laforge has uploaded this change for review. (
https://gerrit.osmocom.org/c/libosmocore/+/30762 )
Change subject: isdn: Add V.110 encoder/decoder
......................................................................
isdn: Add V.110 encoder/decoder
Change-Id: I1b5fd3847d3bfb0a0f763e0574893962ec699680
---
M include/Makefile.am
A include/osmocom/isdn/v110.h
M src/isdn/Makefile.am
M src/isdn/libosmoisdn.map
A src/isdn/v110.c
M tests/Makefile.am
M tests/testsuite.at
A tests/v110/test_frame.c
A tests/v110/test_frame.ok
A tests/v110/test_ra1.c
A tests/v110/test_ra1.ok
11 files changed, 949 insertions(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/62/30762/1
diff --git a/include/Makefile.am b/include/Makefile.am
index 35f7125..f857304 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -72,6 +72,7 @@
osmocom/ctrl/ports.h \
osmocom/isdn/i460_mux.h \
osmocom/isdn/lapd_core.h \
+ osmocom/isdn/v110.h \
osmocom/gprs/frame_relay.h \
osmocom/gprs/bssgp_bvc_fsm.h \
osmocom/gprs/gprs_bssgp.h \
diff --git a/include/osmocom/isdn/v110.h b/include/osmocom/isdn/v110.h
new file mode 100644
index 0000000..2f4742b
--- /dev/null
+++ b/include/osmocom/isdn/v110.h
@@ -0,0 +1,60 @@
+#pragma once
+
+#include <osmocom/core/bits.h>
+
+/* See Section 5.1.2.1 of ITU-T V.110 */
+#define MAX_D_BITS 48
+#define MAX_E_BITS 7
+#define MAX_S_BITS 9
+#define MAX_X_BITS 2
+
+struct osmo_v110_decoded_frame {
+ //enum osmo_v110_frame_type type;
+ //enum osmo_v110_frame_direction dir;
+
+ ubit_t d_bits[MAX_D_BITS];
+ ubit_t e_bits[MAX_E_BITS];
+ ubit_t s_bits[MAX_S_BITS];
+ ubit_t x_bits[MAX_X_BITS];
+};
+
+int osmo_v110_decode_frame(struct osmo_v110_decoded_frame *fr, const ubit_t
*ra_bits, size_t n_bits);
+int osmo_v110_encode_frame(ubit_t *ra_bits, size_t n_bits, const struct
osmo_v110_decoded_frame *fr);
+
+void osmo_v110_ubit_dump(FILE *outf, const ubit_t *fr, size_t in_len);
+
+
+
+struct osmo_v110_sync_ra1 {
+ unsigned int data_rate;
+ unsigned int intermediate_rate;
+ unsigned int user_data_chunk_bits;
+ int (*adapt_user_to_ir)(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len);
+ int (*adapt_ir_to_user)(ubit_t *d_out, size_t out_len, const struct
osmo_v110_decoded_frame *fr);
+};
+
+enum osmo_v100_sync_ra1_rate {
+ OSMO_V110_SYNC_RA1_600,
+ OSMO_V110_SYNC_RA1_1200,
+ OSMO_V110_SYNC_RA1_2400,
+ OSMO_V110_SYNC_RA1_4800,
+ OSMO_V110_SYNC_RA1_7200,
+ OSMO_V110_SYNC_RA1_9600,
+ OSMO_V110_SYNC_RA1_12000,
+ OSMO_V110_SYNC_RA1_14400,
+ OSMO_V110_SYNC_RA1_19200,
+ OSMO_V110_SYNC_RA1_24000,
+ OSMO_V110_SYNC_RA1_28800,
+ OSMO_V110_SYNC_RA1_38400,
+ _NUM_OSMO_V110_SYNC_RA1
+};
+
+extern const struct osmo_v110_sync_ra1 sync_ra1[_NUM_OSMO_V110_SYNC_RA1];
+
+
+
+struct osmo_v110_instance {
+ /* pointer to the sync rate adaptation */
+ const struct osmo_v110_sync_ra1 *sync_ra1;
+};
+
diff --git a/src/isdn/Makefile.am b/src/isdn/Makefile.am
index 95ec0ff..010338a 100644
--- a/src/isdn/Makefile.am
+++ b/src/isdn/Makefile.am
@@ -13,7 +13,7 @@
noinst_LTLIBRARIES = libisdnint.la
lib_LTLIBRARIES = libosmoisdn.la
-libisdnint_la_SOURCES = i460_mux.c lapd_core.c
+libisdnint_la_SOURCES = i460_mux.c lapd_core.c v110.c
libisdnint_la_LDFLAGS = -no-undefined
libisdnint_la_LIBADD = $(top_builddir)/src/libosmocore.la
diff --git a/src/isdn/libosmoisdn.map b/src/isdn/libosmoisdn.map
index 76e8c81..e983668 100644
--- a/src/isdn/libosmoisdn.map
+++ b/src/isdn/libosmoisdn.map
@@ -20,5 +20,11 @@
osmo_i460_subchan_del;
osmo_i460_ts_init;
+osmo_v110_decode_frame;
+osmo_v110_encode_frame;
+osmo_v110_ubit_dump;
+sync_ra1;
+
+
local: *;
};
diff --git a/src/isdn/v110.c b/src/isdn/v110.c
new file mode 100644
index 0000000..e3e50d0
--- /dev/null
+++ b/src/isdn/v110.c
@@ -0,0 +1,497 @@
+/* V.110 frames according to ITU-T V.110
+ *
+ * This code implements the following functionality:
+ * - parsing/encoding of osmo_v110_decoded_frame from/to actual 80-bit V.110
frame
+ * - synchronous rate adapting of user bit rate to V.110 D-bits as per Table 6
+ *
+ * It is (at least initially) a very "naive" implementation, as it first and
foremost
+ * aims to be functional and correct, rather than efficient in any way. Hence
it
+ * operates on unpacked bits (ubit_t, 1 bit per byte), and has various
intermediate
+ * representations and indirect function calls. If needed, a more optimized
variant
+ * can always be developed later on.
