The I Series IRD4210 is a part of the I Series 2.4GHz – VoIP Cordless Phone, 2 Line, RediDock in color Ash

Features:

• I Series VoIP
• Single or Two line speakerphones
• VoIP-based protocol; SIP RFC 3261 compliant
• Codecs supported: G711a; G711μ; G729
• Corded Supports 802.1Q VLAN tagging
• 2-port 10/100 ethernet switch • Supports 802.1Q VLAN tagging
• Supports DHCP or static IP address
• Electronic 3-way conference*; Hold, Mute, Redial keys
• Cordless: Supports up to five handsets, including one on the base and four remotes (RediDock kits); AutoSync – handset automatically syncs with base unit when in cradle
• 5 or 10 Configurable Guest Service Keys
• ADA-compliant volume control with enhanced Sonica™ hearing aid compatibility
• Cordless: Bright message waiting indicator and positive charge indicator 
• Cordless: Optional remote cordless handset battery backup
• Case: 10
• *Two-line only