Analog Trunk Data Setup Behind PBX Setup Music on Hold Source for Trunks Conversation Recording Destination for Trunk Timer Class for Trunk Description Enter the extension, trunk, group or other number from which the data is to be copied. Enter the first extension, trunk, group or other number to which the information is to be copied. Enter the last extension, trunk, group or other number to which the information is to be copied. If the information is being copied only to one extension, trunk, group or other number, enter the information entered in the Destination Number (From) entry. Trunk Group Routing for Trunks 21-12 21-21 21-22 ISDN Calling Party Number Setup for Trunk Toll Restriction for Trunks CO Message Waiting Indication