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GSM all-in-one (GSM box by Pepe) schematic |
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Complex GSM box, including MBUS support. Should work with Ericsson, Siemens, Panasonic, Sagem, Sony, Alcatel, Motorola, Nokia, Bosch.
 This scheme is some kind of RS-232 Converter. Almost all digital devices we use require TTL or CMOS logic levels. That"s why the first step when trying to connect the device to RS-232 port is transformation of RS-232 levels ack into 0 and 5 Volts. This is done by RS-232 Level Converters, like a Max 232.
| UNKNOWN connector to the cellular phone | ||
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Last updated at Sat Jun 25 2005 (�������� ��� ����� ��� ������ ����������) | ���� �������� �������� ������ ��� �� ����������? | |
