CallManager allows you to create Park positions in a couple of ways.
The most common is an all numeric numbering plan.
Example:
Example:
5000
500[0-9]
500X
However, it is possible to create Park positions with non-numeric characters.
While these can still function as park positions, CallManager will not provide proper CTI information on those positions. Furthermore, it has been noted that if there are a very large number of these, the Cisco TSP from CallManager 10.5.2 will crash providing no CTI for any DNs.
Examples:
*5000
#5000
*500[0-9]
*500X
Bridge Communication Operator Console only supports all numeric globally unique park DN's.