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Author SHA1 Message Date
Andreas Eversberg b32e0ab602 Implementation of RX level squelch (for A-Netz and B-Netz) 
Use -S <dB> for setting RF level or use -S auto for auto level.

When squelch closes, audio is muted. If squelch is closed for some
seconds (depending on network), call is released. (RF loss condition)

The previous loss detection has been removed
 2017-10-22 19:23:08 +02:00
Andreas Eversberg f7a0e4622b Display channel offset with TX and RX channel frequencies on startup 2017-10-22 19:23:06 +02:00
Andreas Eversberg e67c171035 SDR: Minor fixes in error condition handling 2017-10-22 19:23:05 +02:00
Andreas Eversberg f7476bce41 NMT-900: Handle channels >= 1025 correctly 2017-10-22 19:23:04 +02:00
Andreas Eversberg 3218d1a8e0 NMT: Fixed segfault when decoding certain (invalid) messages 2017-10-22 19:23:03 +02:00
Andreas Eversberg 975e34211b Call control: Minor logging fixes 2017-10-22 19:23:02 +02:00
Andreas Eversberg ae29f84ed7 Fixed typo 2017-10-12 19:46:32 +02:00
Andreas Eversberg 595fd845e0 NMT: Removed double implementation of caller ID encoding 2017-10-12 19:46:32 +02:00
Andreas Eversberg ba036de226 Add function to display measurements on screen 
Use 'm' key to toggle display.
 2017-10-12 19:46:30 +02:00
Andreas Eversberg e84d7a082c Use braces to make GCC happy 2017-10-02 12:34:38 +02:00
Andreas Eversberg c645ef9c14 R2000: Use correct debug category 2017-10-02 12:34:35 +02:00
Andreas Eversberg 1a4a08386c Only dial if call is on-hook or disconnected 2017-10-02 12:34:34 +02:00
Andreas Eversberg 3f2f0fdd8c C-Netz: Show standard deviation of bit levels instead of jitter 2017-10-02 12:34:33 +02:00
Andreas Eversberg 5ea48588e5 AMPS/TACS: Change audio level range 2017-10-02 12:34:31 +02:00
Andreas Eversberg 3e1da04f14 AMPS: Minor fixes to loopback test 2017-10-02 12:34:27 +02:00
Andreas Eversberg f469879ed0 SDR: Use filter to remove harmonics caused by downsampling/upsampling 
This drastically increases the signal-noise-ratio and removes co-channel
interferences. It gains CPU usage, but only on SDR threads, not on the
main thread.
 2017-09-24 15:59:24 +02:00
Andreas Eversberg ff5faa8697 SDR: Improved IQ plot display, increase dynamics of spectrum display 2017-09-24 15:57:56 +02:00
Andreas Eversberg c1fe179d5d AMPS: Fix 'use-after-free-bug' after destroying transaction 2017-09-24 14:11:54 +02:00
Andreas Eversberg b6468b585d NMT: Minor fixes on frame data 2017-09-22 16:51:47 +02:00
Andreas Eversberg 08dd180ea0 Add echo test feature to check mobile phone's mic + speaker 
Add '-e' to command line option, but do not select MNCC nor call device
 2017-09-21 20:29:30 +02:00
Andreas Eversberg 274cb7992b SDR: Improvement of spectrum view, peaks are drawn correctly 2017-09-16 10:48:48 +02:00
Andreas Eversberg 0b7b8f12c6 work on docs 2017-09-16 00:14:41 +02:00
Andreas Eversberg 3b7c515f6f add new libs.a to .gitignore 2017-09-11 20:42:06 +02:00
Andreas Eversberg 5b1956fe49 Move sms and dms code (NMT) to separate lib.a 2017-09-11 20:37:03 +02:00
Andreas Eversberg b6326aa473 Move commonly used German tones (A/B/C-Netz) to separate lib.a 2017-09-11 20:35:18 +02:00
Andreas Eversberg 7017fd7b3c Give hint to alter PKG_CONFIG_PATH, if SoapySDR or UHD was not found 2017-09-11 20:31:29 +02:00
Andreas Eversberg c6875ea412 work on docs 2017-09-03 19:13:36 +02:00
Andreas Eversberg d28a5df024 R2000: Minor fix in channel description 2017-09-03 19:13:21 +02:00
Andreas Eversberg 9205767f94 SDR: Display spectrum graph together with channel numbers and position 2017-09-02 15:41:11 +02:00
Andreas Eversberg 496aff5a79 Add implementation of analog TV signal generator (PAL so far) 
Quick and dirty Howto:
make && tv/osmotv --sdr-soapy --sdr-tx-gain 60  -r 15000000 -c 21 tx-fubk --sdr-tune-args "OFFSET=-3000000"
 2017-09-02 07:34:50 +02:00
Andreas Eversberg a52c89800c SDR: Split SDR config from main_mobile.c to sdr_config.c 2017-09-02 07:34:48 +02:00
Andreas Eversberg 94ed39f5e2 JTACS: Implementation of the Japanese variant of TACS 2017-09-01 18:42:54 +02:00
Andreas Eversberg 489ab9506c TACS: Fix power levels 2017-09-01 18:42:53 +02:00
Andreas Eversberg 05c516ca16 SDR: Fixed stack overflow by allocating memory instead of local buffers 2017-09-01 18:42:52 +02:00
Andreas Eversberg eb0c123433 C-Netz: Fixed overflow bug 2017-09-01 18:42:51 +02:00
Andreas Eversberg dfdad21e3f C-Netz: Work on system informations, metering and call queues 
- Make system informations configurable
- Simulate call mertering
- Support for call queues on busy voice channels
 2017-09-01 18:42:51 +02:00
Andreas Eversberg 3bfba37fff Corrected print messages in wave file processing. 2017-09-01 18:42:50 +02:00
Andreas Eversberg cff7622f5c Move mobile phone specific code from libcommon.a to libmobile.a 2017-09-01 18:42:49 +02:00
Andreas Eversberg 3c0bcce97b Move German tones from common code to individual implementation 2017-09-01 18:42:48 +02:00
Andreas Eversberg d2472cfca6 Emphasis: Add filter to prevent emphasis above 4000 Hz 
Remove obsolete filter from fsk.c.
 2017-09-01 18:42:47 +02:00
Andreas Eversberg 743d147d16 SDR: Turn TX power off if requested by network 
The power level is ramped smoothly within 1 ms up or down.

