Cisco's access solutions encompass a range of access products and services to address all facets of accessing the network.The Cisco Catalyst 4000 Access Gateway Module (AGM) integrates Cisco IOS routing and Cisco CallManager voice services into the successful Catalyst 4000 Family of switches. Combining the LAN and WAN infrastructure enables businesses to reduce network complexity, improve network deployment times, and prepare for voice, video, and data convergence. The Cisco Access Gateway module provides lower cost of ownership - consolidating the WAN and LAN infrastructure into a single solution for the branch office improves deployment times and reduces network complexity and administration overheads. Furthermore, the Catalyst 4000 Access Gateway Module shares modular interfaces with the Cisco 2600/3600 and Cisco 1600/1700 routing families, simplifying sparing and network support. Cisco AVVID (Architecture for Voice, Video and Integrated Data) enabled - The Catalyst 4000 provides a complete branch-office solution with support for up to 192 user ports with IP WAN connectivity, voice interfaces for PBX and the Public Switched Telephone Network (PSTN), and voice services for Cisco CallManager. The Catalyst 4000 Access Gateway Module is Cisco IOS Software based and provides a full suite of IP routing services. The Catalyst 4000 Access Gateway Module also supports digital-signal-processing (DSP) services for Cisco CallManager - providing a migration path to IP telephony.