--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/layer1/gtt_include/ctm/ctm_defines.h	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,95 @@
+/*
+*******************************************************************************
+*
+*      COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH
+*      90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100
+*
+*      The program(s) may be used and/or copied only with the
+*      written permission from Ericsson or in accordance
+*      with the terms and conditions stipulated in the agreement or
+*      contract under which the program(s) have been supplied.
+*
+*******************************************************************************
+*
+*      File          : ctm_defines.h
+*      Purpose       : Global constants for the Cellular Text Telephone Modem
+*
+*******************************************************************************
+*/
+#ifndef ctm_defines_h
+#define ctm_defines_h "$Id: $"
+
+#ifndef MAX
+#define MAX(A, B)  ((A) > (B) ? (A) : (B))
+#endif
+
+#define MAX_IDLE_SYMB        5  /* Number of Idle Symbols at End of Burst    */
+#define CHC_RATE             4  /* Rate of the Error Protection              */
+#define CHC_K                5  /* Constraint length of Error Protection     */
+#define SYMB_LEN            40  /* Length of one CTM symbol                  */
+
+/* The following constant determines whether the signal processing takes */
+/* place sample-by-sample or frame-by-frame (160 samples per frame)      */
+// #define LENGTH_TONE_VEC  160  /* signal frame size                         */
+#define LENGTH_TONE_VEC      1  /* signal frame size                         */
+
+/* Number of bits that are processed during each call of the main loop   */
+//LN March 13, 2002
+//#define LENGTH_TX_BITS  MAX(2, 2*LENGTH_TONE_VEC/SYMB_LEN) 
+#define LENGTH_TX_BITS   2
+//LN  
+
+#define BITS_PER_SYMB        8  /* bits per symbol                           */
+
+#define NCYCLES_0            2  /* Number of periods for symbol #0           */
+#define NCYCLES_1            3  /* Number of periods for symbol #1           */
+#define NCYCLES_2            4  /* Number of periods for symbol #2           */
+#define NCYCLES_3            5  /* Number of periods for symbol #3           */
+
+#define THRESHOLD_RELIABILITY_FOR_SUPPRESSING_OUTPUT  100
+#define THRESHOLD_RELIABILITY_FOR_XCORR                 1
+#define THRESHOLD_RELIABILITY_FOR_GOING_OFFLINE       100
+#define MAX_NUM_UNRELIABLE_GROSS_BITS                 400
+
+#define NUM_BITS_GUARD_INTERVAL   6       /* length of silence after a burst */
+
+#define WAIT_SYNC_REL_THRESHOLD_0 20316   /* = 0.62*32768 */
+#define WAIT_SYNC_REL_THRESHOLD_1 17039   /* = 0.52*32768 */
+#define WAIT_SYNC_REL_THRESHOLD_2 23265   /* = 0.71*32768 */
+#define RESYNC_REL_THRESHOLD      26542   /* = 0.81*32768 */
+
+#define GUARD_BIT_SYMBOL     0  /* "magic number" indicating that a          */
+//                              /* bit shall be muted                        */
+
+#define intlvB               8  /* Interleaver block length                  */
+#define intlvD               2  /* Interleaver block distance (interlace)    */
+
+#define demodSyncLns         1  /* Nr of demodulator sync lines              */
+#define deintSyncLns         0  /* Nr of deinterleaver sync lines            */
+
+#define IDLE_SYMB         0x16  /* UCS code for Idle Symbol                  */
+#define ENQU_SYMB         0x05  /* UCS code for Enquiry Symbol               */
+
+#if LENGTH_TONE_VEC==160
+#define ENQUIRY_TIMEOUT     20  /* number of frames for negotiation          */
+#else
+#define ENQUIRY_TIMEOUT   (1320/5) //19*160 
+#endif
+
+#define NUM_ENQUIRY_BURSTS   3  /* number of enquiry attempts                */
+
+#define NUM_MUTE_ROWS        4  /* duration of muting interval, 4 rows=80ms  */
+#define RESYNC_SEQ_LENGTH   32  /* must be a multiple of intlvB              */
+
+#define NUM_BITS_BETWEEN_RESYNC  352 // 352 = 320+32
+/* 352 is a multiple of CHC_RATE, intlvB, and BITS_PER_SYMB,                 */
+/* and must be greater than  intlvB*((intlvB-1)*intlvD+NUM_MUTE_ROWS         */
+
+#define SILENCE_PERIOD 32
+#define EARLY_SILENCE_PERIOD SILENCE_PERIOD-2 
+#define LATE_SILENCE_PERIOD SILENCE_PERIOD+2
+#define PLAYBACK_VOLUME      0xC000 /* volume for sound card playback        */
+
+//#define DEBUG_OUTPUT  /* comment this out for regular operation mode!     */
+
+#endif