+ */
+
+/* (C) 2022 by Harald Welte <[email protected]>
+ * All Rights Reserved
+ */
+
+#include <stdint.h>
+#include <errno.h>
+
+#include <osmocom/core/bits.h>
+
+#include <osmocom/isdn/v110.h>
+
+/*************************************************************************
+ * V.110 frame decoding/encoding (ubits <-> struct with D/S/X/E bits)
+ *************************************************************************/
+
+/*! Decode a 80-bit V.110 frame present as 80 ubits into a struct
osmo_v110_decoded_frame.
+ * \param[out] caller-allocated output data structure, filled by this function
+ * \param[in] ra_bits One V.110 frame as 80 unpacked bits. */
+int osmo_v110_decode_frame(struct osmo_v110_decoded_frame *fr, const ubit_t
*ra_bits, size_t n_bits)
+{
+ if (n_bits < 80)
+ return -EINVAL;
+
+ /* X1 .. X2 */
+ fr->x_bits[0] = ra_bits[2*8 + 7];
+ fr->x_bits[1] = ra_bits[7*8 + 7];
+
+ /* S1, S3, S4, S6, S8, S9 */
+ fr->s_bits[0] = ra_bits[1*8 + 7];
+ fr->s_bits[2] = ra_bits[3*8 + 7];
+ fr->s_bits[3] = ra_bits[4*8 + 7];
+ fr->s_bits[5] = ra_bits[6*8 + 7];
+ fr->s_bits[7] = ra_bits[8*8 + 7];
+ fr->s_bits[8] = ra_bits[9*8 + 7];
+
+ /* E1 .. E7 */
+ memcpy(fr->e_bits, ra_bits + 5*8 + 1, 7);
+
+ /* D-bits */
+ memcpy(fr->d_bits + 0*6, ra_bits + 1*8 + 1, 6);
+ memcpy(fr->d_bits + 1*6, ra_bits + 2*8 + 1, 6);
+ memcpy(fr->d_bits + 2*6, ra_bits + 3*8 + 1, 6);
+ memcpy(fr->d_bits + 3*6, ra_bits + 4*8 + 1, 6);
+
+ memcpy(fr->d_bits + 4*6, ra_bits + 6*8 + 1, 6);
+ memcpy(fr->d_bits + 5*6, ra_bits + 7*8 + 1, 6);
+ memcpy(fr->d_bits + 6*6, ra_bits + 8*8 + 1, 6);
+ memcpy(fr->d_bits + 7*6, ra_bits + 9*8 + 1, 6);
+
+ return 0;
+}
+
+/*! Encode a struct osmo_v110_decoded_frame into an 80-bit V.110 frame as
ubits.
+ * \param[out] ra_bits caller-provided output buffer at leat 80 ubits large
+ * \param[in] n_bits length of ra_bits. Must be at least 80.
+ * \param[in] input data structure
+ * \returns number of bits written to ra_bits */
+int osmo_v110_encode_frame(ubit_t *ra_bits, size_t n_bits, const struct
osmo_v110_decoded_frame *fr)
+{
+ if (n_bits < 80)
+ return -ENOSPC;
+
+ /* alignment pattern */
+ memset(ra_bits+0, 0, 8);
+ for (int i = 1; i < 10; i++)
+ ra_bits[i*8] = 1;
+
+ /* X1 .. X2 */
+ ra_bits[2*8 +7] = fr->x_bits[0];
+ ra_bits[7*8 +7] = fr->x_bits[1];
+
+ /* S1, S3, S4, S6, S8, S9 */
+ ra_bits[1*8 + 7] = fr->s_bits[0];
+ ra_bits[3*8 + 7] = fr->s_bits[2];
+ ra_bits[4*8 + 7] = fr->s_bits[3];
+ ra_bits[6*8 + 7] = fr->s_bits[5];
+ ra_bits[8*8 + 7] = fr->s_bits[7];
+ ra_bits[9*8 + 7] = fr->s_bits[8];
+
+ /* E1 .. E7 */
+ memcpy(ra_bits + 5*8 + 1, fr->e_bits, 7);
+
+ /* D-bits */
+ memcpy(ra_bits + 1*8 + 1, fr->d_bits + 0*6, 6);
+ memcpy(ra_bits + 2*8 + 1, fr->d_bits + 1*6, 6);
+ memcpy(ra_bits + 3*8 + 1, fr->d_bits + 2*6, 6);
+ memcpy(ra_bits + 4*8 + 1, fr->d_bits + 3*6, 6);
+
+ memcpy(ra_bits + 6*8 + 1, fr->d_bits + 4*6, 6);
+ memcpy(ra_bits + 7*8 + 1, fr->d_bits + 5*6, 6);
+ memcpy(ra_bits + 8*8 + 1, fr->d_bits + 6*6, 6);
+ memcpy(ra_bits + 9*8 + 1, fr->d_bits + 7*6, 6);
+
+ return 10 * 8;
+}
+
+/*! Print a encoded V.110 frame in the same table-like structure as the spec.
