Hello, did try to upgrade to wanpipe 3.5.12 (from 3.5.11) and thought the DTMF problem seems to be fixed (did not had the opportunity to really test it thourougthly), I seem to have lost the CID feature in the upgrade. Roll back to 3.5.11 and CID is back there. François On Mon, 28 Jun 2010 18:54:19 -0400, Moises Silva wrote: Hello, I spent a few hours playing with DTMF stuff and analog cards and it seems there is 2 issues at hand. 1. Bleeding DTMF. 2. Echo DTMF. The first issue, for software DTMF, can be solved with Anthony's pre buffer size feature. However that introduces delay by design, and it will not work for large DTMFs (if the dtmf is larger than the buffer). For hardware DTMF a new driver was just released that includes a configuration to allow the EC chip to perform the dtmf tone removal which cuts down the bleeding to only 20ms (in my testing) there is no way a DTMF detector will consider that a valid DTMF and therefore the bleeding should be solved with no delay introduced. The option is HWEC_DTMF_REMOVAL = YES, must be added along with the usual TDMV_HW_DTMF = YES in wanpipex.conf Ideally the software DTMF detector (in this case teletone) should cut it at the same time that it detects it. I thought may be spandsp would help, but it seems spandsp does not have an option to squelch the dtmf tone. May be Steve can help with that. I pinged him on IRC and he said he may get some code working, but there is no date for that and also that would involve integrating spandsp into FreeTDM, any reason to not do this now that spandsp is LGPL? As for the echo dtmf. It seems sometimes an outgoing DTMF may be detected as incoming DTMF due to echo. There is not much we can do there if you don't have echo cancellation. If however you have this issue even with HW EC, call Sangoma tech support and we will be happy to look at the issue. In another note, I added a variable and application to disable DTMF. That will disable DTMF (either software or hardware) in the leg executing that app. If you want to disable in the outgoing leg (before a bridge), you must export a special variable: The DTMF is enabled automatically on each call, so there is no need to enable it for each call. But in case you need to enable it: Moises Silva Senior Software Engineer Sangoma Technologies Inc. | 50 McIntosh Drive, Suite 120, Markham ON L3R 9T3 Canada t. 1 905 474 1990 x 128 | e. moy@sangoma.com [1] On Wed, Jun 16, 2010 at 12:09 PM, Anthony Minessale wrote: openzap_pre_buffer_size is a variable you can set to specific number of MS 60 for example. it will pre_buffer the audio on the channel so when you detect dtmf it will completely drop the buffer so all of the original dtmf should be dropped as well. probably if the dtmf is too long then it will cause problems anyway. if that pre buffer does not fix anything it would point to echo or bleeding. We could make a variable to disable dtmf detection completely on a per-call basis possibly but you will still probably hear it bleeding. This type of problem was reported fixed with sangoma because of the echo canceler. I don't use dahdi or digium stuff much so I can't comment on what happens when you use it. On Wed, Jun 16, 2010 at 3:41 AM, François Legal wrote: Does this really fix it ? I wonder because the problem I see here is also that the FXS side detects the DTMF and then queues it on the FXO side for generation. That leads to the called party receiving twice the DTMF, the first one is the inband DTMF, the second is the one queued/generated by the FXO channel. For a clean fix, I guess some kind of application should be created, that would prevent DTMF to be queued on the other channel. Such application would then be called before the bridge. Maybe there is a cleaner way to do this. François On Tue, 15 Jun 2010 18:23:13 -0500, "Jeroen C. van Gelderen" wrote:
Hi everybody,
I have a problem that is very similar to a problem reported by François [1] except for the fact that
my FXS and FXO ports are on a Xorcom Astribank device instead of a Sangoma.
To quote François: "The problem is that each leg of the bridge is detecting the inband DTMF, and so [F]reeswitch sends each detected DTMF from one leg to the other, and so on and so forth (as each leg detects the DTMF again and again)"
HIS words but evidenced by the MY log :)
The snippet below has DTMF coming in on the FXS port
(1:1) and bouncing between it and the FXO port (3:1).
The ports are simply bridged together with
"bridge(OpenZap/3/1/F)" or "bridge(OpenZap/3/1/w)"
I'm running:
FreeSWITCH version: 1.0.head (git-01c0c69 2010-06-08 16-22-21 -0500) dahdi: Version: SVN-trunk-r8762
Output of lsdahdi at end of message.
----8 2010-06-13 04:18:39.439252 [DEBUG] zap_io.c:2062 1:1 GENERATE DTMF [4]
2010-06-13 04:18:39.637249 [DEBUG] mod_openzap.c:721 queue DTMF [4]
2010-06-13 04:18:39.676248 [DEBUG] zap_io.c:2062 3:1 GENERATE DTMF [4]
2010-06-13 04:18:39.859244 [DEBUG] mod_openzap.c:780 Dropping frame! (write
not ready) [...ad infinitum...] ----8 ----8 channel_read_frame(switch_core_session_t *session, switch for (p = dtmf; p & p++) { if (is_dtmf(*p)) { _dtmf.digit = *p; - zap_log(ZAP_LOG_DEBUG, "queue DTMF [%c]n", *p); - switch_channel_queue_dtmf(channel,
+ if (tech_pvt->zchan->span_id == 3 || tech_pvt->zchan->span_id == 4) { + zap_log(ZAP_LOG_DEBUG, "Ignoring DTMF [%c] on FXO port %d:%dn", *p, tech_pvt->zchan->span_id,
tech_pvt->zchan->chan_id) ; + } else { + zap_log(ZAP_LOG_DEBUG, "queue DTMF [%c]n", *p); + switch_channel_queue_dtmf(channel,
+ } } } } ----8 Any and all pointers appreciated.
Cheers,
-Slim
[1] [Freeswitch-dev] FXS bridged on FXO ports and DTMF
http://www.mail-archive.com/freeswitch-dev@lists.freeswitch.org/msg02830.htm [5]
l
[Freeswitch-dev] Problem with sending DTMF on FXS port bridged to an FXO port
http://lists.freeswitch.org/pipermail/freeswitch-dev/2010-April/003607.html [6]
----8 5 FXS FXOKS 6 FXS FXOKS 7 FXS FXOKS 8 FXS
FXOKS
9 Output FXOKS 10 Output FXOKS 11 Input FXOKS 12 Input FXOKS 13 Input FXOKS 14 Input FXOKS ### Span 2: XBUS-00/XPD-10 "Xorcom XPD #00/10: FXS" 15 FXS FXOKS 16 FXS FXOKS 17 FXS FXOKS
18 FXS FXOKS
19 FXS FXOKS 20 FXS FXOKS 21 FXS FXOKS 22 FXS FXOKS ### Span 3: XBUS-00/XPD-20 "Xorcom XPD #00/20: FXO" 23 FXO FXSKS RED 24 FXO FXSKS RED 25 FXO FXSKS RED 26 FXO FXSKS RED 27 FXO FXSKS RED 28 FXO FXSKS RED 29 FXO FXSKS RED 30 FXO FXSKS RED
### Span 4: XBUS-00/XPD-30 "Xorcom XPD #00/30: FXO" 31 FXO FXSKS RED
32 FXO FXSKS RED 33 FXO FXSKS RED 34 FXO FXSKS RED 35 FXO FXSKS RED 36 FXO FXSKS RED 37 FXO FXSKS RED 38 FXO FXSKS RED ----8 Olympic Sports Data Services Email: jeroeng@thegreek.com [7] Phone: +1 876 953 6182 x128
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