NSG 9000-6G - Harmonic Inc

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Chapter 4 Configuring Applications D2E Application 4.6 D2E Application The Direct to Edge (D2E) application is for future use only. When NSG 9000-6G is operating as part of a D2E system, configure it in the same manner as a regular Wideband M-CMTS application: • Set the QAM manager for the relevant QAMs to M-CMTS • Configure the sessions as regular Wideband M-CMTS sessions © 2012 Harmonic Inc. 100 NSG 9000-6G, Version 2.7, Rev B
Chapter 5 Conditional Access System (CAS) 5.1 CAS Overview The Conditional Access System (CAS) prevents unauthorized viewing of programs by scrambling services that later on can be decrypted using the correct decrypting key. NSG devices support the following CAS modes: • DVB SCR scrambling - an encryption mode for the DVB protocol. • Privacy Mode - an encryption mode developed by Motorola Inc. 5.1.1 DVB SCR Scrambling Overview A typical CAS is comprised of a few elements. The NSG 9000 includes the SCS, CWS and scrambling modules. Following is a short description of the CAS elements. • Event Information Scheduler (EIS) - in charge of all of the headend’s schedule information and the CAS configuration to ensure that services are encrypted correctly. It initiates the Scrambler Control Group (SCG) message, the actual request sent by the EIS to the NSG 9000 that encryption is required.The SCG message includes the service ID, time slot and the access criteria. • SimulCrypt Synchronizer (SCS) - controls and manages the scrambling parameters to allow encryption. It receives requests for encryption and passes them on to the Control Word (CW) generator. Once a CW is initiated the SCS passes it to ECMG. • Control Word Server (CWG) - generates the encryption key. • Scrambling Unit - encrypts the services. • Entitlement Control Message Generator (ECMG) - receives control words and access criteria and generates an Entitlement Control Message (ECM) stream in return. ECMG ECM CW & ACC EIS SCG message SCS CWG NSG 9000 clear input stream Scrambling unit scrambled Output stream The EIS sends the NSG 9000 an SCG message, a request to encrypt a service component. In turn, the NSG 9000 sends a message to the ECMG which contains the following: • Control Word (CW) - the encryption key generated by the NSG 9000. © 2012 Harmonic Inc. 101 NSG 9000-6G, Version 2.7, Rev B
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NSG 9000-6G Narrowcast Services Gat
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Documentation Conventions This manu
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Table of Contents 3.12.4 Configurin
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Table of Contents Appendix D Contro
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Chapter 1 Features and Specificatio
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Chapter 1 Features and Specificatio
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Chapter 2 Getting Started 2.1 Initi
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Chapter 2 Getting Started Full Devi
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Chapter 2 Getting Started Guideline
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Chapter 2 Getting Started Guideline
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Harmonic Inc. 4300 North First Stre
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NSG 9000-6G - Harmonic Inc

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