Cisco SPA 504G IP Phone (1 x RJ-7 Headset, 2 x RJ-45 10/100Base-TX , 1 x Sub-mini phone Headphone - 4Phonelines)

I purchased this phone to upgrade my Linksys SPA-941. The SPA-504g does not disappoint. Keep in mind the phone may or may not come with a power supply. The phone can receive its power over the ethernet cable (PoE) if your network is so configured. ...

Previous user complained that phone did not come with power adapter. This is common place for PoE devices. Power adapter for this phone is listed under LinkSys here. You are looking for the PA100-NA if you do not have a PoE source.

Installed in February 2012 with a PBX in a Flash, open source, phone system. Worked without a problem! The system works beautifully with great sound quality. Don't attempt to install this phone if you know nothing about VoIP systems unless you have lots of time to learn. :)

I just received these phones for my business. We have a number of them at the office and love them. I needed several more and so ordered them for the first time from this Amazon seller. Imagine my surprise when the phones came and there was NO POWER CORD. ...

I bought 10 of these phones for a small business and within 2 weeks the backlights on the displays went dark on all the phones. I replaced two of these phone under warranty and the backlights on the replacements also failed. (Note that you need to pay ...

No power supply included with phone. This means I now have to wait another couple days just to see if this works. Ridiculous.

I would make one technical recommendation to purchasers: these do not come with a power supply...If you are a medium sized or larger office (not just 1 or 2 people), then I would recommend purchasing a POE switch to power the phones instead of the $15 power brick...But, the phone only works as good as the provider you use...

We have been using several of these phones for well over a year and have yet to see any problems! None...Easy setup - nice phone - good value for the price No power supply No VPN Easy to configure...You are looking for the PA100-NA if you do not have a PoE source...

Connects directly to an Internet telephone service provider or to an IP private branch exchange (PBX...Part of the Cisco Small Business Pro Series, the SIP-based Cisco SPA504G 4-Line IP Phone (Figure 1) has been tested to ensure comprehensive interoperability with equipment from voice over IP (VoIP) infrastructure leaders, enabling service providers to quickly roll out competitive, feature-rich services to their customers...The Cisco SPA504G 4-Line IP phone also supports productivity-enhancing features such as VoiceView Express and Cisco XML applications when used with the Cisco Unified Communications 500 Series in SPCP mode...The Cisco SPA504G uses standard encryption protocols to perform highly secure remote provisioning and unobtrusive in-service software upgrades...