R: [Asterisk-Users] Several patches, including recording and music-on-hold

[Matteo Brancaleoni]

Very nice work.
I wonder if mark will include that into the main
cvs tree. There're many patches till now that're 
interesting (like that, or pauline i4l patches),
but the risk is to have a lot of confusion.

Mark, will you merge that ;-) ?

(i'm thinking to put up a little website,
with a repository of all * patches. tell me
if anyone is interested into that)

Matteo Brancaleoni
mbrancaleoni at espia.it
Emmegi System Administrator
 
EspiA - EMMEGI Srl - e*solution provider
Uffici: Via Pascoli, 37
20129 Milano - Italy
Sede Legale: Corso Sempione 67
20149 Milano - Italy
Tel. +39 0270633354
Fax. +39 0245487890
http://www.espia.it

> -----Messaggio originale-----
> Da: asterisk-users-admin at lists.digium.com 
> [mailto:asterisk-users-admin at lists.digium.com] Per conto di 
> Fettahlioglu, Mahmut
> Inviato: mercoledì 12 marzo 2003 4.01
> A: 'asterisk-users at lists.digium.com'
> Cc: 'markster at digium.com'; 'asterisk-dev at lists.digium.com'
> Oggetto: [Asterisk-Users] Several patches, including 
> recording and music-on-hold
> 
> 
> Hello everyone,
> 
> I was working on implementing several changes to asterisk. I 
> had described the changes and their reasons in several emails 
> before I started the job. I have completed the modifications 
> some weeks ago; the system was then tested extensively and is 
> now in use in a production environment. It seems fairly stable so far.
> 
> I believe at least some of the additions can be of general 
> use and would like to submit a patch. The modifications done are:
> 
> - Call recording. Any channel can be recorded through calling 
> applications on the dial plan, or sending messages through 
> the manager interface. A monitoring resource is created for 
> this functionality. I used Kostya V. Ivanov's call recording 
> patch to get the idea how. Thanks for this Kostya!
> - An alaw pcm format file driver. I had to record 
> conversations in alaw format. This is based on the ulaw 
> format driver. However, I had to make file writing real-time 
> for call recording to function correctly when channels use 
> silence suppression. To do this, basically the file driver 
> keeps the time recording started, and when new data is to be 
> written to the file, it is written to the correct file 
> position. I have seen that a seek function was added to file 
> drivers after I have done those changes, and I think we might 
> want to change the way file seeking is done currently. 
> However, initially adding the file as is will be the easiest.
> - Additional information is sent through the manager 
> interface for queue events.
> - Some bug fixes in chan_agent channel driver (mostly to do 
> with race conditions).
> - Modification to chan_sip so the default callerid used when 
> sending INVITEs is not hardcoded to "asterisk", but is read 
> from the config file. It defaults to "asterisk".
> - Modifications to manager to make the tcp connection 
> TCP_NODELAY. I have found we sometimes have delays in tcp 
> message transmit due to the Naple algorithm used in TCP. For 
> this fix to work, both the client (astman,
> gastman) and the server (asterisk) needs to be in TCP_NODELAY mode.
> - Asterisk exits if it cannot create a thread. I have 
> observed that once thread creation starts to fail, Asterisk 
> never recovers. So the changes cause asterisk to stop once it 
> detects that. The starter script can then restart asterisk. 
> This behaviour can be disabled by sending -DEXPERIMENTAL to 
> the compiler in the makefile.
> - Changed how music on hold resource works so that it does 
> not need a zaptel driver for timing any more. Sound quality 
> is good and not choppy without any zaptel driver.
> 
> I believe this should be about all. The patchfile is 
> attached. Any comments are welcome.
> 
> Regards,
> 
> Mahmut
>  
> --------------------------------------------------------------
> --------------
> ---------------------
> Mahmut Fettahlioglu
> Software Architect
> 
> Open Access Pty Ltd
> PO Box 301
> Crows Nest NSW 1585
>  
> Phone		02 9978 7009
> Fax		02 9978 7099
> Email		<mahmut.fettahlioglu at oa.com.au>
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