*/
+void osmo_v110_ubit_dump(FILE *outf, const ubit_t *fr, size_t in_len)
+{
+ if (in_len < 80)
+ fprintf(outf, "short input data\n");
+
+ for (unsigned int octet = 0; octet < 10; octet++) {
+ fprintf(outf, "%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\n",
+ fr[octet*8+0], fr[octet*8+1], fr[octet*8+2],
fr[octet*8+3],
+ fr[octet*8+4], fr[octet*8+5], fr[octet*8+6],
fr[octet*8+7]);
+ }
+}
+
+/*************************************************************************
+ * RA1 synchronous rate adaptation
+ *************************************************************************/
+
+/* I actually couldn't find any reference as to the value of F(ill) bits */
+#define F 1
+
+/*! Adapt from 6 synchronous 600bit/s input bits to a decoded V.110 frame.
+ * \param[out] fr caller-allocated output frame to which E+D bits are stored
+ * \param[in] d_in input user bits
+ * \param[in] in_len number of bits in d_in. Must be 6.
+ * \returns 0 on success; negative in case of error. */
+static int v110_adapt_600_to_IR8000(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len)
+{
+ if (in_len != 6)
+ return -EINVAL;
+
+ /* Table 6a / V.110 */
+ fr->e_bits[0] = 1;
+ fr->e_bits[1] = 0;
+ fr->e_bits[2] = 0;
+ for (int i = 0; i < 6; i++)
+ memset(fr->d_bits + i*8, d_in[i], 8);
+
+ return 0;
+}
+
+static int v110_adapt_IR8000_to_600(ubit_t *d_out, size_t out_len, const
struct osmo_v110_decoded_frame *fr)
+{
+ if (out_len < 6)
+ return -ENOSPC;
+
+ if (fr->e_bits[0] != 1 || fr->e_bits[1] != 0 || fr->e_bits[2] != 0)
+ return -EINVAL;
+
+ for (int i = 0; i < 6; i++) {
+ /* we only use one of the bits, not some kind of consistency
check or majority vote */
+ d_out[i] = fr->d_bits[i*8];
+ }
+
+ return 6;
+}
+
+/*! Adapt from 12 synchronous 1200bit/s input bits to a decoded V.110 frame.
+ * \param[out] fr caller-allocated output frame to which E+D bits are stored
+ * \param[in] d_in input user bits
+ * \param[in] in_len number of bits in d_in. Must be 12.
+ * \returns 0 on success; negative in case of error. */
+static int v110_adapt_1200_to_IR8000(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len)
+{
+ if (in_len != 12)
+ return -EINVAL;
+
+ /* Table 6b / V.110 */
+ fr->e_bits[0] = 0;
+ fr->e_bits[1] = 1;
+ fr->e_bits[2] = 0;
+ for (int i = 0; i < 12; i++)
+ memset(fr->d_bits + i*4, d_in[i], 4);
+
+ return 0;
+}
+
+static int v110_adapt_IR8000_to_1200(ubit_t *d_out, size_t out_len, const
struct osmo_v110_decoded_frame *fr)
+{
+ if (out_len < 12)
+ return -ENOSPC;
+
+ if (fr->e_bits[0] != 0 || fr->e_bits[1] != 1 || fr->e_bits[2] != 0)
+ return -EINVAL;
+
+ for (int i = 0; i < 12; i++) {
+ /* we only use one of the bits, not some kind of consistency
check or majority vote */
+ d_out[i] = fr->d_bits[i*4];
+ }
+
+ return 12;
+}
+
+/*! Adapt from 24 synchronous 2400bit/s input bits to a decoded V.110 frame.
+ * \param[out] fr caller-allocated output frame to which E+D bits are stored
+ * \param[in] d_in input user bits
+ * \param[in] in_len number of bits in d_in. Must be 24.
+ * \returns 0 on success; negative in case of error. */
+static int v110_adapt_2400_to_IR8000(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len)
+{
+ if (in_len != 24)
+ return -EINVAL;
+
+ /* Table 6c / V.110 */
+ fr->e_bits[0] = 1;
+ fr->e_bits[1] = 1;
+ fr->e_bits[2] = 0;
+ for (int i = 0; i < 24; i++) {
+ fr->d_bits[i*2 + 0] = d_in[i];
+ fr->d_bits[i*2 + 1] = d_in[i];
+ }
+
+ return 0;
+}
+
+static int v110_adapt_IR8000_to_2400(ubit_t *d_out, size_t out_len, const
struct osmo_v110_decoded_frame *fr)
+{
+ if (out_len < 24)
+ return -ENOSPC;
+
+ if (fr->e_bits[1] != 1 || fr->e_bits[1] != 1 || fr->e_bits[2] != 0)
+ return -EINVAL;
+
+ for (int i = 0; i < 24; i++) {
+ /* we only use one of the bits, not some kind of consistency
check or majority vote */
+ d_out[i] = fr->d_bits[i*2];
+ }
+
+ return 24;
+}
+
+/*! Adapt from 36 synchronous N x 3600bit/s input bits to a decoded V.110
frame.
