(In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)\r
\r
If an ack '+' is not sent resend the packet\r
(In other words, if received packet is '$12345$12345$123456#checksum', only '$123456#checksum' will be processed.)\r
\r
If an ack '+' is not sent resend the packet\r