Cisco SPA504G Maximize

Cisco SPA504G

VoIP SIP 504 Telephone with 1 x LAN & 1 x PC - 4 Lines, SPCP Support (PoE required, AC Adapter optional)

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VoIP SIP 504 Telephone with 1 x LAN & 1 x PC - 4 Lines, SPCP Support (PoE required, AC Adapter optional)

  • Lines 4
  • Ports PC, LAN
  • Conference 3 way
  • Headset support 2.5 mm jack
  • Power AC Adapter Optional, PoE Ready
  • Provisioning Plug & Play (Redirect server), Http, Tftp, Https
  • Codecs G.711 (alaw), G.722, G.711 (ulaw), G.729a
  • Networking QOS, VLAN 802.1Q
  • Other Speaker, VAD
Cindy C


The phone is ok. Not very good for my new requirements.
The UI (user interface) is clean and easy to use, not complicated at all.
A bad thing that did annoy me was how the POWER CABLE was not included with this.
If you are looking for a cheap but good quality sound then this will work for you.
I think you should try the 509G model. I tried it and I bought 2 Cisco SPA 509Gs after.

Frank S

Works good, great features!

This is a nice Cisco device.
So easy to set up... nice price also.
This phone is flexible enough for almost anyone in your workplace. 4 lines, nice clear display. All the features anyone in my organization would need.
I am very pleased with my purchase.
The only bad thing I can say about this phone is that it has not power supply.
Great buy, anyway!

Dianne D

Excellent phone

I've installed over 20 of these phones. I purchased them all here from VoiceMailTel shop.
I bought them for my office and I love them. Easy to configure. Speakerphone is excellent! PoE works flawlessly. ( SPA5XX series are known for speakerphone performance )
Making configuration changes requires phone to reboot. This also effects the ethernet port used for connectivity for other devices like your computer. That seemed to be the only negative part.
Works excellent. Buy it, plug it in and go!

Tracey L

Good office VoIP phones

We are VOIP provider company and we use these phones all the time.
If you or your clients has DSL with AT&T these phones WILL NOT work. Only very minor bad point is that the headset port seems sensitive to ground loop hum.
They are rock solid, easy to configure, and take a beating. These were tested on over 50 businesses in the past 10 months. Really nice office phones.
We do recomment this type of phone.

Dave C

Excellent work phone

We purchased these type of phones to upgrade our call center. We are using them for a VoiceMailTel account and the setup was a breeze - even for the non-technical people.
This phone can receive its power over the ethernet cable (PoE) if your network is so configured.
The form factor of these phones are both visually appealing and physically comfortable to work with on a daily basis.

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