+ * \param[out] fr caller-allocated output frame to which E+D bits are stored
+ * \param[in] d_in input user bits
+ * \param[in] in_len number of bits in d_in. Must be 36.
+ * \returns 0 on success; negative in case of error. */
+static int v110_adapt_Nx3600_to_IR(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len)
+{
+ int d_idx = 0;
+
+ if (in_len != 36)
+ return -EINVAL;
+
+ /* Table 6d / V.110 */
+ fr->e_bits[0] = 1;
+ fr->e_bits[1] = 0;
+ fr->e_bits[2] = 1;
+
+ memcpy(fr->d_bits + d_idx, d_in + 0, 10); d_idx += 10; /* D1..D10 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 10, 2); d_idx += 2; /* D11..D12 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 12, 2); d_idx += 2; /* D13..D14 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 14, 14); d_idx += 14; /* D15..D28 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 28, 2); d_idx += 2; /* D29..D30 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 30, 2); d_idx += 2; /* D31..D32 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 32, 4); d_idx += 4; /* D33..D36 */
+
+ OSMO_ASSERT(d_idx == 48);
+
+ return 0;
+}
+
+static int v110_adapt_IR_to_Nx3600(ubit_t *d_out, size_t out_len, const struct
osmo_v110_decoded_frame *fr)
+{
+ int d_idx = 0;
+
+ if (out_len < 36)
+ return -ENOSPC;
+
+ if (fr->e_bits[0] != 1 || fr->e_bits[1] != 0 || fr->e_bits[2] != 1)
+ return -EINVAL;
+
+ memcpy(d_out + 0, fr->d_bits + d_idx, 10); d_idx += 10; /* D1..D10 */
+ d_idx += 2;
+ memcpy(d_out + 10, fr->d_bits + d_idx, 2); d_idx += 2; /* D11..D12 */
+ d_idx += 2;
+ memcpy(d_out + 12, fr->d_bits + d_idx, 2); d_idx += 2; /* D13..D14 */
+ d_idx += 2;
+ memcpy(d_out + 14, fr->d_bits + d_idx, 14); d_idx += 14;/* D15..D28 */
+ d_idx += 2;
+ memcpy(d_out + 28, fr->d_bits + d_idx, 2); d_idx += 2; /* D29..D30 */
+ d_idx += 2;
+ memcpy(d_out + 30, fr->d_bits + d_idx, 2); d_idx += 2; /* D31..D32 */
+ d_idx += 2;
+ memcpy(d_out + 32, fr->d_bits + d_idx, 4); d_idx += 4; /* D33..D36 */
+
+ OSMO_ASSERT(d_idx == 48);
+
+ return 36;
+}
+
+
+/*! Adapt from 48 synchronous N x 4800bit/s input bits to a decoded V.110
frame.
+ * \param[out] fr caller-allocated output frame to which E+D bits are stored
+ * \param[in] d_in input user bits
+ * \param[in] in_len number of bits in d_in. Must be 48.
+ * \returns 0 on success; negative in case of error. */
+static int v110_adapt_Nx4800_to_IR(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len)
+{
+ if (in_len != 48)
+ return -EINVAL;
+
+ /* Table 6e / V.110 */
+ fr->e_bits[0] = 0;
+ fr->e_bits[1] = 1;
+ fr->e_bits[2] = 1;
+
+ memcpy(fr->d_bits, d_in, 48);
+
+ return 0;
+}
+
+static int v110_adapt_IR_to_Nx4800(ubit_t *d_out, size_t out_len, const struct
osmo_v110_decoded_frame *fr)
+{
+ if (out_len < 48)
+ return -ENOSPC;
+
+ if (fr->e_bits[0] != 0 || fr->e_bits[1] != 1 || fr->e_bits[2] != 1)
+ return -EINVAL;
+
+ memcpy(d_out, fr->d_bits, 48);
+
+ return 48;
+}
+
+/*! Adapt from 30 synchronous N x 12000bit/s input bits to a decoded V.110
frame.
+ * \param[out] fr caller-allocated output frame to which E+D bits are stored
+ * \param[in] d_in input user bits
+ * \param[in] in_len number of bits in d_in. Must be 30.
