Cisco GoQAM Installation And Operation Manual page 20

Chapter 1 Introducing the GoQAM
Features
The GoQAM provides many new digital broadcast features and innovations for your
system. The following table describes these features and innovations.
Feature
DVB ASI Input pairs
10/100BaseT Ethernet
Interface
Multiplexing
Functionality
MPEG Stream
Management
Stream Encryption,
Conditional Access,
and Management
IF Version:
64/256 QAM IF
Output (2)
4
Function
Supports a maximum ASI data rate of 216 Mbps (MPEG

packet rate) at all four inputs
Accepts two pairs of inputs. Each pair consists of an

incumbent-encrypted stream and its corresponding clear
stream. The GoQAM extracts critical packets—those without
which video cannot be reconstructed—and encrypts them
using Cisco PowerKEY encryption technologies. The GoQAM
also extracts the corresponding critical packets from the
incumbent-encrypted stream. Later, the PowerKEY packets
and the incumbent-encrypted critical packets are multiplexed
with the portion of clear stream that has not been encrypted.
Provides a control and management interface to the DNCS
Provides program and packet identifier (PID) remapping and
filtering
Provides program clock reference (PCR) timestamp correction

Provides program specific information (PSI) reconstruction

Provides transport stream monitoring

Allows adaptive insertion rate control

PowerKEY Native stream encryption mode

Allows PowerKEY Book One ECM Handling

Provides MPEG packet insertion and entitlement control

messages (ECMs)
Supports broadcast clear-to-air and interactive encrypted

PowerKEY modes
Provides a separate physical connector for each QAM output

(up to 2 )
Provides a 44 MHz fixed output

 Supports International Telecommunications Union (ITU) J.83
Annex-A, and Annex-B, and Annex-C standards
4004834 Rev D