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Study on subscriber line circuits applicable for analogue telephone and ISDN interfaces

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4 Author(s)
S. Fujii ; OKI Electric Co., Ltd., Tokyo, Japan ; Y. Hashitsume ; T. -A. Ozeki ; T. Tahara

The mixed installation of analog interfaces and ISDN (integrated services digital network) interfaces in an ISDN switching system is important for a smooth transition to full-scale ISDN. The subscriber line interface circuit which can accommodate analog and ISDN interfaces is discussed. The following issues are considered: (1) accommodation of analog and ISDN interfaces in the ULIC (unified subscriber line interface circuit); (2) composition of the ULIC; (3) construction and functionality of the analog/ISDN signal conversion adapter; and (4) the impact of the ULIC on the switching system

Published in:

Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on

Date of Conference:

11-14 Jun 1989