Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Draytek vigor 2925Vn Plus Broadband router Dual Wan VoIP
Product description: Vigor2925 Series is the IPv6 ready dual WAN broadband security firewall router. It ensures the business continuity for today and the future IPv6 network. Its two gigabit Ethernet WAN port can accept various high-speed Ethernet-based WAN links via FTTx/xDSL/Cable. The 2 USB ports are for 3G/4G LTE mobile broadband access. With the multi-WAN accesses, Vigor2925 routers support bandwidth management functions such as failover and load-balancing, making them ideal solutions for reliable and flexible broadband connectivity for the small business office. The specifications cover many functions that are required by modern day businesses, including secure but easy to apply firewall, comprehensive VPN capability, Gigabit LAN ports, USB ports for 3G/4G mobile dongles, FTP servers and network printers, VLAN for flexible workgroup management, and much more.
Product feature: VoIP for cost-effective communication, Dual Gigabit Ethernet WAN port for failover and load-balancing, 50 VPN tunnels with comprehensive secure protocols, 5 x Gigabit LAN ports with multiple subnets, VPN load-balancing and backup for site-to-site applications
Product brand: Draytek
Target attributes: Modem Type
Answer: attribute: modem type
value: None
source: None