For mission critical high end applications, the 3700 series family of routers brings the ultimate in scalability, expandability, and dependability.  Built to support the very highest levels of integration, these machines are designed to allow you to combine branch office IP telephony, voice gateway, fax and data. 

Integrated security, intrusion detection and VPN support the network at the perimeter while integrated WAN caching preserves your WAN bandwidth.

Models:

3725 - base model

3745 - same as above, but with redundant power supplies, hot-swappable and field replaceable components.