+ * \returns 0 on success; negative in case of error. */
+static int v110_adapt_Nx12000_to_IR(struct osmo_v110_decoded_frame *fr, const
ubit_t *d_in, size_t in_len)
+{
+ int d_idx = 0;
+
+ if (in_len != 30)
+ return -EINVAL;
+
+ /* Table 6f / V.110 */
+ fr->e_bits[0] = 0;
+ fr->e_bits[1] = 0;
+ fr->e_bits[2] = 1;
+
+ memcpy(fr->d_bits + d_idx, d_in + 0, 10); d_idx += 10; /* D1..D10 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 10, 2); d_idx += 2; /* D11..D12 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 12, 2); d_idx += 2; /* D13..D14 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ fr->d_bits[d_idx++] = d_in[14]; /* D15 */
+ memset(fr->d_bits + d_idx, F, 3); d_idx += 3;
+ memcpy(fr->d_bits + d_idx, d_in + 15, 10); d_idx += 10; /* D16..D25 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 25, 2); d_idx += 2; /* D26..D27 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ memcpy(fr->d_bits + d_idx, d_in + 27, 2); d_idx += 2; /* D28..D29 */
+ memset(fr->d_bits + d_idx, F, 2); d_idx += 2;
+ fr->d_bits[d_idx++] = d_in[29]; /* D30 */
+ memset(fr->d_bits + d_idx, F, 3); d_idx += 3;
+
+ OSMO_ASSERT(d_idx == 48);
+
+ return 0;
+}
+
+static int v110_adapt_IR_to_Nx12000(ubit_t *d_out, size_t out_len, const
struct osmo_v110_decoded_frame *fr)
+{
+ int d_idx = 0;
+
+ if (out_len < 30)
+ return -ENOSPC;
+
+ if (fr->e_bits[0] != 0 || fr->e_bits[1] != 0 || fr->e_bits[2] != 1)
+ return -EINVAL;
+
+ memcpy(d_out + 0, fr->d_bits + d_idx, 10); d_idx += 10; /* D1..D10 */
+ d_idx += 2;
+ memcpy(d_out + 10, fr->d_bits + d_idx, 2); d_idx += 2; /* D11..D12 */
+ d_idx += 2;
+ memcpy(d_out + 12, fr->d_bits + d_idx, 2); d_idx += 2; /* D13..D14 */
+ d_idx += 2;
+ d_out[14] = fr->d_bits[d_idx++]; /* D15 */
+ d_idx += 3;
+ memcpy(d_out + 15, fr->d_bits + d_idx, 10); d_idx += 10;/* D16..D25 */
+ d_idx += 2;
+ memcpy(d_out + 25, fr->d_bits + d_idx, 2); d_idx += 2; /* D26..D27 */
+ d_idx += 2;
+ memcpy(d_out + 27, fr->d_bits + d_idx, 2); d_idx += 2; /* D28..D29 */
+ d_idx += 2;
+ d_out[29] = fr->d_bits[d_idx++]; /* D30 */
+ d_idx += 3;
+
+ OSMO_ASSERT(d_idx == 48);
+
+ return 30;
+}
+
+
+/* all of the synchronous data signalling rates; see Table 1/V.110 */
+const struct osmo_v110_sync_ra1 sync_ra1[_NUM_OSMO_V110_SYNC_RA1] = {
+ [OSMO_V110_SYNC_RA1_600] = {
+ .data_rate = 600,
+ .intermediate_rate = 8000,
+ .user_data_chunk_bits = 6,
+ .adapt_user_to_ir = v110_adapt_600_to_IR8000,
+ .adapt_ir_to_user = v110_adapt_IR8000_to_600,
+ },
+ [OSMO_V110_SYNC_RA1_1200] = {
+ .data_rate = 1200,
+ .intermediate_rate = 8000,
+ .user_data_chunk_bits = 12,
+ .adapt_user_to_ir = v110_adapt_1200_to_IR8000,
+ .adapt_ir_to_user = v110_adapt_IR8000_to_1200,
+ },
+ [OSMO_V110_SYNC_RA1_2400] = {
+ .data_rate = 2400,
+ .intermediate_rate = 8000,
+ .user_data_chunk_bits = 24,
+ .adapt_user_to_ir = v110_adapt_2400_to_IR8000,
+ .adapt_ir_to_user = v110_adapt_IR8000_to_2400,
+ },
+ [OSMO_V110_SYNC_RA1_4800] = {
+ .data_rate = 4800,
+ .intermediate_rate = 8000,
+ .user_data_chunk_bits = 48,
+ .adapt_user_to_ir = v110_adapt_Nx4800_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx4800,
+ },
+ [OSMO_V110_SYNC_RA1_7200] = {
+ .data_rate = 7200,
+ .intermediate_rate = 16000,
+ .user_data_chunk_bits = 36,
+ .adapt_user_to_ir = v110_adapt_Nx3600_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx3600,
+ },
+ [OSMO_V110_SYNC_RA1_9600] = {
+ .data_rate = 9600,
+ .intermediate_rate = 16000,
+ .user_data_chunk_bits = 48,
+ .adapt_user_to_ir = v110_adapt_Nx4800_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx4800,
+ },
+ [OSMO_V110_SYNC_RA1_12000] = {
+ .data_rate = 12000,
+ .intermediate_rate = 32000,
+ .user_data_chunk_bits = 30,
+ .adapt_user_to_ir = v110_adapt_Nx12000_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx12000,
+ },
+ [OSMO_V110_SYNC_RA1_14400] = {
+ .data_rate = 14400,
+ .intermediate_rate = 32000,
+ .user_data_chunk_bits = 36,
+ .adapt_user_to_ir = v110_adapt_Nx3600_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx3600,
+ },
+ [OSMO_V110_SYNC_RA1_19200] = {
+ .data_rate = 19200,
+ .intermediate_rate = 32000,
+ .user_data_chunk_bits = 48,
+ .adapt_user_to_ir = v110_adapt_Nx4800_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx4800,
+ },
+ [OSMO_V110_SYNC_RA1_24000] = {
+ .data_rate = 24000,
+ .intermediate_rate = 64000,
+ .user_data_chunk_bits = 30,
+ .adapt_user_to_ir = v110_adapt_Nx12000_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx12000,
+ },
+ [OSMO_V110_SYNC_RA1_28800] = {
+ .data_rate = 28800,
+ .intermediate_rate = 64000,
+ .user_data_chunk_bits = 36,
+ .adapt_user_to_ir = v110_adapt_Nx3600_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx3600,
+ },
+ [OSMO_V110_SYNC_RA1_38400] = {
+ .data_rate = 38400,
+ .intermediate_rate = 64000,
+ .user_data_chunk_bits = 48,
+ .adapt_user_to_ir = v110_adapt_Nx4800_to_IR,
+ .adapt_ir_to_user = v110_adapt_IR_to_Nx4800,
+ },
+};
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 46464e1..a5c5538 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -338,6 +338,12 @@
