Aastra 6721ip (21ip)
Buy now: £146.00 + VAT



The Aastra 6721ip (21ip) phone features the embedded Microsoft Lync 2010 Phone Edition client, offering unparallel integration with Microsoft Lync server 2010.


The Aastra 6721ip phone offers users the choice of price and features in a Lync standalone IP desk phone, offering dual gigabit ethernet ports and a message waiting light indicators


This Lync IP phone offers exceptional voice quality and proven reliability in a stylish global design.


The IP Phone includes the following features:


Embedded Microsoft Communicator Phone Edition Software
Exceptional voice quality
Standalone operation
Dual Gigabit Ethernet ports
Integrated PoE support
Message Waiting Indicator


he Aastra 6721ip offers the best of both worlds in terms of simplicity in design and richness in features. The most notable feature of this IP Phone is its embedded Microsoft Communicator Phone Edition software. This feature opens up the phone to a wide range of useful and powerful functions that make this particular model a stand out among others


The Aastra 6721ip, just as the other Aastra series IP phones, is known for its superb voice quality. Conversations are crystal clear with no echoes. Likewise, background noise suppression is excellent. Communicating with another person through long distance is like having a side by side communication. Support for Microsoft audio codecs provides further sound enhancement features that are not available in other models. Furthermore, the Aastra 6721ip is a wideband audio phone that is capable of HD voice communication. It has integrated support for G.722 codec, providing users with the highest possible voice quality in every conversation


Network connectivity is possible through the dual Gigabit Ethernet ports. It is also possible to connect the Aastra 6721ip to a PC via the USB port. Using this connection option allows the IP phone to connect to a PC for synchronization functions. It can also connect to a Microsoft Communicator Server equipped PC or phone for group collaboration and unified presence indication. A large presence indicator on the Aastra 6721ip provides this function so that other UC equipped phones can identify the presence of the phone. it’s important to note that even without connecting to a PC, the Aastra 6721ip is able to act as a standalone unit thanks to the embedded Microsoft Communicator software, making it operate as a true IP Phone


The Aastra 6721ip comes with a large 3.5″ QVGA coloured LCD display, 2 soft keys on the LCD, along with standard navigational keys and a menu key provide an intuitive user interface. Visual indicators provide instant user status all the time. Multi lingual support is provided so it is possible to deploy this phone in widely dispersed areas


The only comment most reviewers have with regards to Aastra 6721ip is the optional AC adapter. In a phone system that does not support Power over Ethernet functionality, customers would need to make a separate purchase of the power adapter. Other than this, the rich features can very well compensate for this minor issue. Overall the Aastra 6721ip is an excellent choice for corporate power users who need extensive use of phone communication and different key features


Additional Information



12 Months Warranty




3.5 Inch QVGA Colour

WiFi Support



Ethernet (RJ-45)

Ethernet Port Speed


Number Of Ethernet Ports


Ethernet Cable Included



AC or PoE

AC PSU Included


Number Of Programmable Keys


SIP Accounts/IDs


Expansion Keypad Available




USB Port


HD Voice Technology


Headset Interface


Electronic Hook Switch Support


Handsfree Speakerphone


Skype Support


Microsoft OCS/Lync Support


Presence Indicator