The T21 comes inwards ii models, the T21P beingness the POE version, which is the 1 I volition live looking at. The alone deviation betwixt the T21 as well as the T21P is inwards fact that the T21P supports 802.11af Power over Ethernet.
Specifications
hard disk drive Voice (G722)
132x64 Mono Graphical LCD
2 Port 10/100 Network
POE 802.11af
Speakerphone
Unboxing as well as pose out impressions
The T21P comes inwards a decent as well as sturdy box, as well as fifty-fifty the OEM production is shipped inwards a colouring printed package. The telephone is decently protected against bumps past times cardboard insets. Individual components are wrapped inwards plastic.
Include inwards the box:
Phone Base
Phone Handset
Curly Cable
Desk/Wall Mount Base
The powers render is notably absent inwards the T21P since it is POE powered.
Assembly is as piece of cake as you lot would expect, later all this is non an IKEA cabinet, it is a phone. Plug inwards the correct cables, as well as click inwards the base,
Boot upward on this telephone is rather slow, but non significantly worse than a Snom300. Coming inwards at almost 1 infinitesimal as well as thirty seconds for the pose out boot, to the betoken where you lot tin give the axe access the phone's bill of fare system.
The bill of fare is real piece of cake to navigate cheers to the large screen, as well as setting upward the telephone without using a calculator is far less frustrating than amongst the Snom 300.
Build Quality
The telephone is real sturdy, though alone fourth dimension volition country how durable it genuinely is. The casing itself seems difficult wearing, but the telephone buttons experience a chip flimsy, peculiarly the number pad.
The handset itself likewise seems solid.
Usage
Sound Quality
While real few VOIP providers inwards our portion cause got rolled out wideband audio, nosotros can, at the real to the lowest degree run G722 internally. The deviation inwards character when compared to the manufacture criterion G729 codec is similar chalk as well as cheese. The added bonus is that G722 does non cause got the same licencing restrictions as G729 where Asterisk is concerned.
The speaker inwards the handset delivers crystal clear audio, as well as does the claim to "HD Audio" justice.
The speakerphone business office likewise surpasses the Snom 300 past times a meaning margin. This telephone is past times no agency a conference phone, but inwards a pinch it would really live skilful enough.
Phone Interface
The phone's bill of fare organisation is good pose out, as well as the 4 directional bill of fare navigation buttons makes it a breeze to navigate. Yealink has provided plenty CPU might to arrive a smooth, if non beautiful experience. The inclusion of an XML based phonebook agency you lot tin give the axe centralize your fellowship phonebook for piece of cake access past times all your staff.:q
Web Interface
Since this is where most of the advanced configuration takes place, this is where administrators volition pass most of their time, this is my master copy draw of piece of work inwards damage of the phone's usability. It is still, unfortunately, ugly.
Ugliness aside, the interface is logically pose out for the most part, but uncommon naming conventions (eg. DSSKey) may live confusing. The tips that accompany each configuration selection is as unhelpful. These ii issues aside, the interface is responsive, as well as piece of cake to use. I really prefer the Yealink interface over the Snom one.
Auto Provisioning
Where the Yealink interface does shine is inwards the auto provisioning department. Once you lot cause got pose upward your pose out telephone amongst all your generic configuration, you lot tin give the axe download the config file, as well as using DHCP you lot tin give the axe force that config file out to all the other T21Ps on your network.
Conclusion
With the recent growth inwards failure rates on the SNOM 300 that nosotros cause got experienced, this is a real skilful alternative. Deployment is made piece of cake through the auto provisioning feature, as well as the user interface is keen for novel users. All inwards all, a highly recommended entry degree IP Phone.
