Cisco Cisco Digital Service Access Node (DSAN) 8200 백서
White Paper
The DSAN Overview
The Cisco
®
Digital Service Access Node (DSAN) provides a cost-effective, flexible,
easy-to-deploy solution for serving the needs of MDU and bulk analog accounts. The
DSAN regenerates up to 82 analog channels of National Television Systems Committee
(NTSC) video at the customer premises through the use of bulk decryption and bulk
decoder technology. The environmentally hardened node product is designed to operate
transparently within a cable television (CATV) network for setup, provisioning, and billing,
fitting easily into existing hybrid fiber-coaxial (HFC) installations.
DSAN regenerates up to 82 analog channels of National Television Systems Committee
(NTSC) video at the customer premises through the use of bulk decryption and bulk
decoder technology. The environmentally hardened node product is designed to operate
transparently within a cable television (CATV) network for setup, provisioning, and billing,
fitting easily into existing hybrid fiber-coaxial (HFC) installations.
Specifically designed for MDU deployment, the DSAN supports two auxiliary inputs,
allowing MDU owners to provide up to eight customized local channels for their tenants
(for example, security cameras, DVD players, local bulletin boards, and so on). The
channel lineups for each DSAN can also be configured independently to support
specific customer needs, allowing service providers to offer a wider variety of content.
Additionally, the DSAN supports digital passthrough, making DSAN an extremely flexible
platform that is ideal for those customers who want additional services such as high
definition, video-on-demand (VoD), data, and voice.
allowing MDU owners to provide up to eight customized local channels for their tenants
(for example, security cameras, DVD players, local bulletin boards, and so on). The
channel lineups for each DSAN can also be configured independently to support
specific customer needs, allowing service providers to offer a wider variety of content.
Additionally, the DSAN supports digital passthrough, making DSAN an extremely flexible
platform that is ideal for those customers who want additional services such as high
definition, video-on-demand (VoD), data, and voice.
The DSAN Solution
The DSAN is a device that converts a pure digital plant spectrum to a combined
spectrum containing both digital and analog output, as shown in Figure 2. The analog
output is re-created from portions of the digital plant spectrum and occupies the
frequency range designated for CATV analog channels (54–552 MHz). The combined
digital output (564 MHz–1 GHz) is available for use by compatible receiving equipment,
such as a set-top, EMTA, cable modem, and so on.
spectrum containing both digital and analog output, as shown in Figure 2. The analog
output is re-created from portions of the digital plant spectrum and occupies the
frequency range designated for CATV analog channels (54–552 MHz). The combined
digital output (564 MHz–1 GHz) is available for use by compatible receiving equipment,
such as a set-top, EMTA, cable modem, and so on.
In addition to providing the combined analog plus digital output, the DSAN provides a
pure digital passthrough output port that is identical to the input (minus attenuation) for
servicing those customers who want the full service provider offerings.
pure digital passthrough output port that is identical to the input (minus attenuation) for
servicing those customers who want the full service provider offerings.
Figure 2