Cisco SPA504G 4-Line IP Phone with 2-Port Switch PoE and LCD Display

The SPA504G 4-Line IP Phone with 2-Port Switch PoE and LCD Display, which is part of the Cisco Small Business Pro Series, is a dependable and affordable IP phone for business or home office use. The Cisco IP Phone has been tested to ensure comprehensive interoperability with equipment from voice over IP (VoIP) infrastructure leaders, enabling service providers to quickly roll out services to their customers.

With hundreds of features and configurable service parameters, the Cisco IP Phone caters to the needs of traditional business users with features such as easy station moves and shared line appearances (across local and geographically dispersed locations).

The Cisco IP Phone uses standard encryption protocols to perform highly secure remote provisioning and unobtrusive in-service software upgrades. Remote provisioning tools include detailed performance measurement and troubleshooting features, enabling network providers to deliver high-quality support to their subscribers. Remote provisioning also saves service providers the time and expense of managing, preloading and reconfiguring the customer's premises for equipment.

Telephony Features

4 voice lines

4 Independent SIP registrations

Line status: active line indication, with name and number

Menu-driven user interface

Shared line appearance

Speakerphone

Call hold

Music on hold

Call waiting

Caller ID name and number

Outbound caller ID blocking

Call transfer: attended and blind

Three-way call conferencing with local mixing

Multiparty conferencing via external conference bridge

Automatic redial of last calling and last called numbers

On-hook dialing

Call pickup: selective and group

Call park and unpark

Call swap

Call back on busy

Call blocking: anonymous and selective

Call forwarding: unconditional, no answer, on busy

Hot line and warm line automatic calling

Call logs (60 entries each): made, answered and missed calls

Redial from call logs

Personal directory with auto-dial (100 entries)

Do not disturb

Digits dialed with number auto-completion

Anonymous caller blocking

Uniform Resource Identifier (URI) (IP) dialing support (vanity numbers)

On-hook default audio configuration (speakerphone and headset)

Multiple ring tones

Called number with directory name matching

Ability to call number using name: directory matching or via caller ID

Subsequent incoming calls show calling name and number

Date and time with support for intelligent daylight savings

Call start time stored in call logs

Call timer

Name and identity (text) displayed at startup

Distinctive ringing based on calling and called number

10 user-downloadable ring tones

Speed dialing, eight entries

Configurable dial/numbering plan support

Intercom

Group paging

Network Address Translation (NAT) Traversal, including Simple Traversal of UDP Through 

NATs (STUN) support

DNS SRV and multiple A records for proxy lookup and proxy redundancy

Syslog, debug, report generation, and event logging

Highly secure call encrypted voice communications support

Built-in web server for administration and configuration with multiple security levels

Automated remote provisioning, multiple methods; up to 256-bit encryption 

(HTTP, HTTPS, Trivial File Transfer Protocol [TFTP])

Option to require administrator password to reset unit to factory defaults

Hardware Features

Pixel-based display: 128 x 64 monochrome LCD graphical display with backlight

Dedicated illuminated buttons for:

Audio mute on/off

Headset on/off

Speakerphone on/off

4-way rocking directional knob for menu navigation

Voicemail message waiting indicator (VMWI) light

Voicemail message retrieval button

Dedicated hold button

Settings button for access to feature, setup, and configuration menus

Volume control rocking up/down knob controls handset, headset, speaker, ringer

Standard 12-button dialing pad

High-quality handset and cradle

Built-in high-quality microphone and speaker

Headset jack: 2.5 mm

LED test function

Two Ethernet ports with integrated Ethernet switch: 10/100BASE-T RJ-45

802.3af-compliant PoE

Optional 5 VDC universal (100-240V) switching; power supply is ordered separately (Cisco PA100)

Security Features

Password-protected system, preset to factory default

Password-protected access to administrator and user-level features

HTTPS with factory-installed client certificate

HTTP digest: encrypted authentication via MD5 (RFC 1321)

Up to 256-bit Advanced Encryption Standard (AES) encryption

SIP over Transport Layer Security (TLS)

Secure Real-Time Transport Protocol (SRTP)