发明名称 Fixed cellular terminal with a distinctive dial tone to indicate an emergency call is being placed
摘要 Of special application in cellular mobile networks that communicate this terminal, via radio, with a base station to provide services of voice and/or data communications to a number of subscribers and which, in addition to the basic communications service, also support an emergency call service performed through the terminal in question by dialling a certain number. This terminal comprises means (41) for generating user signalling tones and which also generate an emergency call dial tone, different from the other tones already present, when a call process is initiated by the subscriber (5) in the case where the fixed cellular terminal is only capable of making emergency calls.
申请公布号 US5680439(A) 申请公布日期 1997.10.21
申请号 US19950430810 申请日期 1995.04.28
申请人 ALCATEL N.V. 发明人 AGUILERA, JOSE MARIA GARCIA;RUBIO, FRANCISCO JAVIER LEON;RAMIREZ, RAMIRO RAMIREZ
分类号 H04M3/42;H04M1/677;H04W4/22;H04W88/02;(IPC1-7):H04M11/00;H04M9/00;H04M11/04;H04Q7/00 主分类号 H04M3/42
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