Slajd 55
Slajd 56
Slajd 57
• 6 bits field (rangę 0-63)
• indicates number of octets following the length indicator octet and preciding check bits
• Three types:
» Ll=0; Fili in signal unit » Ll=1 or 2; Link status signal unit » Ll>2; message signal unit - when signalling information field is 62 octets or morę, Ll=63