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This circuit will allow you to connect any tape recorder that has a mic and remote input to a phone line and automatically record both sides of a conversation when ever the phone is in use. You will need to take a couple of voltage readings before connecting the circuit. First determine the polarity of your phone line and connect it to the circuit as shown and then determine the polarity of the remote input and connect it to the circuit. Circuit operation is as follows. When the phone is on hook the voltage across the phone line is about 48volts dc. When the phone is off hook the voltage will drop to below 10volts dc. When the line voltage is at 48volts the FET is off which causes Q2 and Q3 to be off. When the phone is picked up the FET turns on along with Q2 and Q3 which turns your recorder on. The tape recorder must be in the record mode at all times. As you can see the power source for the circuit is the phone line. Circuit Diagram

    Japanese Sharp introduced 4.1-inch IGZO LCD display with a resolution of 2560x1600 pixels, ultrathin side frames and record the density of pixels per inch - 736ppi. Accommodate a number of pixels in the panel manufacturer managed due to their small size - 11.5 mm x3. Recall the absolute record for the pixel density among all Android-devices today is the smartphone Samsung Galaxy S5 LTE-A 5.1-inch QHD-display - 576 ppi. Mass production of the new panels Sharp will begin only in 2016, respectively, and the first mobile news, equipped with them will be available no earlier than a year and a half. There is no doubt that over such a long period of time not less than its impressive design will show as Samsung and LG Display. First, for example, according to the latest leaks, in August 2015 will begin production of 5.9-inch Super AMOLED-display with ultra-high-resolution Ultra HD (3840h2160 points) and the density of pixels in 746 dpi.