Verizon has done everything properly with codec negotiation. The wireshark captures show me what I was hoping for.
On 1/6/2010 8:21 PM, Tony Graziano wrote: > Glad you have that worked out. When an invite goes out, it offers codec > choices, and typically the first agreed match is what will be used. Lesser > ITSP's WILL fail a call with G722 as the first codec offered, some will look > for another codec. In my experience the one that fails that negotiation is > where I start running away from them as a provider. I've said it many times, > not all ITSP's are equal. > > ============================ > Tony Graziano, Manager > Telephone: 434.984.8430 > Fax: 434.984.8431 > > Email: tgrazi...@myitdepartment.net > > LAN/Telephony/Security and Control Systems Helpdesk: > Telephone: 434.984.8426 > Fax: 434.984.8427 > > Helpdesk Contract Customers: > http://www.myitdepartment.net/gethelp/ > > ----- Original Message ----- > From: sipx-users-boun...@list.sipfoundry.org > <sipx-users-boun...@list.sipfoundry.org> > To: Todd Hodgen<thod...@verizon.net>; sipx-users@list.sipfoundry.org > <sipx-users@list.sipfoundry.org> > Sent: Tue Jan 05 23:38:23 2010 > Subject: Re: [sipx-users] No G.711 = no Polycom HD voice? > > I love these one sided conversations. I really should search a little > more before I send the email.... > http://sipx-wiki.calivia.com/index.php/Polycom_SoundPoint_IP_family_table > At least the answer is in the archives again if anyone searches :) > > On 1/5/2010 10:34 PM, mkitchin.pub...@gmail.com wrote: > >> Perhaps I completely misunderstood the Polycom codec configuration page. >> I just read this: >> http://track.sipfoundry.org/browse/XX-6785 >> So the 450 uses the "IP_650" codec group. I didn't realize that. I >> just assumed the numbers on this page corresponded to the model of the >> phone. This could be a no brainer for me to fix now. What codec group >> does the 550 fall under? Is this a Polycom naming convention? Is there >> somewhere I can look up what model corresponds to what codec group? >> Pardon my ignorance here. I'm guessing the 550 falls under the 650 >> codec group as well since that model does support G722. Thank you! You >> guys rock! >> >> On 1/5/2010 9:50 PM, mkitchin.pub...@gmail.com wrote: >> >>> I don't see G722 as an option for the most part. I only see that for >>> the 650. I'm using 450s and 550s. Am I missing something? >>> >>> On 1/5/2010 9:44 PM, Todd Hodgen wrote: >>> >>>> Why not have the G722 as first option, G729 as second option, and >>>> then G711 >>>> as third option. This should put internal G722 to G722 compliant >>>> phones >>>> working on that CODEC. Then, when they leave the system to systems >>>> that >>>> don't support G722, they will go to G729 next. The devices will do >>>> their >>>> own end to end negotiations to find the right CODEC to work with. >>>> >>>> Eventually, the ITSP's will get to a point where they support G722. >>>> Once >>>> they find they are losing market share, they will be the first in >>>> their own >>>> minds. >>>> >>>> -----Original Message----- >>>> From: sipx-users-boun...@list.sipfoundry.org >>>> [mailto:sipx-users-boun...@list.sipfoundry.org] On Behalf Of >>>> mkitchin.pub...@gmail.com >>>> Sent: Tuesday, January 05, 2010 7:05 PM >>>> To: sipx-users@list.sipfoundry.org >>>> Subject: [sipx-users] No G.711 = no Polycom HD voice? >>>> >>>> As I was testing our setup with Verizon VOIP, they pointed out that we >>>> were using G.711. I had left our Polycom 450s and 550s with the default >>>> codec settings. Verizon stated all of their customers use G.729 for >>>> general voice use. Their servers do immediately renegotiate to G.711 >>>> when they detect something like touch tone menus. So, at the handset >>>> level I bumped 'G729AB' to preference 1 and moved everything else >>>> down 1 >>>> position. It is my understanding that is the only way to control the >>>> codec used for external calls. This seems to have killed (if it did, I >>>> certainly understand why) the 'HD Voice' crystal clear calls we had >>>> from >>>> internal handset to handset. The little HD symbol doesn't show up on >>>> the >>>> phone anymore either. Is this expected? I was told in a previous >>>> discussion there is no way to have sipx control what codecs are >>>> used. Is >>>> there any way at all to keep the HD Voice quality calls for internal >>>> use >>>> on our LAN but then still default to G.711 for calls to the outside >>>> world? I have a single sipx server that has all components running >>>> on it. >>>> >>>> Thanks as always. Hopefully one day someone will ask the same questions >>>> I do and I can return the favor for all the help you guys have given. >>>> -Matthew >>>> >>>> _______________________________________________ >>>> sipx-users mailing list sipx-users@list.sipfoundry.org >>>> List Archive: http://list.sipfoundry.org/archive/sipx-users >>>> Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users >>>> sipXecs IP PBX -- http://www.sipfoundry.org/ >>>> >>>> >>> >> > _______________________________________________ > sipx-users mailing list sipx-users@list.sipfoundry.org > List Archive: http://list.sipfoundry.org/archive/sipx-users > Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users > sipXecs IP PBX -- http://www.sipfoundry.org/ > _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users sipXecs IP PBX -- http://www.sipfoundry.org/
