diff --git a/openbsc/src/bsc_init.c b/openbsc/src/bsc_init.c
index 1711aeb..a39bc19 100644
--- a/openbsc/src/bsc_init.c
+++ b/openbsc/src/bsc_init.c
@@ -378,11 +378,11 @@
 		4,	/* N3103 */
 		8,	/* N3105 */
 		15,	/* RLC CV countdown */
-	NM_ATT_IPACC_CODING_SCHEMES, 0, 2,  0x0f, 0x00,
+	NM_ATT_IPACC_CODING_SCHEMES, 0, 2,  0x0f, 0x00,	/* CS1..CS4 */
 	NM_ATT_IPACC_RLC_CFG_2, 0, 5,
-		0x00, 250,
-		0x00, 250,
-		2,	/* MCS2 */
+		0x00, 250,	/* T downlink TBF extension (0..500) */
+		0x00, 250,	/* T uplink TBF extension (0..500) */
+		2,	/* CS2 */
 #if 0
 	/* EDGE model only, breaks older models.
 	 * Should inquire the BTS capabilities */
@@ -886,6 +886,11 @@
 	/* patch RAC */
 	nanobts_attr_cell[3] = bts->gprs.rac;
 
+	if (bts->gprs.mode == BTS_GPRS_EGPRS) {
+		/* patch EGPRS coding schemes MCS 1..9 */
+		nanobts_attr_cell[29] = 0x8f;
+		nanobts_attr_cell[30] = 0xff;
+	}
 }
 
 static void bootstrap_rsl(struct gsm_bts_trx *trx)