Total Frequency Bandwidth
The total frequency bandwidth supported by a distributed cable modem termination system (D-
CMTS) ranges from 5 MHz to 1 GHz.
Upstream Frequency Bandwidth
The upstream frequency bandwidth supported by a D-CMTS can be of the European or North
American standard.
l European standard: 5 MHz to 65 MHz
l North American standard: 5 MHz to 42 MHz
Downstream Frequency Bandwidth
The downstream frequency bandwidth supported by a D-CMTS can be of the European or North
American standard.
l European standard: 87 MHz to 1002 MHz
l North American standard: 57 MHz to 1002 MHz
Recommended Frequency Spectrum Configuration
Figure 16-2 lists the recommended frequency spectrum configuration, using the European
standard as an example.
Figure 16-2 Recommended frequency spectrum configuration
Table 16-1 Description of recommended frequency spectrum configuration
Item Planning Suggestion Planning Principle
Upstream
frequency
bandwidth
The upstream frequency
bandwidth ranging from 5 MHz
to 15 MHz is used to transmit
low-traffic data without strict
requirements on signal-to-noise
ratio (SNR), such as network
status monitoring, VoD, user
passwords, and program indexes.
l Plan the upstream frequency
bandwidth for the cable TV (CATV)
service to support the services that
have been provisioned and those to be
provisioned.
l Plan continuous upstream frequency
bandwidths for the analog TV service,
digital TV service, and data over cable
service interface specification
(DOCSIS) data service to prevent
interference between the services. In
addition, the planning should facilitate
The upstream frequency
bandwidth ranging from 16 MHz
to 65 MHz is used to transmit
upstream data.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
16 OptiCable D-CMTS Configuration (MA5633 Working as
a Standalone NE)
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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