Title :
Study on subscriber line circuits applicable for analogue telephone and ISDN interfaces
Author :
Fujii, Satoru ; Hashitsume, Yukinao ; Ozeki, Taka-aki ; Tahara, Toshiyuki
Author_Institution :
OKI Electric Co., Ltd., Tokyo, Japan
Abstract :
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
Keywords :
ISDN; electronic switching systems; subscriber loops; ESS; ISDN; analogue telephone; signal conversion adapter; subscriber line circuits; subscriber line interface circuit; switching system; Area measurement; Circuits; Costs; ISDN; Optical fiber cables; Power cables; Subscriptions; Switching converters; Switching systems; Telephony;
Conference_Titel :
Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on
Conference_Location :
Boston, MA
DOI :
10.1109/ICC.1989.49913
