Sony Ericsson GM47 - Manual (Page 210)

GM47/GM48 INTEGRATOR’S MANUAL
210
LZT 123 7263 R1C
<ta> Description
0-63 According to GSM 04.18 V8.6.0, the coding of the timing
advance value is the binary representation of the timing
advance in bit periods; 1 bit period = 48/13 ìs. <ta> is the
integer representation of the timing advance in binary
format
64-255 Reserved