Summary: This phone replaces the SPA921. Essentially as with all Linksys products, really the only change is the model number, and the branding. It now shows Cisco where it used to be Linksys. The firmware was updated, but is still pretty much the same.
Pros: Just as good as the SPA921 it replaces. Users of the old SPA921 will not have any issues getting these setup.
Cons: Does *not* ship with PA100-NA Power Adapter. I have 5 SPA 921's I purchased and they all came with this. This newer model supports PeE ( Power over Ethernet ) out of the box, and if your hardware does not support this, or something else, you have to buy the power adapter. I ended up finding it fo...
Summary: Using with a 3CX-Based IP Telephony system, haven't had any issues with sound quality.
Pros: -Well Marked Buttons -Backlit Screen -Simple to use Web Interface -Can upload alternate ringtones to device -Decent Loudness on Speakerphone -Various Screensavers -PoE
Cons: -First one I received stopped working, but the 'egg made it right, second one has been going strong. -Not sure why, but the caller ID for an incoming call says "To: xxx-xxx-xxxx", but not a deal-breaker -10/100 ethernet ports, but again, not a big deal
Summary: Hace poco tiempo, decidimos cambiar nuestro teléfono que detecta las llamadas por este otro, para dejar el que teníamos en el salón en el despacho, para así tener dos teléfonos que nos detectan las llamadas.