PDD This topic has 1 reply, 1 voice, and was last updated 15 years, 9 months ago by MikeM to Selva. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 9th February 2009 at 10:01 #31875 selvaGuest can you please tell me the expansion for PDD? 13th February 2009 at 14:33 #31876 MikeM to SelvaGuest Selva, I am hoping you meant to explain to you PDD. PDD stands for Post Dial Delay. This is the amount of silence that a caller hears after dialing the last digit up till he hears the first ring. MikeM mike_voip@hotmail.com Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Voice over IP’ is closed to new topics and replies.