R2000, AMPS and C-Netz turn off power when voice channel is not i use.

C-Netz turns off power between OgK timeslots.
 2017-09-01 18:42:46 +02:00
Andreas Eversberg 1c2e9180a2 Radiocom 2000: Use high-pass filter to remove supervisory signal 2017-09-01 18:42:45 +02:00
Andreas Eversberg ae2b0cce0c B-Netz: Be more tollerant with quality of continuous tones 2017-09-01 18:42:44 +02:00
Andreas Eversberg 064d95f37e Fixup: SDR: Show IQ data with three colors 
Use correct threshold values to display colors
 2017-09-01 18:42:42 +02:00
Andreas Eversberg ea7cbb8675 SDR: Add option to enable TX timestamps on UHD devices (disabled by default) 2017-08-16 18:51:47 +02:00
Andreas Eversberg 8489914bf0 SDR: Add time consumption debug code 2017-08-16 18:51:46 +02:00
Andreas Eversberg 42a87c1c2f SDR: Name SDR TX and RX threads 2017-08-16 18:51:46 +02:00
Andreas Eversberg ee61c4362b B-Netz: Use standard deviation to determine if an FSK frame is valid or not 2017-08-16 18:51:45 +02:00
Andreas Eversberg 41bd9999b1 B-Netz: Add metering pulse support (Gebuehrenimpuls) 2017-08-16 18:51:44 +02:00
Andreas Eversberg 275be50225 R2000: Fixes 2017-08-16 18:51:43 +02:00
Andreas Eversberg 3afcac8342 SDR: Add option to swap RX and TX frequencies (for testing) 2017-08-10 17:42:54 +02:00
Andreas Eversberg f2d439c1ae UHD: Remove buggy sample rate check 2017-08-10 15:59:29 +02:00
Andreas Eversberg 29244bda38 work on docs 2017-08-10 15:58:58 +02:00
Andreas Eversberg 999b6a2b4d UHD: Make frequency settings more tollerant (+-100 Hz are accepted) 2017-08-09 17:27:14 +02:00
Andreas Eversberg 534411d660 New common FSK implementation, replaces all individual implementations 2017-08-09 17:27:13 +02:00
Andreas Eversberg ffd3b848e1 Implementation of "Radiocom 2000", the analog French mobile network 2017-08-09 17:27:12 +02:00
Andreas Eversberg 8ce3ff455d Add incoming answer to call control, also allow to send recall tone 2017-08-09 17:27:08 +02:00
Andreas Eversberg f5e4058c6f work on docs 2017-08-08 12:54:56 +02:00
Andreas Eversberg d20b41a457 Fixed command line option for call audio device (headset) 
--call-device option now works.

