support for send SMS to short (non-free?) numbers

Type of Address octet: 
Bits:
7 - always 1
6,5,4 - TON - type of number (000 - unknown, 001 - international, 010 - natinal (no prefix or +), 011 - network specific number, 100 - subscriber number, 101 - alphanumeric (according to GSM TS 03.38 7-bit default alphabet), 110 - abbreviated number, 111 - reserved)
3,2,1,0 - NPI - number plan identification (0000 - unknown, 0001 - e.164/e.163, 0011 - x.121, 0100 - telex, 1000 - national, 1001 - private, 1010 - ETSI DE/PS 3 01-3, 1111 - reserved)

0xB1 - 1 011 0001
0x81 - 1 000 0001