Hello expert: Due to the total number of backplane connections, I want to transfer E1/T1 diff-signal to sigle end signal in daughtercard, And transfer single end signal through B/plane, then recover it to diff-signal on main board. I know E1/T1 is analog signal and sigle end signal is more sensitive to noise and xtalk. Do you think the scheme is Reasonable, and how can I estimate risk. Thank you. BR//zaiyi Liao ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu