Cisco GoQAM, Installation And Operation Manual

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Chapter 1 Introducing the GoQAM
4 4004834 Rev D
Features
The GoQAM provides many new digital broadcast features and innovations for your
system. The following table describes these features and innovations.
Feature Function
DVB ASI Input pairs

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.
10/100BaseT Ethernet
Interface
Provides a control and management interface to the DNCS
Multiplexing
Functionality
Provides program and packet identifier (PID) remapping and
filtering
MPEG Stream
Management

Provides program clock reference (PCR) timestamp correction

Provides program specific information (PSI) reconstruction

Provides transport stream monitoring

Allows adaptive insertion rate control
Stream Encryption,
Conditional Access,
and Management

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
IF Version:
64/256 QAM IF
Output (2)

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