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Cisco SPA504G

  • Cisco SPA504G Cisco SPA504G
  • Cisco 504G Cisco 504G
  • Cisco SPA 504G Cisco SPA 504G

Savings Available on Phones when you bundle with Service

Availability: In stock

Regular Price: $89.00

Special Price: $86.00

Regular Price: $89.00

Special Price: $86.00

The Cisco SPA504G is Cisco's 4-line business desktop IP Phone within the Cisco Small Business Pro product family. Read More
Product Details
1 Year
MSRP Price:
% Off:

Cisco SPA504G 4 Line VoIP Phone with PoE

The Cisco SPA504g is a 4 line VoIP phone which features a large backlit LCD, 2 switched 10/100 ports, and Cisco HD Voice. Supporting either SIP or SPCP, the Cisco SPA504G is the perfect IP phone for hosted VoIP or premise based IP PBX systems.

Cisco SPA504G Overview:

The Cisco SPA504G supports LDAPv3 Corporate Directory Search, Cisco XML-based Corporate Directory and features a customizable logo and screensaver. SIP 3rd party call control for server based applications and Cisco XML API support for advanced applications is also available. The Cisco SPA504G supports for the standard SIP2.0 protocol, as well as Cisco's proprietary SPCP (Smart Phone Control Protocol), a derivative of Cisco's SCCP (Skinny) call control protocol which is used on the Cisco UC500 platform. The Cisco SPA504G is part of the Cisco Small Business Pro product family of Cisco phones.

Cisco SPA504G Features & Functions:

  • 4-Line Phone
  • Dual switched ethernet ports
  • IEEE 802.3af PoE (Power Over Ethernet)
  • Supports SIP or SPCP protocol
  • G.729 and G.722 Wideband Audio Support
  • Menu driven user interface
  • Web based GUI, remote provisioning
  • IP dialing support
  • Hi Res LCD Display
  • 2.5mm stereo headset connector
  • AUX port (SPA932 or SPA500S attendant console is supported)
  • High quality audio handset
  • Full duplex hands free speakerphone
  • Hearing aid compatibility (HAC)
  • Support calls between TTY's
  • Works well with GN Netcom, Jabra and Plantronics wired headsets
  • Optional PA100 Power Adapter and MB100 Wall Mount Adapter
  • Much more....

Didn't find the Cisco phone you were looking for?

Check out these other VoIP phones by Cisco:

# of Lines
High Definition
Backlit Display
Color Display
Touchscreen Display
Protocols Supported
# of Ethernet Ports
PoE (IEEE 802.3af), Power Supply Available Separately
Headset Interface
EHS Support
Cisco SPA504G

Don Stefanie

Direct: 716-213-6906

Why Pay $86.00 for the Cisco SPA504G?

  • 4 Line Phone with Hi-Res Backlit LCD Display

  • SIP and SPCP (Cisco C500) Protocol Support, G.722 Wide Band Audio

  • Dual Ethernet, 802.3af PoE

For advice, reviews and industry insight... be sure to follow us online.

Questions on Cisco SPA504G

From Lucy at 7/24/2014 8:00 PM

Q: I need to buy a wifi conference room phone. Which the best option at an affordable price?

A: It probably depends on what you feel is "affordable".

Check out this one:

I believe that these phones are pretty much the same. The price point will be higher than "wired" conference phones because they are WiFi. Please keep that in mind.

Do you find this question helpful?  Yes   No

From Paul at 9/26/2014 8:00 PM

Q: I have a Cisco spa 508g. The stand is broken but the phone works fine. Where can I obtain a replacement stand for it?

A: You can purchase one from us. Please email Mike Rehac at

Do you find this question helpful?  Yes   No

From Cedrick at 5/13/2016 8:00 PM

Q: Will the Cisco SPA504G work with magic jack service?


A: Hi Cedrick,

You would have to configure the MJ through the Cisco phone interface through the PSTN settings. It should work.

Thank you,

Do you find this question helpful?  Yes   No

Have a Question?

Add Your Review

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Customer Reviews

(Submitted on ) | by

Great Phone
I've installed over 100 of these phones. I purchased them all here from VOIP supply. Out all these that I deployed I haven't had to replace one. They have been running for over a year now. I've had zero sound issues. I agree with the last reviewer abbreviations are very common on phones these days. If you want a feature rich solid phone with the Cisco name that is easy to deploy then look no further.

(Submitted on ) | by

real world use
I sell these day in and day out, with 3cx. They are rock solid, easy to configure, and take a beating. if you can't understand xfer = Transfer, bxfer = Blind Transfer (no one needs to answer), and dnd = do no disturd, then you probally should not be looking at a VoIP system. Go find a Nortel or Avaya and use that instead.

(Submitted on ) | by

Incredibly hard to use
Quality of the sound in receiver is awfull - always gives a feedback of my voice, so it sounds like I am talking to myself.
All its functions are hard to understand due to abbreviations. Even the simple call forward is like a mission impossible... You would not be able to figure it out by yourself without a manual...

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