voip on credit card system This topic has 1 reply, 1 voice, and was last updated 20 years, 2 months ago by Omer. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 12th October 2004 at 05:17 #28241 tarcleeGuest can i know how the credit card transaction work in the shops?can the credit card machine using voip? 15th October 2004 at 13:18 #28242 OmerGuest The credit card machine is a POS terminal. You need a GW which can understand Modem Indication. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Voice over IP’ is closed to new topics and replies.