A translation pattern can be set in routing mode or in blocking mode.
Let’s try both combinations. Once expanding the pattern 9999 to a PSTN number, and once blocking it.
configuring a routing translation pattern
We configure a translation pattern with the pattern 9999. The translation pattern has a Called Party Transform Mask of 9011442072431810.
Calling 9999 is successful.
configuring a blocking translation pattern
We take the same pattern, and set it to blocking. We can add a custom cause code.
And we try the call again. The line hangs up silently.
Adding a translation pattern that overlaps with a route pattern
Trying to add a translation pattern that overlaps with a route pattern won’t be accepted by CUCM: