New Features in Release 12.4(6)T

• ACL Manageability

• ADSL HWICs
  Introduces 2-port ADSL HWIC Hardware.

• ANI Suppression During L2TP Setup

• Certificate - Complete Chain Validation

• Circuit Emulation over IP

• Cisco IOS Firewall MIB

• Cisco IOS IPv6 Configuration Library

• Cisco Modem Relay

• Cisco Text Relay for Baudot Text Phones

• Control Plane Logging

• DHCP Option 82 per Interface Support

• DHCP Relay Accounting

• Dynamic Frequency Selection and IEEE 802.11h Transmit Power Control

• Easy VPN Server

• Fax Relay Support for SG3 Fax Machines at G3 Speeds

• FHRP - HSRP Multiple Group Optimization

• Flexible Packet Matching XML Configuration

• In-Service Updates to Gatekeeper Zone Prefix Configuration

• Interface Input Queue Memory Reclamation

• IOS Firewall Stateful Failover

• IP SLAs ICMP Jitter Operation

• IP SLAs--LSP Health Monitor

• IP SLAs RTP-Based VoIP Operation

• Management Plane Protection

• MGCP NAS Package LAPB-TA

• MPLS LSP Ping/Traceroute for LDP/TE, and LSP Ping for VCCV

• MSCHAP Version 2

• NAT ARP Ping

• NAT SCCP Fragmentation Support

• Network Admission Control: Agentless Host Support

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

• OCSP - Server Certification from Alternate Hierarchy

• OER Voice Traffic Optimization

• OSPF Enhanced Traffic Statistics for OSPFv2 and OSPFv3

• OSPF RFC 3623 Graceful Restart Helper Mode

• OSPF: SNMP ifIndex Value for Interface ID in OSPFv2 and OSPFv3 Data Fields

• Packet Mode Services on D Channel

• RIPv2 Monitoring with SNMP Using the RFC 1724 MIB Extensions

• Remote Monitoring MIB Update

• RSVP Agent

• RSVP Application ID Support

• SCCP PLAR with DTMF Out-Pulse Digits for FXS Analog Phones

• SDP Expanded Template CGI Support

• Secure Multicast

• Shortcut Switching Enhancements for NHRP in DMVPN Networks

• SIP: Busy Out Support

• SIP: Cisco IOS SIP Gateway Signaling Support Over TLS Transport
  The feature leverages the existing SIP GW's support of the PKI and utilizes TLS functionality to provide SIP signaling over TLS transport.

• SIP-to-SIP Extended Feature Functionality for Session Border Controller (SBC)

• Tag and Template

• Trunk-Management Features

• Unique Calling Party Information with Alternate Endpoints

• VPN Access Control Using 802.1X Authentication

• SSL VPN

• Zone-Based Policy Firewall

• C7200 VSA (VPN Services Adapter) Feature Module

• SSL VPN Remote User Guide

• Call Admission Control for IKE