There is such a for plugins that Mark suggests to use. Mark's right. That makes sense. That way if FS doesn't really have the codec, you can't trick it into thinking it does.
Nice that you can trick it, nice it (AA) has a fallback to catch itself. On Thu, May 6, 2010 at 1:30 PM, Fowler, Peter (Peter) <[email protected]>wrote: > In 4.2 Freeswitch will use its codec list to find a match instead of the > clients. Ie. FS will use the first codec in the FS codec list that the > client also > supports. Prior to 4.0.4 FS would use the first codec in the client's list > that FS also supports. > > This helps a bit but still doesn't address the issue that the FS codec list > is a free form field (administrator could put G.729 as the beginning of the > list). > > Peter > > ------------------------------ > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Tony Graziano > *Sent:* Thursday, May 06, 2010 1:25 PM > *To:* GERTSVOLF, MARK (MARK) > *Cc:* [email protected] > *Subject:* Re: [sipX-dev] Auto-attendant mystery > > but shouldn't FS fail and try the next codec since it doesn't actively > negotiate it? Since FS offered it, is there any "mechanism" in FS to say > "that didn't work well, so ..next codec... before failing over"? > > I think it's awesome the failover did exactly what is was supposed to do. > > On Thu, May 6, 2010 at 1:20 PM, GERTSVOLF, MARK (MARK) < > [email protected]> wrote: > >> Here is an interesting problem, which took me quite some time to explain. >> >> Customer complaining that calls to auto-attendant from a subset of phones >> are being forwarded to live operator without being presented with AA >> prompts. >> First I discover that live operator is specified as an AA failover >> destination. >> I then discover that all sets exhibiting this behavior have one thing in >> common - G.729 is ahead of G.711 in the codec list. >> Looking at the call trace it seems that Freeswitch receiving the call with >> G.729 followed by G.711 answers the call with G.729 and immediately >> transfers the call to the live operator. This is odd since Freeswitch in >> sipX does not have support for G.729. >> >> Now, "media services" service has configuration parameter called "Codecs", >> which is a free form text string set by default to: >> "p...@20i,p...@20i,speex,G722,L16". >> This parameter is accessible via Servers->Services screen. It turns out the >> customer, in his infinite wisdom, changed this parameter and added "G729" to >> the list... >> >> Presence of G.729 codec on the codecs list is causing FS to answer the >> call with G.729 for all calls that have G.729 as a preferred codec in the >> SDP offer. After answering the call FS determines that there is no valid >> input and transfer the call to failover destination. >> >> Even though technically this is a case of invalid configuration, it may >> save us time in the future if the media services "codecs" parameter is >> converted into a multi-selection list. Alternatively, we could use a new >> sipX 4.0 codec widget, which is used for codec selection for phones. >> >> Thanks, >> Mark. >> >> >> >> >> >> >> >> >> >> >> >> >> >> _______________________________________________ >> sipx-dev mailing list [email protected] >> List Archive: http://list.sipfoundry.org/archive/sipx-dev >> Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev >> sipXecs IP PBX -- http://www.sipfoundry.org/ >> > > > > -- > ====================== > Tony Graziano, Manager > Telephone: 434.984.8430 > sip: [email protected] > Fax: 434.984.8431 > > Email: [email protected] > > LAN/Telephony/Security and Control Systems Helpdesk: > Telephone: 434.984.8426 > sip: [email protected] > Fax: 434.984.8427 > > Helpdesk Contract Customers: > http://www.myitdepartment.net/gethelp/ > > Why do mathematicians always confuse Halloween and Christmas? > Because 31 Oct = 25 Dec. > > -- ====================== Tony Graziano, Manager Telephone: 434.984.8430 sip: [email protected] Fax: 434.984.8431 Email: [email protected] LAN/Telephony/Security and Control Systems Helpdesk: Telephone: 434.984.8426 sip: [email protected] Fax: 434.984.8427 Helpdesk Contract Customers: http://www.myitdepartment.net/gethelp/ Why do mathematicians always confuse Halloween and Christmas? Because 31 Oct = 25 Dec.
<<attachment: codec-order.png>>
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