iuup_iuup_test_SOURCES = iuup/iuup_test.c
iuup_iuup_test_LDADD = $(LDADD) $(top_builddir)/src/gsm/libosmogsm.la
+v110_test_frame_SOURCES = iuup/test_frame.c
+v110_test_frame_LDADD = $(LDADD) $(top_builddir)/src/gsm/libosmoisdn.la
+
+v110_test_ra1_SOURCES = iuup/test_ra1.c
+v110_test_ra1_LDADD = $(LDADD) $(top_builddir)/src/gsm/libosmoisdn.la
+
# The `:;' works around a Bash 3.2 bug when the output is not writeable.
$(srcdir)/package.m4: $(top_srcdir)/configure.ac
:;{ \
@@ -435,6 +441,8 @@
smscb/smscb_test.ok \
smscb/gsm0341_test.ok \
smscb/cbsp_test.ok \
+ v110/test_frame.ok \
+ v110/test_ra1.ok \
$(NULL)
if ENABLE_LIBSCTP
@@ -638,6 +646,10 @@
>$(srcdir)/time_cc/time_cc_test.ok
iuup/iuup_test \
>$(srcdir)/iuup/iuup_test.ok
+ v110/test_frame \
+ >$(srcdir)/v110/test_frame.ok
+ v110/test_ra1 \
+ >$(srcdir)/v110/test_ra1.ok
check-local: atconfig $(TESTSUITE)
[ -e /proc/cpuinfo ] && cat /proc/cpuinfo
diff --git a/tests/testsuite.at b/tests/testsuite.at
index 6b2e75f..c1fd805 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -484,3 +484,15 @@
cat $abs_srcdir/iuup/iuup_test.ok > expout
AT_CHECK([$abs_top_builddir/tests/iuup/iuup_test], [0], [expout], [ignore])
AT_CLEANUP
+
+AT_SETUP([v110_test_frame])
+AT_KEYWORDS([v110_test_frame])
+cat $abs_srcdir/v110/test_frame.ok > expout
+AT_CHECK([$abs_top_builddir/tests/v110/test_frame], [], [expout],[])
+AT_CLEANUP
+
+AT_SETUP([v110_test_ra1])
+AT_KEYWORDS([v110_test_ra1])
+cat $abs_srcdir/v110/test_ra1.ok > expout
+AT_CHECK([$abs_top_builddir/tests/v110/test_ra1], [], [expout],[])
+AT_CLEANUP
diff --git a/tests/v110/test_frame.c b/tests/v110/test_frame.c
new file mode 100644
index 0000000..7630028
--- /dev/null
+++ b/tests/v110/test_frame.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <osmocom/core/bits.h>
+#include <osmocom/isdn/v110.h>
+
+
+static void test_frame_enc(void)
+{
+ struct osmo_v110_decoded_frame fr;
+ ubit_t bits[80];
+ unsigned int i;
+
+ memset(&fr, 0, sizeof(fr));
+
+ /* we abuse the fact that ubit_t is 8bit so we can actually
+ * store integer values to clearly identify which bit ends up where */
+
+ /* D1..D48: 101..148 */
+ for (i = 0; i < ARRAY_SIZE(fr.d_bits); i++)
+ fr.d_bits[i] = 101 + i;
+ /* E1..E7: 201..207 */
+ for (i = 0; i < ARRAY_SIZE(fr.e_bits); i++)
+ fr.e_bits[i] = 201 + i;
+ /* S1..S9: 211..219 */
+ for (i = 0; i < ARRAY_SIZE(fr.s_bits); i++)
+ fr.s_bits[i] = 211 + i;
+ /* X1..X2: 221..222 */
+ for (i = 0; i < ARRAY_SIZE(fr.x_bits); i++)
+ fr.x_bits[i] = 221 + i;
+
+ /* run encoder and dump to stdout */
+ memset(bits, 0xff, sizeof(bits));
+ osmo_v110_encode_frame(bits, sizeof(bits), &fr);
+ osmo_v110_ubit_dump(stdout, bits, sizeof(bits));
+
+ /* run decoder on what we just encoded */
+ memset(&fr, 0, sizeof(fr));
+ v110_decode_frame(&fr, bits, sizeof(bits));
+
+ /* re-encode and dump again 'expout' will match it. */
+ memset(bits, 0xff, sizeof(bits));
+ osmo_v110_encode_frame(bits, sizeof(bits), &fr);
+ osmo_v110_ubit_dump(stdout, bits, sizeof(bits));
+}
+
+
+int main(int argc, char **argv)
+{
+ test_frame_enc();
+}
+
diff --git a/tests/v110/test_frame.ok b/tests/v110/test_frame.ok
new file mode 100644
index 0000000..ecefaa8
--- /dev/null
+++ b/tests/v110/test_frame.ok
@@ -0,0 +1,20 @@
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 211
+1 107 108 109 110 111 112 221
+1 113 114 115 116 117 118 213
+1 119 120 121 122 123 124 214
+1 201 202 203 204 205 206 207
+1 125 126 127 128 129 130 216
+1 131 132 133 134 135 136 222
+1 137 138 139 140 141 142 218
+1 143 144 145 146 147 148 219
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 211
+1 107 108 109 110 111 112 221
+1 113 114 115 116 117 118 213
+1 119 120 121 122 123 124 214
+1 201 202 203 204 205 206 207
+1 125 126 127 128 129 130 216
+1 131 132 133 134 135 136 222
+1 137 138 139 140 141 142 218
+1 143 144 145 146 147 148 219
diff --git a/tests/v110/test_ra1.c b/tests/v110/test_ra1.c
new file mode 100644
index 0000000..4260a1a
--- /dev/null
+++ b/tests/v110/test_ra1.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <osmocom/core/bits.h>
+#include <osmocom/isdn/v110.h>
+
+
