Zhone 2000 ユーザーガイド

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NTRODUCTION
This chapter introduces the 2000 Series integrated access devices (IADs) and 
describes their hardware and software.
As competition in the telecommunications market intensifies, carriers find 
themselves under growing pressure to reduce network costs and deliver 
differentiated, highly competitive services. In response to this challenge, 
Paradyne provides a family of IADs that incorporates the capabilities of 
multiple networking devices capable of supporting multiple networking 
protocols such as TDM, Frame Relay, and ATM, and multiple applications 
such as the integration of voice/data and high-speed internet access. By 
consolidating multiple network devices, converging multiple services, and 
moving intelligence to the network’s edge, Paradyne’s 2000 Series IADs 
lower requirements for capital equipment, minimize operational expenditures, 
and maximize carriers’ profits. Using the 2000 Series IADs to integrate legacy 
networks into evolving infrastructures, service providers can now also enable 
budget-constrained customers to leverage the power of wide-area 
communications for competitive advantage. In particular, these new services 
allow SMBs, often lacking the resources to install and manage multiple 
communications devices, to compete effectively with their larger counterparts 
in the global marketplace.
The 2000 Series IADs are access devices that terminate a network WAN, and 
provide the end user with the ability to send and receive both voice calls and 
data transmissions via a single connection. The network WAN connection 
may be either T1, E1, SDSL, ADSL, or SHDSL. The High POTS Port models 
have from 12 to 24 POTS ports that have metal housing and a Universal 
Serial Interface (USI). The Low POTS Port models have from 4 to 8 POTS 
ports that provide service via individual RJ11 ports. Low POTS Port models 
are encased in a plastic housing. All models are equipped with a 
10/100Base-T Ethernet interface with integrated routing protocols and 
functionality.
The built-in flexibility of the 2000 Series, supporting emerging protocols such 
as MGCP and SIP, enables the IAD to evolve with the network, and provides 
an easily managed, cost-effective migration to VoIP.
 
The “s” version of the 
2000 Series IADs provides a single unit solution that can support VoATM 
and VoIP applications in a single unit. The 2208s, 2216s, and 2224s also