On Monday 19 September 2005 12:38, Rich Adamson wrote:> The g(6) adds a 6 db gain for zap calls that end up recording a Voicemail > message....> * 'g(#)' the specified amount of gain will be requested during message > recording (units are whole-number decibels (dB))How in the hell does that make any sense? are your normal incoming calls quiet too or just voicemail?> In my case, the asterisk box is located about 7db from the central > office. As noted in bug 2023 (and 2022), calls from an outside pstn > line coming into asterisk incure a 7db pstn loss (which can't be adjusted > for with rxgain and txgain as changing those values to something > reasonable generates echo). Retrieving that VM message from an outside > location creates another 7db loss (now -14db down in total), making it > very difficult (if not impossible) to hear the message. (And, yes I've > gone through all the recommendations with wav vs gsm files, etc.)I am not sure I understand why the txgain/rxgain isn't fixing it without adding unacceptable echo... this all seems very odd... I mean for a test you should be able to dial an echo() application and have extremely quiet echoed audio... is this the case?> The work around "only" kicks in if the call comes from a zap channel > and ends up in voicemail, adding a 6db gain to that recorded message. > No other channel types are impacted by this new parameter.This is a HELL of a band-aid. -A.
For those that have experienced low VM recording volumes when using
a Digium TDM04b (or similar analog pstn card), a work around has been
committed to cvs-head. Need some folks to test it; it doesn't seem
to work for me, but need some feedback from others to ensure the
work around is actually functioning. (The work around relates back
to bug #2023, and was committed around Thursday or Friday last week.)
The work around involves adding g(6) to an exten definition like this:
exten => 3000,1,Dial(SIP/3000,15,r)
exten => 3000,2,Voicemail(3000|ug(6))
exten => 3000,102,Voicemail(3000|bg(6))
exten => 3000,103,Hangup
The g(6) adds a 6 db gain for zap calls that end up recording a Voicemail
message.
"show application voicemail" indicates:
[Synopsis]
Leave a voicemail message
[Description]
VoiceMail(mailbox[@context][&mailbox[@context]][...][|options]):
Leavesvoicem
ail for a given mailbox (must be configured in voicemail.conf).
If the options contain:
* 's' instructions for leaving the message will be skipped.
* 'u' the "unavailable" greeting will be played.
* 'b' the "busy" greeting will be played.
* 'g(#)' the specified amount of gain will be requested during message
recording (units are whole-number decibels (dB))
In my case, the asterisk box is located about 7db from the central
office. As noted in bug 2023 (and 2022), calls from an outside pstn
line coming into asterisk incure a 7db pstn loss (which can't be adjusted
for with rxgain and txgain as changing those values to something
reasonable generates echo). Retrieving that VM message from an outside
location creates another 7db loss (now -14db down in total), making it
very difficult (if not impossible) to hear the message. (And, yes I've
gone through all the recommendations with wav vs gsm files, etc.)
The work around "only" kicks in if the call comes from a zap channel
and ends up in voicemail, adding a 6db gain to that recorded message.
No other channel types are impacted by this new parameter.
Could others that have this same issue give the above a try to see
if it impacts your VM recordings? (Kevin tested it on his development
workstation and it seemed to work, but he's at VON right now and
can't do much testing. Both of us are looking for a little help with
the testing effort.)
Post results to the -user list please.
Rich
On Mon, 2005-09-19 at 10:38 -0600, Rich Adamson wrote:> For those that have experienced low VM recording volumes when using > a Digium TDM04b (or similar analog pstn card), a work around has been > committed to cvs-head.Does this mean that tracking down the cause of the low volume issue was not successful or was the workaround an easier solution? Regards, Patrick
> On Mon, 2005-09-19 at 10:38 -0600, Rich Adamson wrote: > > For those that have experienced low VM recording volumes when using > > a Digium TDM04b (or similar analog pstn card), a work around has been > > committed to cvs-head. > > Does this mean that tracking down the cause of the low volume issue was > not successful or was the workaround an easier solution?It means this is a short-term work around while there is an ongong effort to identify the root cause (along with other possible TDM issues).
Oops, I didn't cc the list. Julian suggested I should try the older version of app_chanisavail.c and that worked out well. I can now use the g(#) switch and that works very well. On 9/24/05, Brian McEntire <brian.mcentire@gmail.com> wrote:> > That fixes it! Thanks. > > So I can run CVS HEAD but I need to check out -r 1.17asterisk/apps/app_chanisavail.c to revert just that file to the old version. > > I guess it could still be a prob with the new app_chanisavail.c but it > also looks like whatever provides ast_goto_if_exists could be at fault. > > > - - - > > To Rich: > > The new gain g(#) switch works great! I have to bump mine up to g(12) > which seems rediculously high, but then again I'm going out voip and back in > PSTN and perhaps the VOIP is quieting the signal too. > > Anway, with g(12), voicemail messages are recorded at a very acceptable > volume and sound good too. Thanks! >-------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20050924/f0242205/attachment.htm