We used CTI ports starting with a 9 and we
put the CTI ports and route points
in a separate partition so they are not in the same partition as what the customer would dial out to the PSTN,
so that there would not be a conflict with 9.X route patterns. This works.
Is there any standard practice on what ranges
CTI ports should be in? I keep seeing in 4 digit
dial plan the least used is 9XXX.
and if Cisco recommends avoiding
certain DN ranges like 9XXX
for UCCX CTI ports