You cannot use these procedures to change trunk group assignments. You can only change trunk group assignments from the administration tool for the ACD system (for example, Communication Manager).

Automatic-in trunk groups, such as those that are used as Listed Directory Numbers, must be assigned to VDNs or splits through the ACD system.

DID or dial-repeating trunks, such as those that toll-free numbers are assigned to, are not assigned to VDNs or splits. The Central Office (CO) passes VDN digits or the split extension number to the ACD system.

Vector-controlled splits cannot have trunk groups assigned to them because they can only receive calls through vector processing.