D-Link DPH-400G/F5 SIP Color LCD Business IP Phone

The D-Link DPH-400G/F5 SIP Business IP Phone is a high-performance VoIP communication device designed for modern office environments ranging from small enterprises (SOHO) to medium-sized businesses (SMB). It combines robust functionality with a sleek, user-friendly interface, offering advanced call features, multi-account support, and seamless SIP compatibility. With a vibrant color LCD, customizable keys, and dual Gigabit Ethernet ports, the DPH-400G ensures optimal communication and workflow efficiency in any professional setting.

Product Features

Advanced VoIP Functionality for Business Users
The DPH-400G supports up to 6 SIP accounts, enabling multiple users or lines within a single device. It includes support for key VoIP features such as call transfer, call forwarding, three-party conferencing, and message waiting indication (MWI), making it ideal for busy work environments.

Color LCD Display and Intuitive Navigation
A bright, easy-to-read color LCD screen provides a clear visual interface, allowing users to navigate menus, view call history, manage contacts, and adjust settings with ease using 4 soft keys and a directional navigation pad.

Comprehensive Call Management Tools
Features like caller ID display, 300-entry call history, a 500-entry local phonebook, and support for up to 4 remote XML phonebooks streamline contact management. Users can also configure 9 speed dial numbers and customize soft keys or DSS keys for frequently used functions.

Superior Audio Performance
Equipped with high-quality voice codecs including G.711, G.729, G.723.1, G.726, and G.722, the phone delivers clear and reliable audio. Additional enhancements such as acoustic echo cancellation (G.167), jitter buffer, and silence suppression ensure professional-grade sound clarity during calls.

Flexible Connectivity Options
The DPH-400G features dual 10/100/1000 Mbps Gigabit Ethernet ports (WAN and LAN), allowing for seamless integration into existing network environments. Users can also connect a headset or expansion module via the dedicated headset and console ports.

Enhanced Security and Control
With password-protected configuration access, keypad lock, emergency call features, and call control tools such as blacklist and limit list functions, users can ensure secure and controlled phone usage.

Efficient Provisioning and Remote Management
The phone supports automatic provisioning via TFTP, FTP, HTTP, or HTTPS, allowing IT administrators to perform remote firmware updates and profile management easily. The web-based user interface (HTTP UI) is accessible in English and other languages for broader deployment.

Business-Grade Network Capabilities
Advanced network support includes QoS (IEEE 802.1Q/p), VLAN tagging, LLDP, and compatibility with VPN protocols such as L2TP and OpenVPN, ensuring voice traffic is prioritized and secure across enterprise networks.

Product Specifications

• Display:
  • 2.8-inch TFT color LCD
  • Resolution: 320 × 240 pixels
• SIP & Call Features:
  • Supports 6 SIP user accounts
  • Call hold, resume, mute, call waiting & indication
  • Anonymous call and rejection
  • Three-way conferencing
  • Blacklist, whitelist, and auto-redial
  • BLF/Presence support
  • Action URL/Active URI
  • Emergency call configuration
• Voice & Audio:
  • Codecs: G.711 a/u, G.729A/B, G.723.1, G.726-32, G.722
  • Acoustic Echo Cancellation (G.167)
  • Comfort Noise Generation, VAD, Jitter Buffer
  • Packet Loss Concealment
  • DTMF: SIP info, Transparent, RFC 2833
• Network Interfaces:
  • 1 × WAN: 10/100/1000 Mbps Ethernet port
  • 1 × LAN: 10/100/1000 Mbps Ethernet port
  • 5V DC IN Jack for power adapter
  • Handset Jack
  • Headset Jack
  • Console Jack (for expansion module)
• Network & Security Protocols:
  • SIP RFC 3261 compliant
  • NAT traversal: STUN, Static Port Mapping
  • IP assignment: Static IP, DHCP, PPPoE
  • VLAN support: IEEE 802.1Q, 802.1p
  • Diffserv (DSCP), LLDP
  • L2TP VPN/OpenVPN
  • Auto Provisioning: FTP, TFTP, HTTP, HTTPS
• User Interface & Management:
  • LCD & keypad interface in multiple languages
  • Web UI for configuration
  • Firmware and profile upgrade via auto provisioning
• Other Features:
  • 4 programmable soft keys
  • 10 DSS keys
  • 4 navigation keys + OK button
  • 9 ringtones and 9 speed dials
  • Keypad lock and customizable functions
  • Wall-mount kit included