=20 Dear Madhusudhan, Ringback is a signal quality degradation which can cause timing failures. For a listing of definitions please refer to my previous post, "Vocabulary of Signal Integrity Degradations" Dated Jan 3, 1999. Three approaches for minimizing (or eliminating) rignback include: 1. Incorporate Termination. 2. Optimize the Topology. 3. Alter the driver (receiver) ICs Technology. You can investigate the effectiveness of each of above techniques (for your particular case) via simulations, especially in the Fast corner. Best Regards, Abe Riazi ServerWorks -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Madhusudhan Kulkarni Sent: Sunday, May 21, 2006 11:32 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Ring back Hi, How to solve ringback problem and what is the disadvantages of ringback ------------------------------------------------------------------ =20 ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu