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D-CCAP Solution

D-CCAP Solution Overview

The distributed converged cable access platform (D-CCAP) solution supports DOCSIS 3.0 services and will gradually evolve to DOCSIS 3.1. It maximizes DOCSIS 3.1 performance on high order modulation (HOM) at the physical layer and provides ultra-broadband cable access for carriers. In this way, the service life of HFC networks is extended to the next decade. Compared with DOCSIS 3.0, DOCSIS 3.1 features high bandwidths and spectrum usage so that it empowers operators to provide smooth and clear audio as well as video experience for users over the Internet.

D-CCAP Solution Overview

Provides an upstream bandwidth over 2 Gbit/s and a downstream bandwidth over 10 Gbit/s.

  • Compatible with existing MSO networks.
  • Adapts to HFC networks divided by various spectrums.
  • Achieves smooth evolution without restructuring existing networks.

D-CCAP Network Architecture

Network Architecture

Network Architecture

Distributed converged cable access platform (D-CCAP) meets the requirements of triple-play network services over hybrid fiber coaxial (HFC) networks of multiservice operators (MSOs) because of unique advantages of the D-CCAPs, such as high bandwidth and supporting HFC networks

Fully-digitized Converged Network

Transmission Media Change Improves CNR by 7–8 dB

Transmission Media Change Improves CNR by 7–8 dB

In a cable network, carrier-to-noise ratio (CNR) is a key factor that affects bandwidth improvement. Specifically, insufficient CNR in a cable network hinders bandwidth improvement. An improved CNR supports a higher modulation order and bandwidth accordingly in a traditional network, the distribution hub and fiber node use analog fibers for transmission, that is, analog signals are transmitted from the distribution hub to cable modems (CMs).
D-CCAP shortens transmission distance of analog signals, that is, analog signals are transmitted between the CM and CMC and digital signals are transmitted between the OLT and CMC. This solution improves line quality and CNR so that more bandwidth can be obtained

Recommended Product Combination


Product                                                            Hardware Requirements
MA5800-X17 (21 inch)
MA5800-X15(19 inch)
MA5800-X7 (19 inch)
MA5800-X2 (19 inch)
Control board:                                                                                                                 H901MPLA, H901MPLB or H901MPSC
10G GPON service board:        H901XGHD
GPON service board:          H901GPHF
10GE service board:          H901OXHD, H901OXEG
GE service board:               H901OGHK
Video service board:            H901CVEC
• DOCSIS 3.1 MA5833-BS60 (cable outlets on a single side) :  D3.0/32D x 16U + D3.1/6D x 2U + 80 SC-QAM
• DOCSIS 3.1 MA5833-DD60 (cable outlets on both sides) :  D3.0/32D x 16U + D3.1/6D x 2U + 80 SC-QAM
• DOCSIS 3.0 MA5633 (cable outlets on a single side) :  32D x 8U
• DOCSIS 3.0 MA5633-XB10 (cable outlets on the front panel):  32D x 10U
• DOCSIS 3.1 MA5633 (cable outlets on a single side) :  D3.0/32D x 10U + D3.1/D2 x 2U + 64 SC-QAM
• DOCSIS 3.1 MA5633-DD20/XD20 (cable outlets on both sides) :  D3.0/32D x 10U + D3.1/2D x 2U + 64 SCQAM


Acronyms and Abbreviations

BSoD                                                            Business Services over DOCSIS LDPC                                                    Low Density Parity Check
CM Cable Modem MSO Multiple Systems Operator
CMC Cable Media Converter ODN Optical Distribution Network
CMTS Cable Modem Terminal System OFDM Orthogonal Frequency Division Multiplexing
CNR Carrier-to-Noise Ratio OFDMA Orthogonal Frequency Division Multiple Access
D-CCAP  Distributed-Converged Cable Access Platform OSS Operations Support System
DOCSIS  Data over Cable Service Interface Specification PNM Proactive Network Maintenance
EQAM  Edge Quadrature Amplitude Modulation QAM  Quadrature Amplitude Modulation
FTTH Fiber to The Home VPN      Virtual Private Network