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Mitel (Aastra) 6721ip (21ip) Microsoft Lync IP Phone

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Key Features
  • Standalone IP phone operation
  • Dual Gigabit Ethernet ports
  • Integrated PoE support

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Please Note: This product has been discontinued. Please see our Mitel range.

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Mitel (Aastra) 6721ip (21ip) Microsoft Lync (OCS) IP Phone

The Mitel (Aastra) 6721ip VoIP Phone for Microsoft Lync (OCS) is the latest addition to Aastra's award winning line of IP phones.

The Mitel (Aastra) 6721ip IP Phone is a unique addition to the Lync model line from Aastra, providing a lower cost option for users who still require the benefits of a true IP phone. The phone is perfect for Hot Desking applications and common areas, such as lobbies and meeting rooms.

Mitel (Aastra) 6721ip - Key Features

  • Embedded Microsoft Lync 2010 Phone Edition Software
  • Exceptional voice quality
  • Standalone IP phone operation
  • Dual Gigabit Ethernet ports
  • Integrated PoE support
  • Message Waiting Indicator


"Always On" Operation

 It is no longer necessary to have a phone connected to an operating PC to enjoy the benefits of Lync. Microsoft Lync phones are true stand alone IP phones and have the Microsoft Lync 2010 Phone Edition embedded in the phone.

Intuitive Interface

 An ergonomic and user friendly hard key layout, used in conjunction with selectable soft keys, a large 2-way navigation key and a 3.5" LCD display screen, provide an efficient and intuitive interface.

UC Presence Indicator

 The Aastra 6725ip includes a large presence indicator displaying, at a glance, your own presence status being shown to other Lync users.

Simplified Deployments

 The Aastra 6721ip is designed to save your business time and money. Dual autosensing switched Gigabit Ethernet ports eliminate additional wiring and simplify installations.

Mitel (Aastra) 6721ip Technical Specifications

Feature Keys and other Interfaces

  •  3 selectable soft keys
  • Headset and speakerphone keys (Aastra 6725ip only)
  • RJ headset jack (Aastra 6725ip only)
  • Home and back keys
  • Message waiting light indicator
  • 2-way navigation key
  • 2 volume keys
  • Full numerical keypad (0-9, #,*)

Display and Indicators

  •  3.5" QVGA Color Screen LCD
  • Intuitive graphical user interface and navigation menus
  • Multi-color presence indicator
  • Dedicated LED for call and message waiting indicator


  •  Integrated IEEE 802.3af Power Over Ethernet (PoE) support
  • AC adapter (48V DC) sold separately

Operating Conditions

  •  Temperature: 0°C to 50°C (32°F to 122°F)
  • Relative Humidity: 20% to 90%, noncondensing
  • Storage Temperature: -20°C to 70°C (-4°F to 158°F)

Supported Languages

  • English
  • Chinese Simplified
  • Chinese Traditional
  • Danish
  • Dutch
  • Finnish
  • French
  • German
  • Italian
  • Japanese
  • Korean
  • Norwegian
  • Portuguese (Brazil)
  • Russian
  • Spanish
  • Swedish

Regulatory CE/Europe

  • ROHS compliant
  • WEEE (2002/96/EC)
  • CE Mark (2004/108/EC EMC Directive and 73/23/EEC Low Voltage Directive)

Regulatory EMC

  • FCC Part 15 Class B
  • ICES-003 Class B
  • EN55022 Class B
  • CISPR22 Class B


  • CAN/CSA C22.2 No. 60950/ UL 60950-1
  • EN 60950
  • AS/NZS 60950
  • CB scheme


  • FCC Part 68 (Hearing Aid Compatibility)

Part Numbers

  • Aastra 6721ip: A6721-0131-20-55

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