Up To 300,000ft Range
  • Voice Over Internet Protocol (VoIP)
  • Session Initiation Protocol (SIP)
  • Built-In HTTP Server
  • XML Browser
  • Up to 9 Call Appearance Lines
  • Caller ID / Call Waiting
  • Expandable Up To 3 Modules
  • Digital Duplex Speakerphone
  • 144x128 Graphical LCD Display

Aastra 57i CT Includes:
  • 1 Corded Base
  • 1 Cordless Handset / Charger
**Requires A Broadband Internet Connection & Does Not Operate On A Regular (Analog) Phone Line**

Add Extended Warranty (More Info)

$287.99
Aastra 57i CT
Includes One Year Manufacturer's Warranty
Item # A1758-0131-10-01
The Aastra 57i CT offers powerful features and flexibility in a standards based, carrier-grade advanced level expandable IP telephone. With a sleek, elegant design and large 144 x 128 pixel graphical LCD display, the 57i is fully interoperable with leading IP Telephony platforms.

This system offers advanced XML capability to access custom applications and support up to 9 calls simultaneously.

55i CT Features:
  • 2.4GHz Corded / Cordless VoIP Phone
  • Up To 300,000ft Range
  • Digital FHSS Technology
  • Voice Over Internet Protocol (VoIP)
  • Session Initiation Protocol (SIP)
  • XML Browser
  • Up to 9 Call Appearance Lines
  • Caller ID / Call Waiting
  • Expandable Up To 3 Modules
  • Hearing Aid Compatible
  • Wall Mountable
  • Digital Duplex Speakerphone
  • Modular Headset Connector With Built-In Amplifier
  • 144x128 Graphical LCD Display
    Soft White Backlight For User Comfort In Any Lighting Environment
  • LED For Call & Message Waiting Indicator
  • Phone Directory / Dialer
  • 3-Way Conferencing
  • Call Forwarding
  • Intercom
  • Call Transfer
  • Redial
  • Date / Time Display
  • Do Not Disturb
  • AC Powered (Adapter Included)
  • Integrated IEEE 802.3af
    Power Over Ethernet (PoE) Support
  • 2.5mm Headset Jack
  • Belt Clip - Included w/ Brand New Models
  • Multilingual Menu Support (English, French, Spanish, Italian, & German)


VoIP Features:
  • Dual 10/100 Mbps Switched Ethernet Ports
  • Manual or DHCP IP Address Setup
  • Time / Date Synch Using SNTP
  • NAT, QOS, TOS, & Differentiated Services Code Point
  • Built-In HTTP/HTTPS Server
    For Web Administration & Maintenance
  • Voice Codec Support: G.711 µ-law / A-law, G.729
  • Protocols: IETF SIP (RFC3261 & Associated RFCs)


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 Transfer 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 & if You Do Not Use the IP Phone’s Power Adapter).

Click Here For Product Brochure (PDF File)

Expansion Phone Modules: