dramrattan
Member
Hi,
I want to monitor telephone calls made by users so i could track who made what calls...I created a circuit whereby each user must enter a pin before using the phone. This works good but i am using the dial tone from the CO for them to enter their pin so what i am really doing is sending those four digits that consists of their pin to the central office each time. Once their pin matches what is stored in memory, i display "pin ok" and a relay breaks the telphone line and then reconnects giving the user the option to dial a number since they hear a dial tone once again from the CO. If the pin is invalid the user must re-enter a valid pin when i trip the line.
How do i mimic a dial tone so the user can enter his/her pin and i wouldn't have to keep sending this information to the exchange each time because someone told me that i am dropping the resstance at the exchange each time i do that and i could cause damage to their equipment. Is this true?...Would a mimic tone solve this problem? I need to create a mimic tone for the users to enter their pin in any case. Any help on how to do this please.
I want to monitor telephone calls made by users so i could track who made what calls...I created a circuit whereby each user must enter a pin before using the phone. This works good but i am using the dial tone from the CO for them to enter their pin so what i am really doing is sending those four digits that consists of their pin to the central office each time. Once their pin matches what is stored in memory, i display "pin ok" and a relay breaks the telphone line and then reconnects giving the user the option to dial a number since they hear a dial tone once again from the CO. If the pin is invalid the user must re-enter a valid pin when i trip the line.
How do i mimic a dial tone so the user can enter his/her pin and i wouldn't have to keep sending this information to the exchange each time because someone told me that i am dropping the resstance at the exchange each time i do that and i could cause damage to their equipment. Is this true?...Would a mimic tone solve this problem? I need to create a mimic tone for the users to enter their pin in any case. Any help on how to do this please.
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