A study on the architecture of a network adapter

Author

Nisase, Takemi ; Fujiya, Hiroshi ; Mizuno, Toshiro

Author_Institution

NTT Commun. Switching Labs., Musashino, Japan

fYear

1994

fDate

1-5 May 1994

Firstpage

619

Abstract

We show the need for the network adapter (NA) function and discuss problems with its role as a channel processing NA that is important to the introduction of B-ISDN. We discuss a suitable module structure and an experimental system. This system can provide inter-connection between the STM-channels on STM-1 and ATM virtual channels on ATM-NNI. To reduce the amount of hardware, the NA should provide the multiplexed multi-bit-rate AAL type 1 function. An integrated testing circuit also can reduce the amount of hardware. It can check the connectivity and normality of the ATM layer, the AAL, and the STM channels. We roughly estimated the performance of ATM circuit emulation services for voice, modem, and facsimile communication under normal conditions and cell loss conditions using real terminals

Keywords

B-ISDN; asynchronous transfer mode; facsimile; modems; multiplexing; multiplexing equipment; performance evaluation; voice communication; AAL type 1 function; ATM layer; ATM virtual channels; B-ISDN; STM-1; STM-channels; cell loss; channel processing; circuit emulation services; facsimile communication; integrated testing circuit; modem; module structure; network adapter; performance; voice communication; Asynchronous transfer mode; B-ISDN; Circuit testing; Clocks; Communication switching; Emulation; Hardware; ISDN; Integrated circuit interconnections; Laboratories;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-1825-0

Type

conf

DOI

10.1109/ICC.1994.368831

Filename

368831