Aastra SIP Voice Over IP Corded Telephones SIP Voice Over IP Corded Telephones
 
Aastra 51i
Includes One Year Manufacturer's Warranty
  • Corded Voice Over IP Phone
  • Voice Over Internet Protocol (VoIP)
  • Session Initiation Protocol (SIP)
  • Built-In HTTP Server
  • XML Browser
  • Single Line Operation
  • Caller ID / Call Waiting
  • Digital Duplex Speakerphone
  • 3-Line LCD Display

**Requires A Broadband Internet Connection & Does Not Operate On A Regular (Analog) Phone Line**

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$82.99
Aastra 51i
Includes One Year Manufacturer's Warranty The Aastra 51i IP phone offers features and flexibility in an open-standards based, carrier grade, basic level IP telephone. With a sleek, elegant design, the 51i is fully interoperable with leading IP telephony platforms.

System offers advanced XML capability to access custom applications and support for high-quality SIP communications. Part of the 5i Series of IP telephones, the 51i is ideal for a business that requires single line, high-quality, SIP communication.

51i Features:

  • Corded Voice Over IP Phone
  • Voice Over Internet Protocol (VoIP)
  • Session Initiation Protocol (SIP)
  • XML Browser
  • Single Line Operation
  • Caller ID / Call Waiting
  • Hearing Aid Compatible
  • Wall Mountable
  • Digital Duplex Speakerphone
  • Modular Headset Connector With Built-In Amplifier
  • 3-Line LCD Display
  • LED For Call & Message Waiting Indicator
  • Phone Directory / Dialer
  • Call Forwarding
  • Intercom
  • Call Transfer
  • Redial
  • Date / Time Display
  • Do Not Disturb
  • Integrated IEEE 802.3af Power over Ethernet (PoE) Support
  • Optional AC Adapter (Not Included)
  • Two-Port 10/100 Mbps Ethernet Switch
  • Multilingual Menu Support (English, French, Spanish, Italian, & German)

Click Below to View Additional Details
  • Requirements:
    • SIP-based IP PBX system or network installed and running with a SIP account created for the 51i 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).
    • Ethernet/Fast Ethernet LAN (10/100 Mb)
    • Category 5/5e straight through cabling
  • Security:
    • User & Administrator Level Passwords For Login
    • Encryption of Configuration Files
    • HTTPS Configuration Download & Web Management
    • Phone Lock w/ PIN
    • Transport Layer Security (TLS)
    • Secure Real-Time Protocol (SRTP)
  • Networking & Provisioning:
    • Manual or Dynamic Host Configuration Protocol (DHCP) IP address setup
    • Support of DHCP Options 66, 60 & 43
    • Time & Date Synchronization Using SNTP
    • Quality of Service (QOS) Support IEEE 802.1 p/Q VLAN & Priority Tagging, Type of Services (TOS), & Differentiated Services Code Point
    • Network Address Translation (NAT) Support
    • Integrated HTTP/HTTPS Server For Web Administration & Maintenance Including a Built-in Troubleshooting Section
    • Mass Deployment via Central Provisioning of User Configuration Files TFTP, FTP, HTTP, HTTPS
    • Redundant Server Support
      -DNS-SRV
      -Local Backup Registrar and/or Proxy Server

Click Here For Product Overview (PDF File)