Telephonic communications – Reception of calling information at substation in wireline... – Blocking caller id transmission
Patent
1993-01-25
1996-12-24
Chin, Stephen
Telephonic communications
Reception of calling information at substation in wireline...
Blocking caller id transmission
379197, 379199, 379201, 379354, 379355, H04M 156, H04M 300, H04M 166, H04M 700
Patent
active
055880495
ABSTRACT:
With Calling Number Identification (CNID) service, Frequency Shift Keying (FSK) data is sent over the telephone lines to the telephone service customer. A telephone subscriber may prevent their name
umber from being transmitted to the party they are calling on a per call basis by dialing a prefix before they dial the desired number. The present invention allows for the automatic insertion/removal of that prefix in the number stream when the called party's number is dialed. This feature is accomplished by inserting a $ character into the dialing sequence. If the blocking feature is enabled, the $ is translated to the numeric sequence necessary to prevent the transmittal of one's telephone number. In the alternative, the $ is translated to a meaningless delimiter if the feature is disabled.
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Detering Greig R.
Gallick Robert L.
Hewell James F.
Chin Stephen
Shankar Vijay
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