Zhone Technologies IMACS Network Device - Manual (Page 86)

Zhone Technologies, Inc. IMACS Product Book, Version 4
March 2001 Page 82
Frame Relay Access and Concentration Server
This section highlights the capabilities of the IMACS Frame Relay server card as a cost-effective, efficient, and
intelligent high-speed Frame Relay Assembly and Disassembly (FRAD) device and access concentrator in a Frame
Relay network. This enables the service provider to deliver Frame Relay and Internet services with a high degree of
quality in an economical fashion. The following is a list of the Zhone Technologies Frame Relay server card key
benefits:
Highly efficient assembly, disassembly and concentration of Frame Relay traffic allows for significant Frame Relay
switch port savings.
High Frame Relay port density offers significant hardware savings when compared to typical backbone switches
making it suitable for deployment at the customer premises. Bringing the frame relay network features closer to the
end-user and CO reduces backhaul charges due to efficient use of the frame relay backbone switch port.
100% compliance with industry Frame Relay standards enables ready interoperability in multi-vendor networks.
Support for existing UNI (User to Network Interface) and NNI (Network to Network Interface) standards implies
that the frame relay server easily integrates into existing, standards-compliant frame relay infrastructure of the
service provider.
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Manageability via SNMP and TELNET eliminates need for separate network management package and
offers comprehensive diagnostics for both physical and logical network.
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Complete Support for physical layer diagnostics. In addition, it provides network access for a wide range of
devices ranging from high-speed data interfaces (HSU), DDS interfaces (OCU-DP, DS0-DP), IDSL interfaces
(BRI), and sub-rate data (FRAD).
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Comprehensive, standards-based congestion management techniques.
Standards based congestion management ensure interoperability with existing infrastructure and enables the service
provider to offer better, more cost-effective Frame Relay services to its subscribers.
The Frame Relay Server can be deployed in the following application scenarios to provide a very cost-efficient and
high-quality Frame Relay access to the end-users:
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Frame relay switch port savings
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Frame relay and Internet service provisioning
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IDSL service provisioning
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Grooming and concentration in cellular networks
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Central Office FRAD
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Frame relay concentration at hub sites
Frame Relay Switch Port Savings
Figure 32 shows an IMACS equipped with one or more Frame Relay server cards that is utilized at the service
provider’s Central Office to efficiently concentrate multiple lower speed Frame Relay circuits into a consolidated
Frame Relay stream into the backbone Frame Relay switch. This results in significant savings in port occupancy on
the Frame Relay switch. It is amplified by the fact that these channelized ports on the backbone switches are much
more expensive than their unchannnelized counterparts.
The presence of 68 highly-integrated channelized Frame Relay ports combined with the statistical multiplexing
advantages of Frame Relay facilitate the savings by reducing the backbone switch port occupancy by over 2.5 times
(67 DS0 circuits instead of 24 DS0 circuits on a single channelized T1 trunk). In a typical case this reduces circuit
cost per DS0 by 20%.