How Ecs Works - Cisco ASR 5000 Series Administration Manual

▀ Basic Features and Functionality
analyzers can also detect video streaming over RTSP, and image downloads and MMS over HTTP and differential
treatment can be given to the Vcast traffic.
Traffic analyzers work at the application level as well, and perform event-based charging without the interference of the
service platforms.
The ECS content analyzers can inspect and maintain state across various protocols at all layers of the OSI stack. The
ECS supports inspecting and analyzing the following protocols:
 Domain Name System (DNS)
 File Transfer Protocol (FTP)
 Hyper Text Transfer Protocol (HTTP)
 Internet Control Message Protocol (ICMP)
 Internet Control Message Protocol version 6 (ICMPv6)
 Internet Message Access Protocol (IMAP)
 Internet Protocol version 4 (IPv4)
 Internet Protocol version 6 (IPv6)
 Multimedia Messaging Service (MMS)
 Post Office Protocol version 3 (POP3)
 Remote Authentication Dial In User Service (RADIUS)
 RTP Control Protocol/Real-time Transport Control Protocol (RTCP)
 Real-time Transport Protocol (RTP)
 Real Time Streaming Protocol (RTSP)
 Session Description Protocol (SDP)
 Secure-HTTP (S-HTTP)
 Session Initiation Protocol (SIP)
 Simple Mail Transfer Protocol (SMTP)
 Transmission Control Protocol (TCP)
 User Datagram Protocol (UDP)
 WebSocket Protocol
 Wireless Session Protocol (WSP)
 Wireless Transaction Protocol (WTP)
Apart from the above protocols, ECS also supports analysis of downloaded file characteristics (for example, file size,
chunks transferred, and so on) from file transfer protocols such as HTTP and FTP.

How ECS Works

This section describes the base components of the ECS solution, and the roles they play.
Content Service Steering
Content Service Steering (CSS) enables directing selective subscriber traffic into the ECS subsystem (in-line services
internal to the system) based on the content of the data presented by mobile subscribers.
▄ Cisco ASR 5x00 Enhanced Charging Services Administration Guide
14
Enhanced Charging Service Overview