I see some repeating data in that stream of data:
00:12:39:00:34:35,”RLMobile”
00:13:45:46:99:23,”Jeny”
00:12:39:00:34:35,”RLMobile”
00:13:45:46:99:23,”Jerry”
I see that between each repeating pattern of data that there is a delimiter, the comma. That will make parsing easy.
I see that there is non-repeating data:
\r\n +INQ: (at the start)
\r\n (at the end)
So, what I would see as the start of the packet is the + (SOP), and the \r is the end of the packet (EOP). After the start of the packet, then, there is a token that can be ignored (INQ:) and after the end of the packet, before the start of the next, there is some other stuff that can be ignored (\n, \r, \n) (assuming that the next packet looks just like this one).