First steps towards an open source implementation of the LE (Local Exchange) side of the ETSI/ITU V5 interface, in order to talk to Access Multiplexers (AN), such as Nokia EKSOS, DeTeWe ALIAN, etc.
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osmo-v5/v51_l1_fsm.c

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/* ITU-T G.964 Section 14.3.3 V5.1-intterface Layer 1 FSM - AN and LE */
/* (C) 2021 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "v5x_internal.h"
enum v51_l1_fsm_state {
V51_L1FSM_S_LE1_NORMAL,
V51_L1FSM_S_LE2_LOCALLY_DET_FAIL,
V51_L1FSM_S_LE3_REMOTELY_DET_FAIL,
V51_L1FSM_S_LE4_INTERNAL_FAIL,
};
/* TODO */