Corded Voice Over IP Phones

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$208.99
Aastra 55i
Includes One Year Manufacturer's Warranty
Item #A1755-0131-10-05
  • Corded Voice Over IP Phone
  • Voice Over Internet Protocol (VoIP)
  • Session Initiation Protocol (SIP)
    Enabler Protocol for Telephony & Voice Over IP (VoIP) Services
  • Up to 9 Call Appearance Lines
  • Caller ID / Call Waiting
  • Hearing Aid Compatible
  • Wall Mountable
  • Digital Duplex Speakerphone
  • Modular Headset Connector With Built-In Amplifier
  • 3-Way Conferencing
  • 144x75 Graphical LCD Display
    Soft White Backlight For User Comfort In Any Lighting Environment
  • LED For Call & Message Waiting Indicator
  • Phone Directory / Dialer
  • 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
  • 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 55i IP Phone requires the following environment:
  • SIP-based IP PBX system or network installed and running with a SIP account created for the 55i 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).

The 55i from Aastra offers powerful features and flexibility in a standards based, carrier-grade advanced level expandable IP telephone. With a sleek and elegant design, 144 x 75 pixel backlit LCD display and 6 dynamic context-sensitive softkeys, the 55i is fully interoperable with leading IP Telephony platforms, offering advanced XML capability to access custom applications and support for up to 9 calls simultaneously.

Part of the Aastra family of IP telephones, the 55i is ideally suited for moderate to heavy telephone users who require more one touch feature keys and XML based programs.

Click Here For Product Brochure (PDF File)