I am having some issues with dtmf beeping while in conversation. This is a simple home setup using asterisk 1.4.21 and a grandsteam 286 ATA with a cordless phone. I have played with the relaxdtmf setting in sip.conf. Setting it to yes made it worse which makes me think that the issue is coming from asterisk and not the ata. And all the dtmf modes are rfc. Any one have any tips to further trouble shoot this? Sam