Hi all ! I played around for a few hours with a polycom 500 phone and it seems me that the dtmf mode is not configurable, looks like it only has inband mode. While this is ok with G711 I assume that will result in some troubles using G729, altought I cant test it because I havent got any g729 licence yet. Anyone has tried and is willing to share his impressions ? TNX ! -- Best regards, Alessio mailto:afoc@interconnessioni.it
> I played around for a few hours with a polycom 500 phone and it seems me that the dtmf > mode is not configurable, looks like it only has inband mode.> While this is ok with G711 I assume that will result in some troubles > using G729, altought I cant test it because I havent got any g729 licence > yet.> Anyone has tried and is willing to share his impressions ?I don't (yet) have any Polycom phones, but I have been stuck in situations needing inband DTMF over G.729. If you press the keys for a relatively long time (100 ms or more) then perhaps 1% of the digits may get lost. IIRC, the '0' key is the worst. If your application is "for sales, press 1", then it's probably ok. If you need to key in 4-digit extension numbers, it will be annoying. If you need to input account numbers, passwords, etc., with complex menus, forget it. --Stewart
Alessio Focardi wrote:> Hi all ! > > I played around for a few hours with a polycom 500 phone and it seems me that the dtmf > mode is not configurable, looks like it only has inband mode. > > While this is ok with G711 I assume that will result in some troubles > using G729, altought I cant test it because I havent got any g729 licence > yet. > > Anyone has tried and is willing to share his impressions ?Polycom IP phones support RFC2833. I don't recall where in the config interface it's set. -------------- next part -------------- A non-text attachment was scrubbed... Name: eric.vcf Type: text/x-vcard Size: 146 bytes Desc: not available Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20041028/10b338ea/eric.vcf