The Cisco Access Server 2500 series provides a variety of access solutions for small office and remote site environments. With the added value of the optimized Cisco Internetworking Operating System (Cisco IOS) software, the new high-performance features of the Access Server series reinforce Cisco's status as the premier provider of remote access solutions. Cisco's 2500 Series Access Servers incorporate the latest in communications technology.This is ISDN with integrated NT1 device module.