PRBT Air interface Canal This topic has 3 replies, 1 voice, and was last updated 16 years, 4 months ago by Bo. Viewing 4 posts - 1 through 4 (of 4 total) Author Posts 10th June 2008 at 08:36 #52697 ToofyGuest Any one knows what is the Air interface canal used to send personalised ring back tone (PRBT)? Is it TCH, SDCCH ? Or it depends for the mode used in MSC side? (OACSU, Early assignment or Very early Assignment) 11th June 2008 at 10:29 #52698 MKTGuest TCH 11th June 2008 at 11:42 #52699 ToofyGuest MKT, do you have any Document about this? 31st July 2008 at 20:46 #52700 BoGuest It’s actually a call to C-node, so the channel must be TCH Author Posts Viewing 4 posts - 1 through 4 (of 4 total) The forum ‘Telecom Design’ is closed to new topics and replies.