diff options
| -rw-r--r-- | src/llc.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/llc.cpp b/src/llc.cpp index 09242a55..d847c872 100644 --- a/src/llc.cpp +++ b/src/llc.cpp @@ -89,8 +89,8 @@ bool gprs_llc::is_user_data_frame(uint8_t *data, size_t len) if ((data[0] & 0x0f) == 1 /* GPRS_SAPI_GMM */) return false; - if ((data[0] & 0x0e) != 0xc0 /* LLC UI */) - /* It is not an LLC UI frame */ + if ((data[0] & 0xe0) != 0xc0 /* LLC UI */) + /* It is not an LLC UI frame, see TS 44.064, 6.3 */ return false; return true; |