SPA504G Cisco VOIP Phone Charcoal Display 4 Lines SPA 504G

Overview of the Cisco SPA504G VoIP Phone 4-Line

The Cisco SPA504G VoIP Phone is designed for businesses that require dependable IP telephony with professional call management capabilities. Equipped with support for four phone lines, a backlit display, dual Fast Ethernet ports, Power over Ethernet (PoE), and high-definition voice technology, this business desk phone delivers reliable communication for offices, customer service teams, reception desks, and enterprise environments. Its intuitive keypad, programmable buttons, and advanced telephony features help improve productivity while ensuring clear and secure voice communication.

General Information

• Brand: Cisco
• Part Number: SPA504G
• Series: 500
• Type: VoIP Phone

Technical Specifications

• Network Ports (RJ-45): 2
• Headset Port: Yes
• Color Options: Silver, Dark Gray
• Material: ABS Plastic

Phone Features

• Key Expansion Modules: Up to 2
• Dialer Type: Keypad
• Dialer Location: Base
• Conference Calling: Supports 3-way calls
• Intercom Function: Yes
• Speakerphone: Digital Duplex
• Caller ID: Yes
• Automatic Redial: Yes
• Voice Mail: Yes
• Call Management: Includes Call Waiting, Forwarding, Transfer, and Hold
• Menu Operations: Yes
• Function Buttons: Conference, Speakerphone, Transfer, Headset, Mute, Hold, Redial
• Programmable Buttons: 4
• Volume and Ringer Control: Yes
• Indicators: Voice Message Waiting, Speakerphone, Headset
• Firmware Upgradable: Yes
• Additional Features: Call Timer, Built-in Clock, Pager Call, On-hook Dialing, Music On Hold, Built-in Web Server

IP Telephony Features

• Support for: Multiline, Various VoIP Protocols, Integrated Ethernet Switch, Power Over Ethernet (PoE)
• VoIP Protocols: SIP, SIP V2, SPCP
• Voice Codecs: G.722, G.729a, G.711u, G.711a, G.726
• Lines Supported: 4
• Quality of Service: IEEE 802.1Q (VLAN), Differentiated Services, IEEE 802.1p, Type of Service (TOS)
• IP Address Assignment: DHCP
• Security: 256 Bit AES
• Network Protocols: IP, TCP, TFTP, UDP, ICMP, ARP, HTTP, DNS, HTTPS
• Network Ports: 2 x Ethernet 10Base-T/100Base-TX
• Voice Features: Comfort Noise Generation (CNG), Voice Activity Detection (VAD), HD Voice
• Network Features: Network Address Translation (NAT)

Phone Memory

• Directory Capacity: 100 Names & Numbers
• Call Log Capacity: 60 Numbers

Display Information

• Location: Base
• Resolution: 128 x 64 Pixels
• Features: Backlit

Compatibility

• SIP Compatible: Yes, suitable for open-source IP PBX platforms and hosted telephony solutions
• SPCP Compatible: Yes, integrates with Cisco Unified Communications 300 (UC300) and 500 (UC500) Series for Small Business

The Cisco SPA504G VoIP Phone Charcoal Display 4 Lines

The Cisco SPA504G VoIP Phone Charcoal Display 4 Lines is designed for organizations that require dependable voice communication, efficient call management, and professional-grade IP telephony performance. Built for modern offices, business reception areas, customer support departments, executive workspaces, and administrative environments, this VoIP phone combines practical functionality with enterprise-ready reliability. Featuring support for four independent voice lines, an intuitive charcoal display, high-definition voice technology, programmable keys, and extensive compatibility with SIP-based communication systems, the Cisco SPA504G continues to be a trusted solution for businesses seeking consistent performance and long operational life.

Organizations continue to value the Cisco SPA504G because it delivers dependable voice quality while remaining simple to deploy, configure, and maintain. Whether installed as a standalone office phone or integrated into a larger IP PBX infrastructure, this model provides flexibility that suits businesses of various sizes. Its practical design emphasizes ease of use while maintaining the advanced capabilities expected from Cisco business communication products.

Four-Line Voice Capability

The four-line capability provides users with improved efficiency when handling incoming and outgoing business calls. Employees who regularly communicate with customers, suppliers, remote offices, and internal departments benefit from the ability to manage multiple conversations without switching between devices.

Each line can be configured independently according to organizational requirements. Different departments, direct extensions, or SIP accounts can be assigned while maintaining an organized workflow. This flexibility makes the Cisco SPA504G suitable for reception desks, executive offices, sales teams, finance departments, technical support centers, and administrative staff.

Improved Call Organization

Business communication often involves simultaneous conversations, call transfers, conferencing, and call waiting. The Cisco SPA504G simplifies these activities by presenting clear line status indicators and accessible function keys. Users can quickly determine active calls, held calls, incoming calls, and available lines without confusion.

Display for Everyday Operation

The charcoal display provides essential call information in a clean and readable format. Caller identification, extension details, menu navigation, call duration, directory entries, and configuration settings remain accessible through an organized interface that minimizes user learning time.

The display has been designed for professional office environments where employees interact with their desk phones continuously throughout the workday. Clear visual feedback improves operational efficiency while reducing errors during call handling.

Readable Interface

Menus remain organized with intuitive navigation that allows users to access frequently used functions quickly. The display supports efficient viewing of contact information, line status, voicemail notifications, and system settings.

Simple Navigation

Dedicated navigation keys work together with the display to streamline configuration tasks, directory browsing, and feature activation. Employees can become familiar with the interface quickly, reducing training requirements for organizations deploying multiple units.

Excellent Voice Performance

Voice clarity remains one of the defining characteristics of the Cisco SPA504G VoIP Phone. Business conversations require accurate communication where every word matters. Clear audio contributes to improved customer interactions, better collaboration between employees, and fewer misunderstandings during important discussions.

The phone supports advanced voice processing technologies that help reduce distortion while maintaining natural speech characteristics. Whether communicating with clients, suppliers, remote workers, or management teams, users experience dependable audio performance suitable for professional business communication.

Stable Daily Performance

Business continuity depends heavily on dependable communication systems. The Cisco SPA504G contributes to uninterrupted office productivity through stable operation and proven Cisco engineering standards.

Enterprise Hardware Quality

The physical construction reflects professional business equipment expectations. Buttons provide responsive operation while the overall housing supports long-term workplace use.

Network Integration Capabilities

Organizations deploying IP telephony require equipment that integrates smoothly into existing business networks. The Cisco SPA504G supports standard networking practices while maintaining dependable communication performance.

Benefits for Large Enterprises

Large organizations value standardized communication equipment that delivers consistent operation across multiple offices and departments. The Cisco SPA504G supports enterprise deployment strategies while maintaining familiar user experiences for employees.