You are correct. But there is not a different schematic for each operation. I have attached the data sheet. The information is there for both types of operation.
MP
CM8880.pdf
MP
CM8880.pdf
Further to my last reply:
You should not connect anything "directly" to the telephone line. You should use the small transformer which is common for telephone line connection. In most places, if your circuit causes a problem with the telephone company's equipment, you are liable for the repairs.
MP
You should not connect anything "directly" to the telephone line. You should use the small transformer which is common for telephone line connection. In most places, if your circuit causes a problem with the telephone company's equipment, you are liable for the repairs.
MP
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