+static void test_ra1(enum osmo_v100_sync_ra1_rate rate)
+{
+ const struct osmo_v110_sync_ra1 *ra1 = &sync_ra1[rate];
+ struct osmo_v110_decoded_frame fr;
+ ubit_t user_bits[48];
+ ubit_t bits[80];
+ unsigned int i;
+ int rc;
+
+ printf("\n======= User data rate %u\n", ra1->data_rate);
+
+ /* we abuse the fact that ubit_t is 8bit so we can actually
+ * store integer values to clearly identify which bit ends up where */
+ memset(user_bits, 0xFE, sizeof(user_bits));
+ for (i = 0; i < ra1->user_data_chunk_bits; i++)
+ user_bits[i] = 101 + i;
+
+ printf("user_bits: ");
+ for (i = 0; i < ra1->user_data_chunk_bits; i++)
+ printf("%03d ", user_bits[i]);
+ printf("\n");
+
+ /* generate the decoded v.110 frame */
+ memset(&fr, 0, sizeof(fr));
+ rc = ra1->adapt_user_to_ir(&fr, user_bits, ra1->user_data_chunk_bits);
+ OSMO_ASSERT(rc == 0);
+
+ /* run encoder and dump to stdout */
+ memset(bits, 0xff, sizeof(bits));
+ osmo_v110_encode_frame(bits, sizeof(bits), &fr);
+ printf("dumping %u encoded bits in V.110 frame:\n",
ra1->user_data_chunk_bits);
+ osmo_v110_ubit_dump(stdout, bits, sizeof(bits));
+
+ /* run decoder on what we just encoded */
+ memset(&fr, 0, sizeof(fr));
+ osmo_v110_decode_frame(&fr, bits, sizeof(bits));
+ printf("dumping re-decoded V.110 frame:\n");
+ printf("E-bits: %s\n", osmo_hexdump(fr.e_bits, sizeof(fr.e_bits)));
+ printf("S-bits: %s\n", osmo_hexdump(fr.s_bits, sizeof(fr.s_bits)));
+
+ /* re-encode and dump again 'expout' will match it. */
+ memset(user_bits, 0xff, sizeof(user_bits));
+ rc = ra1->adapt_ir_to_user(user_bits, sizeof(user_bits), &fr);
+ if (rc != ra1->user_data_chunk_bits) {
+ fprintf(stderr, "ERROR: adapt_ir_to_user() returned %d,
expected %u\n", rc,
+ ra1->user_data_chunk_bits);
+ exit(23);
+ }
+ fprintf(stdout, "re-decoded user bits: ");
+ for (i = 0; i < ra1->user_data_chunk_bits; i++)
+ printf("%03d ", user_bits[i]);
+ printf("\n");
+}
+
+
+int main(int argc, char **argv)
+{
+ for (int i = 0; i < _NUM_OSMO_V110_SYNC_RA1; i++)
+ test_ra1(i);
+}
+
diff --git a/tests/v110/test_ra1.ok b/tests/v110/test_ra1.ok
new file mode 100644
index 0000000..8a61fc3
--- /dev/null
+++ b/tests/v110/test_ra1.ok
@@ -0,0 +1,216 @@
+
+======= User data rate 600
+user_bits: 101 102 103 104 105 106
+dumping 6 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 101 101 101 101 101 0
+1 101 101 102 102 102 102 0
+1 102 102 102 102 103 103 0
+1 103 103 103 103 103 103 0
+1 1 0 0 0 0 0 0
+1 104 104 104 104 104 104 0
+1 104 104 105 105 105 105 0
+1 105 105 105 105 106 106 0
+1 106 106 106 106 106 106 0
+dumping re-decoded V.110 frame:
+E-bits: 01 00 00 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106
+
+======= User data rate 1200
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112
+dumping 12 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 101 101 101 102 102 0
+1 102 102 103 103 103 103 0
+1 104 104 104 104 105 105 0
+1 105 105 106 106 106 106 0
+1 0 1 0 0 0 0 0
+1 107 107 107 107 108 108 0
+1 108 108 109 109 109 109 0
+1 110 110 110 110 111 111 0
+1 111 111 112 112 112 112 0
+dumping re-decoded V.110 frame:
+E-bits: 00 01 00 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112
+
+======= User data rate 2400
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124
+dumping 24 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 101 102 102 103 103 0
+1 104 104 105 105 106 106 0
+1 107 107 108 108 109 109 0
+1 110 110 111 111 112 112 0
+1 1 1 0 0 0 0 0
+1 113 113 114 114 115 115 0
+1 116 116 117 117 118 118 0
+1 119 119 120 120 121 121 0
+1 122 122 123 123 124 124 0
+dumping re-decoded V.110 frame:
+E-bits: 01 01 00 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124
+
+======= User data rate 4800
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137
138 139 140 141 142 143 144 145 146 147 148
+dumping 48 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 111 112 0
+1 113 114 115 116 117 118 0
+1 119 120 121 122 123 124 0
+1 0 1 1 0 0 0 0
+1 125 126 127 128 129 130 0
+1 131 132 133 134 135 136 0
+1 137 138 139 140 141 142 0
+1 143 144 145 146 147 148 0
+dumping re-decoded V.110 frame:
