This document introduces the features and characteristics of Cisco IOS software version 12.3T, including enhanced security, improved voice quality and functionality for branch offices, enhanced Quality of Service (QoS), deployment of IPv6 and NetFlow, etc. It is suitable for enterprise, access, and service provider group customers.
The document provides an overview of Cisco IOS 12.3T, describing new security, QoS, IPv6, and other enhancements compared with earlier releases. It also lists the supported router platforms such as the Cisco 3800, 1800, 2800 and 2600XM series.
Lifecycle information is included, detailing the phases from First Commercial Shipment (FCS) through End‑of‑Sale (EoS) and End‑of‑Life (EoL). Instructions for downloading the software from Cisco.com and notes on pre‑installed image packages are also provided. This manual is written in Chinese.
| Supported router series | Cisco 3800 series |
|---|---|
| QoS feature | AutoQoS |
| Security protocols | 3DES, AES, IPsec VPN |
| Lifecycle phase (FCS) | First Commercial Shipment |
Visit the Cisco.com download center and locate the IOS 12.3T package.
IOS 12.3T supports Cisco Integrated Services Routers such as the 3800, 1800, 2800, 2600XM and 3700 series.