I know that FXo analog ports may some time not detect properly busy signals or hang-ups, so thay may remain open (hang).
Is there a chance that the same may happen with E1 RBS channels or PRI? I didn’t think so as this signalling is digital but I read some postings on mailing lists talking about “stuck” channels on T1/E1’s.
Is there a chance that these phenomena took place because some applications require digital channels to be split to analog via channel banks? (Where digital trunks are not available for example).