LAPD SIGNALLING This topic has 5 replies, 1 voice, and was last updated 8 years, 5 months ago by Wallis Dudhnath. Viewing 6 posts - 1 through 6 (of 6 total) Author Posts 5th July 2007 at 14:22 #48070 mounirGuest hello evry body what is the most diferrence between SS7 and LAPD SIGNALLING 6th July 2007 at 14:39 #48071 MEGuest LAPD protocol is part of SS7 signalling . 9th July 2007 at 07:22 #48072 NarChaiGuest LAPD BSCBTS LAPDm BTSMS 31st January 2011 at 13:32 #48073 Khalid Shabbir YasirGuest SS7 signalling link Between MSC & BSC. LAPD are signalling liks between BSC & BTS. 16th October 2013 at 14:08 #48074 saraGuest can any one tell me signalling overlay of GSM and the type of signalling between all nodes of GSM 4th July 2015 at 19:40 #48075 Wallis DudhnathGuest SS7 – Signalling System Number 7 -is the overall sinalling that is used with GSM, etc.. Networks. It looks at MAP, ISUP, etc.. LAPD – Link Access Procedure on the D channel is from ISDN. It is used to signal requests to the BTS nodes. Author Posts Viewing 6 posts - 1 through 6 (of 6 total) The forum ‘Telecom Design’ is closed to new topics and replies.