| Harald Welte | 1fa60c8 | 2009-02-09 18:13:26 +0000 | [diff] [blame] | 1 | /* Simple TRAU frame reflector to route voice calls */ |
| 2 | |
| 3 | /* (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | /* The "TRAU mux map" defines which particular 16kbit sub-slot (in which E1 |
| 23 | * timeslot on which E1 interface) should be directly muxed to which other |
| 24 | * sub-slot. Entries in the mux map are always bi-directional. |
| 25 | * |
| 26 | * The idea of all this is to directly switch voice channels in the BSC |
| 27 | * from one phone to another. We do this right now since we don't support |
| 28 | * any external interface for voice channels, and in the future as an |
| 29 | * optimization to routing them externally. |
| 30 | */ |
| 31 | |
| 32 | /* map a TRAU mux map entry */ |
| 33 | int trau_mux_map(const struct gsm_e1_subslot *src, |
| 34 | const struct gsm_e1_subslot *dst); |
| Harald Welte | 26aa6a1 | 2009-02-19 15:14:23 +0000 | [diff] [blame^] | 35 | int trau_mux_map_lchan(const struct gsm_lchan *src, |
| 36 | const struct gsm_lchan *dst); |
| Harald Welte | 1fa60c8 | 2009-02-09 18:13:26 +0000 | [diff] [blame] | 37 | |
| 38 | /* unmap a TRAU mux map entry */ |
| 39 | int trau_mux_unmap(const struct gsm_e1_subslot *ss); |
| 40 | |
| 41 | /* we get called by subchan_demux */ |
| 42 | int trau_mux_input(struct gsm_e1_subslot *src_e1_ss, |
| 43 | const u_int8_t *trau_bits, int num_bits); |