Fix: T3192 and T3193 must be similar

In order to keep mobile at PACCH as long as possible the timer T3192 is
set to 1500ms. This reduces the probablity of long lasting assignment
process on CCCH for subsequent downlink TBFs.

openbsc/src/libbsc/bts_ipaccess_nanobts.c

@@ -157,7 +157,7 @@ static unsigned char nanobts_attr_cell[] = {
 		20, 	/* T3142 */
 		5, 	/* T3169 */
 		5,	/* T3191 */
-		200,	/* T3193 (units of 10ms) */
+		160,	/* T3193 (units of 10ms) */
 		5,	/* T3195 */
 		10,	/* N3101 */
 		4,	/* N3103 */

openbsc/src/libbsc/system_information.c

@@ -619,7 +619,7 @@ static struct gsm48_si13_info si13_default = {
 	.cell_opts = {
 		.nmo 		= GPRS_NMO_II,
 		.t3168		= 2000,
-		.t3192		= 200,
+		.t3192		= 1500,
 		.drx_timer_max	= 3,
 		.bs_cv_max	= 15,
 		.ext_info_present = 0,

openbsc/src/libcommon/gsm_data_shared.c

@@ -192,7 +192,7 @@ static const struct gprs_rlc_cfg rlc_cfg_default = {
 		[RLC_T3142] = 20,
 		[RLC_T3169] = 5,
 		[RLC_T3191] = 5,
-		[RLC_T3193] = 200, /* 10ms */
+		[RLC_T3193] = 160, /* 10ms */
 		[RLC_T3195] = 5,
 		[RLC_N3101] = 10,
 		[RLC_N3103] = 4,