* add trau_mux implementation to relay from one incoming TRAU
channel to another one (simple voice call switching)
* add a way more generic E1 input layer, abstracting out the misdn
low-level interface. This also adds infrastructure for multiple TRX
in one BTS, as well as multiple BTS on one E1 link
* add a E1 subchannel multiplexer for sending multiple 16kbit sub-channels
one one 64kBps E1 channel
* add TRAU IDLE frame generation
* terminate bsc_hack in case there is a E1 / mISDN init error
* introduce 'e1_config.c' file with static configuration of our
E1 setup (which TRX/BTS is configured for which TEI/SAPI/E1). This should
later become a config file rather than a compiled C file.
WARNING: all this compiles but is not tested yet. Expect fix-up committs over
the next hours or so
diff --git a/include/openbsc/trau_frame.h b/include/openbsc/trau_frame.h
index 7f0a2e6..5923d4a 100644
--- a/include/openbsc/trau_frame.h
+++ b/include/openbsc/trau_frame.h
@@ -59,6 +59,7 @@
int decode_trau_frame(struct decoded_trau_frame *fr, const u_int8_t *trau_bits);
int encode_trau_frame(u_int8_t *trau_bits, const struct decoded_trau_frame *fr);
int trau_frame_up2down(struct decoded_trau_frame *fr);
+u_int8_t *trau_idle_frame(void);
#endif /* _TRAU_FRAME_H */