CISS This topic has 0 replies, 1 voice, and was last updated 19 years, 4 months ago by Sivakumar. Viewing 1 post (of 1 total) Author Posts 13th October 2005 at 07:49 #42628 SivakumarGuest Hi All, Could you pls met me know what are all the supplementary services that come under CISS(Call independant supplementary services). I know SMS MO/MT, is for the CISS. Is there any other services that comes under CISS. Thanks, Sivakumar Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.