[asterisk-users] Dropped Calls

[Brent Davidson]

On 3/31/2010 10:38 AM, Michael L. Young wrote:
>
> Is there a chance that you are using Realtime at all?
>
> I am just curious because I was having problems with dropped calls as well
> and just discovered that it appears to be related to the database server.
> If for some reason on the database server there is a table lock (which I am
> investigating why) asterisk drops any PRI calls and SIP calls.  Everything
> looked normal and the error messages never once suggest a problem with the
> database server or Realtime.  I was looking everywhere else but at the
> Realtime until I stumbled across it.  While doing some backups with FLUSH
> READ LOCKS to a slave machine, which I changed asterisk to use a few months
> back, I had dropped calls occur.  I later confirmed that asterisk seems to
> hang / freeze during that period but once the database server releases the
> locks, asterisk continues to function without any problems.
>
> This started to occur when we had an increase in call volume and an increase
> in load on the db server.  I was using Realtime for extensions, sip peers
> and CDR.  I had turned off using realtime for CDR (which we don't really use
> anyway) and started to use a slave server instead of the master when
> performing some maintenance on the master db server.  I left it that way
> since I was just using it for extensions and sip peers and that had cleared
> it up over the last few months until I ran my backup.
>
> Not sure that helps but it is worth a shot in mentioning to you.
>
> Regards,
> Michael Young
> (elguero)
>    
In my case, no.  All extensions are hard-coded.  We only have a handful 
of phones that don't change.