Cisco IOS Release 12.1(2)T

• Configuring Cisco MC3810 Series Concentrators to Use High-Performance Compression Modules

• Voice over ATM with AAL2 Trunking on Cisco MC3810 Series Concentrators

• Voice Busyout Enhancements on the Cisco 2600 and 3600 Series Routers and MC3810 Series Concentrators

• Cisco IOS DHCP Relay Agent Support for Unnumbered Interfaces

• Transparent CCS and Frame Forwarding Enhancements on the Cisco MC3810

• Voice Port Testing Enhancements in Cisco 2600 and 3600 Series Routers and MC3810 Series Concentrators

• Frame Relay-to-ATM Network Interworking (FRF.5)

• Frame Relay-to-ATM Service Interworking (FRF.8)

• Frame Relay PVC Interface Priority Queueing

• Gatekeeper to Gatekeeper Redundancy and Load-Sharing

• Trunk Conditioning Enhancements on Cisco MC3810 Series Concentrators

• Voice over Frame Relay Using FRF.11 and FRF.12 Configuration Updates

• Voice Port Enhancements in Cisco 2600 and 3600 Series Routers and MC3810 Series Concentrators

• Simple Gateway Control Protocol Support on Cisco MC3810 and Cisco 3600 Series Routers

• Configuring T1/E1 High Capacity Digital Voice Port Adapters
  Cisco 7200 and 7500 series routers