Ip Routers - NEC Aspire S Manual

When purchasing a router for use with the Aspire IP feature, the minimum requirements would be that it
provide VPN and QoS. Current VoIP protocols for the Aspire, NGT and H.323 telephones can not com-
municate over NAT. Therefore, when communications is required over NAT, the router must support
VPN. Note that a router which supports 'VPN Pass Through' requires a VPN server.
The priority control feature is required to prevent RTP packet loss. If a WAN is used for VoIP only and
the bandwidth is wide enough for the VoIP channel, then the QoS feature might not be required.
The following are available routers which provide VPN and QoS:
• NEC IX1000 / 2000 Series
• Yamaha RT105, RTX1000 / 2000
• Cisco 800 Series
• Furukawa FITELnet - F40
• Fujitsu SiR-170, SiR-150
The following routers provide VPN but no priority control (QoS):
• Linksys BEFSX41, DEFVP41
• OMRON MR104DV, MR104FH
• Allied Telesis AR410
Aspire S Hardware Manual
Section 7: Specifications and Parts List

IP Routers

Section 7: Specifications and Parts List ◆ 7-7
7