cisco 3600 series routers are modular access routers with lan and wan connections that can be configured by means of interchangeable modules and wan interface cards. with over 70 modular interface options, cisco 3600 series routers provide solutions for data, voice, video, hybrid dial access, virtual private networks (vpns), and multiprotocol data routing. the modular design of the routers provides flexibility, allowing you to configure or reconfigure your router according to your needs.

    this guide discusses the following router models:

    . cisco 3620 router (contains two slots)

    . cisco 3631 router (contains two slots)

    . cisco 3640 router (contains four slots)

    . cisco 3660 router (contains six slots)

    this chapter includes the following sections:

    . hardware features, page 1-1

    . network modules and wan interface cards, page 1-6

    . memory, page 1-6

    . system specifications, page 1-8

    . regulatory compliance, page 1-10