[Asterisk-Users] Does * machine need a sound board for MOH? (add to FAQ)

Rich Adamson radamson at routers.com
Sun Sep 14 11:18:02 MST 2003 

Music on hold problem solved... needs to be in an FAQ somewhere!!!

After spending many hours trying to diagnose the MOH problem, it turned
out to be the mpg123 code from the RedHat site. My * machine is RH9 with
no mpg123 (or mpg321) installed by default. Searching the RedHat site
found the rpm needed, however RedHat has substituted an incompatible 
version without any notations of having done that. (The code that gets
installed is mgp321 with links that make it look like mpg123.)

The corrective action involved removing all occurances of mpg123 and
mpg321 from the linux box (including sym links), and installing the 
correct software from:
 www.mpg123.de/mpg123/precompiled/mpg123-0.59q-1.i386.rpm
then, "cp /usr/local/bin/mpg123  /usr/bin/mpg123"
and MOH worked fine.

As a side note for those that might have the same problem and searched 
the archives, other people have had this same problem, however finding
the steps necesary to correct this was not easy.

The symptom of this problem is... when placing a call on hold and expecting
music on hold, rather then hearing music one hears a low-level rumbling
sound. The CLI interface would show:
 Started music on hold, class 'default', on Zap/1-1
but one would only hear this rumbling sound.

Music on hold also relies on routines that are installed when certain Digium
hardware cards are installed (such as the X100P). If one of their cards are
not installed, then the user must uncomment the "# ztdummy" line (around
line 90) in the Makefile located in the zaptel source directory, do a
"make clean" followed by a "make install" to obtain the needed routines.
If that is successful, then "/sbin/lsmod" will display a list of modules
that are running when * is active which must include the ztdummy entry. If
that entry is not shown, then execute "/sbin/insmod ztdummy".

There was also assumptions made by several people that suggested an entry
in the extensions.conf file was needed, like:
  exten => 3000,2,MusicOnHold(default)
 or
  exten => 3000,2,SetMusicOnHold,default
 or
  exten => 3000,2,mp3player(/var/lib/asterisk/mohmp3/sample-hold.mp3)

These statments are NOT required at all. Apparently, they do provide
a way to specify a certain music directory and/or file on a "per extension"
basis, but they are optional and not required.

The only configuration statement that was needed to make MOH work for
extensions was one in the musiconhold.conf file like:
  default => mp3:/var/lib/asterisk/mohmp3 

With the above statement active, ALL extensions are provided music on hold
without further configuration statements.

Hope this helps others with the same problem.

Rich
------------------------
> On Sat, 13 Sep 2003, Rich Adamson wrote:
> 
> > Thanks John, but the question is not regarding the server. MOH is 'not'
> > working with the C7960's. If you wouldn't mind, read through the remainder
> > of the stuff below. Everything seems to suggest it should be working, but
> > the question was oriented around the error message "sound device: Resource 
> > temporarily unavailable" (which obviously pertains to the server, and I
> > don't care about the server).  Would the server's sound device issue be
> > impacting the inability of the C7960's to hear MOH?
> > 
> > Rich
> > -------------------------------
> > 
> > > Nope, you only need a sound board if you want to hear
> > > things on the * server
> > ------------------------------- 
> > > On Sat, Sep 13, 2003 at 05:05:32PM -0600, Rich Adamson wrote:
> > > > 
> > > > Does anyone know whether the linux machine running * have to have a 
> > > > sound card on it in order for musiconhold to work for sip phones?
> > > > 
> > > > I've tried about everything (including tons of google searching) to get
> > > > it to work, and nothing.
> > > > 
> > > > When a call is placed on hold between two C7960's, the CLI indicates:
> > > >     -- Executing Dial("SIP/3002-c418", "SIP/3000|20") in new stack
> > > >     -- Called 3000
> > > >     -- SIP/3000-56a0 is ringing
> > > >     -- SIP/3000-56a0 answered SIP/3002-c418
> > > >     -- Attempting native bridge of SIP/3002-c418 and SIP/3000-56a0
> > > >     -- Started music on hold, class 'default', on SIP/3002-c418
> > > >     -- Stopped music on hold on SIP/3002-c418
> > > >   == Spawn extension (from-sip, 3000, 1) exited non-zero on 'SIP/3002-c418'
> > > > 
> > > > If I do a "ps ax" to see what's running, I see:
> > > >  16243 pts/1    S      0:00 /usr/bin/mpg123 -q -s --mono -r 8000 -b 2048 For-You.
> > > > 
> > > > If I go to the * console and listen to "For-You", it plays through the speakers
> > > > just fine.
> > > > 
> > > > However, after starting * with -vvvvvc, I see:
> > > > 
> > > >  [chan_oss.so] => (OSS Console Channel Driver)
> > > > WARNING[1074504864]: File chan_oss.c, Line 974 (load_module): XXX I don't work r
> > > > ight with non-full duplex sound cards XXX
> > > >   == Registered channel type 'Console' (OSS Console Channel Driver)
> > > >   == Parsing '/etc/asterisk/oss.conf': Found
> > > > WARNING[1142127920]: File chan_oss.c, Line 232 (sound_thread): Read error on sou
> > > > nd device: Resource temporarily unavailable
> > > > <snip>
> > > >  [app_mp3.so] => (Silly MP3 Application)
> > > >   == Registered application 'MP3Player'
> > > > <snip>
> > > > 
> > > > 
> > > > I can't seem to find any other reason for MOH to not work. If someone has
> > > > MOH working, would it be possible for you to send me a "sip debug" listing
> > > > of what's going on so I can compare it to mine? (offlist to radamson at routers.com)
> > > > 
> > > > If anyone can think of anything more I can try it would be greatly appreciated.
> > > > 
> > > > This system does have two X100P cards, everything else is working fine, its
> > > > just the MOH that won't work.
> > > > 
> > > > Thanks
> > > > Rich
> > > > 
> > > > 
> > > > 
> > > > _______________________________________________
> > > > Asterisk-Users mailing list
> > > > Asterisk-Users at lists.digium.com
> > > > http://lists.digium.com/mailman/listinfo/asterisk-users
> > > _______________________________________________
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> > > http://lists.digium.com/mailman/listinfo/asterisk-users
> > 
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> > 
> > 
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