发明名称 |
Apparatus and method for handling busy calls in telephone network |
摘要 |
A system and method for improving the completion rate of calls encountering a busy condition wherein the customer lines connected to a stored program controlled (SPC) switch having CLASS features are provided with a repeat call feature, comprising connecting such lines encountering a busy condition to announcement circuits in said switch which provide an announcement of the availability of a repeat call service for a specified charge upon the calling party disconnecting, reconnecting, and dialing specified characters. The announcement is followed by a simulated busy signal from the announcement circuitry. The switch thereupon periodically checks the condition of the called line for a predetermined period of time and upon detecting a free condition applies a distinctive ring signal to the calling line. Upon detection of the calling line going off-hook, the switch sends standard ringing to the called line. The announcement is preferably provided from multiple announcement trunks handled in a manner to maximize the efficiency of usage of a minimum number of announcement trunks.
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申请公布号 |
US5521965(A) |
申请公布日期 |
1996.05.28 |
申请号 |
US19940355331 |
申请日期 |
1994.12.12 |
申请人 |
BELL ATLANTIC NETWORK SERVICES, INC. |
发明人 |
D'ALESSIO, FREDERICK D.;BUCHANAN, ROBERT E.;CALAUTTI, BARBARA A.;SMITH, CAROLYN B. |
分类号 |
H04M3/424;H04M3/48;(IPC1-7):H04M3/42;H04M3/50 |
主分类号 |
H04M3/424 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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