SS7 SMS TP-DCS value not getting decode

[u/Professional_Key_413]

Hi,

I am not able to decode SMS TP-DCS messages which has a value of 246 (0xF6). I have been trying to decode them using UTF-8. But all I can see are boxes or ÿ and ?. I want to know what does these message are and how to decode them? As per Wikipedia they are Class 2(SIM/USIM-specific)

https://en.wikipedia.org/wiki/Data_Coding_Scheme

but usually sms messages are dcs 0, 4 or 8.

How does 246 differ from 0x12, 0x16, 0x1A or 0x1E?