+E-bits: 00 01 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136 137 138 139 140 141 142 143 144 145 146 147 148
+
+======= User data rate 7200
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
+dumping 36 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 1 1 0
+1 111 112 1 1 113 114 0
+1 1 1 115 116 117 118 0
+1 1 0 1 0 0 0 0
+1 119 120 121 122 123 124 0
+1 125 126 127 128 1 1 0
+1 129 130 1 1 131 132 0
+1 1 1 133 134 135 136 0
+dumping re-decoded V.110 frame:
+E-bits: 01 00 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136
+
+======= User data rate 9600
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137
138 139 140 141 142 143 144 145 146 147 148
+dumping 48 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 111 112 0
+1 113 114 115 116 117 118 0
+1 119 120 121 122 123 124 0
+1 0 1 1 0 0 0 0
+1 125 126 127 128 129 130 0
+1 131 132 133 134 135 136 0
+1 137 138 139 140 141 142 0
+1 143 144 145 146 147 148 0
+dumping re-decoded V.110 frame:
+E-bits: 00 01 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136 137 138 139 140 141 142 143 144 145 146 147 148
+
+======= User data rate 12000
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130
+dumping 30 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 1 1 0
+1 111 112 1 1 113 114 0
+1 1 1 115 1 1 1 0
+1 0 0 1 0 0 0 0
+1 116 117 118 119 120 121 0
+1 122 123 124 125 1 1 0
+1 126 127 1 1 128 129 0
+1 1 1 130 1 1 1 0
+dumping re-decoded V.110 frame:
+E-bits: 00 00 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
+
+======= User data rate 14400
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
+dumping 36 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 1 1 0
+1 111 112 1 1 113 114 0
+1 1 1 115 116 117 118 0
+1 1 0 1 0 0 0 0
+1 119 120 121 122 123 124 0
+1 125 126 127 128 1 1 0
+1 129 130 1 1 131 132 0
+1 1 1 133 134 135 136 0
+dumping re-decoded V.110 frame:
+E-bits: 01 00 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136
+
+======= User data rate 19200
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137
138 139 140 141 142 143 144 145 146 147 148
+dumping 48 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 111 112 0
+1 113 114 115 116 117 118 0
+1 119 120 121 122 123 124 0
+1 0 1 1 0 0 0 0
+1 125 126 127 128 129 130 0
+1 131 132 133 134 135 136 0
+1 137 138 139 140 141 142 0
+1 143 144 145 146 147 148 0
+dumping re-decoded V.110 frame:
+E-bits: 00 01 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136 137 138 139 140 141 142 143 144 145 146 147 148
+
+======= User data rate 24000
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130
+dumping 30 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 1 1 0
+1 111 112 1 1 113 114 0
+1 1 1 115 1 1 1 0
+1 0 0 1 0 0 0 0
+1 116 117 118 119 120 121 0
+1 122 123 124 125 1 1 0
+1 126 127 1 1 128 129 0
+1 1 1 130 1 1 1 0
+dumping re-decoded V.110 frame:
+E-bits: 00 00 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
+
+======= User data rate 28800
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136
+dumping 36 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 1 1 0
+1 111 112 1 1 113 114 0
+1 1 1 115 116 117 118 0
+1 1 0 1 0 0 0 0
+1 119 120 121 122 123 124 0
+1 125 126 127 128 1 1 0
+1 129 130 1 1 131 132 0
+1 1 1 133 134 135 136 0
+dumping re-decoded V.110 frame:
+E-bits: 01 00 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136
+
+======= User data rate 38400
+user_bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137
138 139 140 141 142 143 144 145 146 147 148
+dumping 48 encoded bits in V.110 frame:
+0 0 0 0 0 0 0 0
+1 101 102 103 104 105 106 0
+1 107 108 109 110 111 112 0
+1 113 114 115 116 117 118 0
+1 119 120 121 122 123 124 0
+1 0 1 1 0 0 0 0
+1 125 126 127 128 129 130 0
+1 131 132 133 134 135 136 0
+1 137 138 139 140 141 142 0
+1 143 144 145 146 147 148 0
+dumping re-decoded V.110 frame:
+E-bits: 00 01 01 00 00 00 00
+S-bits: 00 00 00 00 00 00 00 00 00
+re-decoded user bits: 101 102 103 104 105 106 107 108 109 110 111 112 113 114
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
135 136 137 138 139 140 141 142 143 144 145 146 147 148
--
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