We use much PRI as backup of our leased lines.
When a link falls, the backup pri functions very well. The configuartion of our router is correct and
that never posed problem.
But we noted that when the PRI was used several times and thus started as backup of our lines, it arrives that the router where the pri line is
connected cannot even call the distant site as if there were a problem of allowance of the memory resources.
Did you already meet this type of problem? if so, which solution did you find?
The ios we use is C3640-JS-MZ_122-10A.BIN with 64 Mbytes of memory.