iuup_cn_node.c: use 0x70 instead of 0xf0 in AMR hdr
in the AMR header first 4 bits is CMR (codec mode request). "7" means
AMR 12.2k. And "f" means "no mode request".
See RFC4867 Section 4.3.1.
diff --git a/src/libosmo-mgcp/iuup_cn_node.c b/src/libosmo-mgcp/iuup_cn_node.c
index 6a7e3b5..bb6cf4b 100644
--- a/src/libosmo-mgcp/iuup_cn_node.c
+++ b/src/libosmo-mgcp/iuup_cn_node.c
@@ -91,7 +91,7 @@
int is_comfort_noise = ((pdu->len - pre_hdr_len) == 9);
memmove(pdu->data + sizeof(*hdr) - 2, pdu->data, pre_hdr_len);
- ((uint8_t*)hdr)[2] = 0xf0;
+ ((uint8_t*)hdr)[2] = 0x70;
((uint8_t*)hdr)[3] = is_comfort_noise ? 0x44 : 0x3c;
msgb_pull(pdu, sizeof(*hdr) - 2);