In this post we will lean some of Cisco CUCM wildcards. They are used in route patterns and translation patterns. I lay down the most popular CUCM wildcards in the paragraphs below.
the X wildcard
The X wildcard replaces only one character. For example, 587X pattern has 10 combinations: from 5870 to 5879.
The @ wildcard
The @ wildcard is a macro. Each time you use it, CUCM replaces it with a number of route patterns that correspond to the numbering plan you chose. For example, if you choose to use the North American numbering plan with the @ wildcard, CUCM will internally generate some US route patterns such as the following:
So let’s say you have two gateways that you want to use for egress calls. You assign the first gateway to the @ route pattern and the second to the XXXXXXX route pattern. The call will be routed through the first gateway, because there is the route pattern [2-9]XXXXXX, which is a better match than XXXXXXX.
The brackets  wildcard
With a bracketed pattern, you can have any digit from the available options. for example, 223 pattern has the following possibilities:
The negated brackets wildcard
the X wildcard
The X wildcard replaces only one character
The + wildcard
This wildcard means “one or more of the preceding character”. For example, 444+ pattern can have the following possibilities: 4441, 444111, 44466,…
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