New Features in Release 12.4(15)T

• Automatic Signature Extraction

• Bidirectional Forwarding Detection

• Cisco IOS Auto-Upgrade Manager

• Cisco IOS IPS Support for Microsoft Engines

• Cisco IOS IPv6 Configuration Library

• Cisco IOS VoiceXML Browser Update to W3C VoiceXML 2.1

• Cisco IP VSAT Satellite WAN Network Module (NM-1VSAT-GILAT)

• CNS Config Retrieve Enhancement with Retry and Interval

• Command Scheduler (KRON) Policy for System Startup

• Configuring an IP Local Pools Holdback Timer

• Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, and 2800 and 3800 Series Routers (HWIC-3G-CDMA-x)

• Configuring the 3G Wireless High-Speed WAN Interface Card for Cisco 1841, and 2800 and 3800 Series Routers (HWIC-3G-GSM)

• Configuring the Cisco NM-1A-T3/E3 Network Module

• Consent Feature for Cisco IOS Routers

• DHCP Server Multiple Subnet

• Embedded Resource Manager (ERM)-MIB

• Ethernet Operations, Administration, and Maintenance

• Extended VLAN ID

• FHRP - GLBP Client Cache

• Flexible Packet Matching

• HTTP TACAC+ Accounting Support

• iLBC Support for SIP and H.323

• IP Tunnel MIB

• L2TP Congestion Avoidance

• L2TP Forwarding of PPPoE Tag Information

• Media Resource Control Protocol (MRCP) Version 2

• Logging to Local Nonvolatile Storage (ATA Disk)
  This feature was formerly named as SYSLOG Writing to Flash.

• MANET: Enhancements to PPPoE for Router-to-Radio Links

• Multiple PPPoE Client

• Network Admission Control

• New Voice and Telephony Features in Cisco IOS Releases 12.4T

• OER- Application Aware Routing with Static Application Mapping

• OSPF Mechanism to Exclude Connected IP Prefixes from LSA Advertisements

• OSPFv2 Local RIB

• OSPFv3 Dynamic Interface Cost Support

• Outbound Proxy Support for the SIP Gateway

• Per Interface Mroute State Limit with Bandwidth-Based Call Admission Control (CAC) for IP Multicast

• Performance Routing - Application Interface

• Performance Routing - Link Groups

• PPPoE Session Limit Local Override

• Protected Port on EtherSwitch HWICs on Modular Integrated Services Routers

• Reserve Memory for Console Access

• Reverse Route Injection

• SCTP Release 4

• Secure HTTP Client (SSL) for Cisco IOS VoiceXML Browser

• Signed Tcl Scripts

• SIP REFER outside the scope of a dialog created with a SIP INVITE

• SIP: SIP Support for Asymmetric SDP

• SIP: SIP Support for PAI

• SIP: SIP Support for SRTP

• SSL VPN

• SSL VPN Remote User Guide

• Transparent Bridging Support for Authentication Proxy

• VRF-Aware H.323 and SIP for Voice Gateways

• Wireless Enhancements for Integrated Services Routers

• X.25 Call Record

• SSG Mobile Wireless Enhancements