Thanx to Fabricio pointing to this bug.
 2017-08-08 12:54:45 +02:00
Andreas Eversberg 7c9ce960d7 Fixes of checking digits 2017-08-08 12:54:21 +02:00
Andreas Eversberg 5090f5a18d SDR: Show IQ data with three colors to detect input overdrive 
green: up to 0.45
yellow: between 0.45 and 0.9
red: above 0.9
 2017-08-08 12:54:03 +02:00
Andreas Eversberg 0cbd9657d2 Move Hagelbarger error correction code from NMT to common code 
It will be used by Radiocom 2000 also.
Some minor fixes and improvements apply.
 2017-08-08 12:53:48 +02:00
Andreas Eversberg 6c64025717 Move FFSK modem from NMT to common code, so it can be used by other networks 2017-08-08 12:53:34 +02:00
Andreas Eversberg 92ce6d4a42 SDR: Using threads for read and write when doing resampling 2017-08-08 12:53:02 +02:00
Andreas Eversberg 3274812eab NMT-900 System implementation 
NMT can now be run as 450 or 900 Network.
 2017-08-08 12:52:45 +02:00
Andreas Eversberg 0c9de251be NMT: Implement Hagelbarger Code 
This will correct burst errors of received messages. If the message
is too corrupted, it will be ignored, because some element may not
match then. The digits and line signals are checked for consistency,
since they are repeated serveral times in a message.
 2017-08-08 12:52:29 +02:00
Andreas Eversberg cd9cb9a107 Minor fix for NMT debug output 2017-07-15 12:45:20 +02:00
Andreas Eversberg a088536533 Minor fix for IQ data display 2017-07-15 12:45:20 +02:00
Andreas Eversberg fda224c27f Fixing and improving SDR support (SoapySDR and UHD) 
- Soapy SDR now works.
- Channels can be selected.
- Antennas can be listed and selected.
- Device args, tune args, stream args can be specified.
 2017-07-15 12:45:19 +02:00
Andreas Eversberg 538b4a42ec Add wave file playback to replace TX audio 2017-07-15 07:38:16 +02:00
Andreas Eversberg aa20d4e50e Cleanup common/Makefile.am 2017-07-15 07:38:15 +02:00
Andreas Eversberg 557d19de66 NMT: Show trafic areas in hex and allow to select unsupported areas 2017-07-15 07:38:14 +02:00
Andreas Eversberg 3774519631 NMT: Fixed "use after free" bug 2017-07-15 07:38:13 +02:00
Andreas Eversberg 7af886c600 NMT: Fixed NMT digit decoding 2017-07-15 07:38:13 +02:00
Andreas Eversberg 085ceb9173 Minor fixes to compandor 2017-07-15 07:38:12 +02:00
Andreas Eversberg a12329a884 Work on docs 2017-07-15 07:38:11 +02:00
Andreas Eversberg 3ce50f8ab3 AMPS: Fixes in message display and function names 2017-07-15 07:38:10 +02:00
Andreas Eversberg 3788b3e8a5 TACS support (variations added to AMPS code) 
These are:

- Bandwidth only 25 KHz, so lower deviations
- Data rate only 8000 KHz
- SID is called AID (Area ID)
- MIN1 coding is different
 2017-07-15 07:38:09 +02:00
Andreas Eversberg d52f4cd29d NMT: Mark Benelux and Czech/Slovak networks as tested 
I have tested the network with B/NL/L and CZ/SK phones, and they work!
 2017-06-15 18:28:26 +02:00
Andreas Eversberg 1aebedc66a NMT: Fixed line signal description 2017-06-11 09:01:21 +02:00
Andreas Eversberg 7a9762e28e NMT: Disable Supervisory signal during DMS (SMS) transfer and use Timeout 
There is no Supervisory signal during DMS transfer, so there must be
no timeout for Supervisory signal. Instead, the SMS layer will timeout
after some seconds without receiving data.
 2017-06-11 08:13:52 +02:00
Andreas Eversberg 3e86ef95c4 B-Netz: Minor printf fix 2017-06-10 17:49:59 +02:00
Andreas Eversberg 19afb792b5 NMT: Fix and adjustements to supervisory signal detection 2017-06-10 17:11:47 +02:00
Andreas Eversberg 50b2021d21 NMT 450: Support for other European counties, like Belgium, Czech, Slovakia 2017-06-10 13:08:51 +02:00
Andreas Eversberg dbdedfe1a1 AMPS: Fixed selecting right CRC values for FOCC words 2017-06-10 13:08:26 +02:00
Andreas Eversberg d23672354f Add option to set MNCC socket name (to run multiple base stations) 2017-06-10 13:08:26 +02:00
Andreas Eversberg 329463bb8c SDR: Add option to give channel number 
Using SoapySDR server allows to run different networks on multi channel
SDR devices.
 2017-06-10 13:08:25 +02:00
Andreas Eversberg aef4cf0997 Make spectrum display nicer by plotting continuous lines between samples 2017-06-10 13:08:24 +02:00
Andreas Eversberg e0534db15c Make spectrum display a little nicer by using '|' instead of ':' 2017-06-10 13:08:23 +02:00
Andreas Eversberg e653475ff7 NMT: Allow NULL (B'0000') to be used as country selector in traffic area 2017-06-10 13:08:23 +02:00
Andreas Eversberg 57d4d1739e AMPS/C-Netz: Correctly release pending transaction when creating a new one 
If transactions is created, look on all channels for pending transaction
with same subscriber.

1. Remove that transaction.

2. Make channel return to IDLE.

3. Release call, if callref exists.
 2017-06-10 13:08:22 +02:00
Andreas Eversberg 6adfcf7466 Status display 
Alows to show status of current channels and users
 2017-06-10 13:08:21 +02:00
Andreas Eversberg bb64c6b3ba AMPS: Add DTX support 
When DTX is enabled (-S dtx=2 or 3), a missing SAT tone causes the receiver
to mute audio and insert a low level of comfort noise.
Also the missing SAT tone will not cause the connection to be terminated.
 2017-06-10 13:08:19 +02:00
Andreas Eversberg 2c1ab89723 Notify about usage of channels that are next to each other 
It is required to have at least one free channel between channels, to
avoid interferences.
This is only a warning, it will not reject channels next to each other.
 2017-05-24 14:01:25 +02:00
Andreas Eversberg fc3b3e07be Finetuning LOSS (noise) detection 
The algorithm is still bad, but works in most cases
 2017-05-24 14:00:08 +02:00
Andreas Eversberg 56024b384b AMPS: Serveral minor fixes 2017-05-23 18:11:10 +02:00
Andreas Eversberg 76a3484c5c C-Netz: Make demodulation algorithm (slope or leve) slectable via option 
By default (auto), the algorithm is selected, depending on sound card
or SDR usage. For testing and debugging purpose, the algorithm can be
forced.
 2017-05-19 19:11:59 +02:00
Andreas Eversberg c086e66b7c minor cleanups 2017-05-17 20:14:37 +02:00
Andreas Eversberg 0557bbbc43 SDR: Checking given parameters with a tollerance of up to 0.001 
Rounding errors may cause given parameters to be changed a little.
When comparing the set-values with the get-value, a small amount
of tollerance must be allowed.

Thanx to Syvain, pointing to this bug!
 2017-05-17 20:06:47 +02:00
Andreas Eversberg 683078a7a0 SDR: Spectrum display will not scale FFT result 
Instead the greatest possible width that will fit into the window will
be used. This width is 2 to the power of N.
 2017-05-17 20:06:46 +02:00