Extension Number (for Group Fwd (External))Specifies the floating extension number of an incoming call distribution group or the extension number to setFWD remotely whose trunk calls will be forwarded.Value RangeMax. 5 digits (consisting of 0–9)Feature Guide References2.3.1 Call Forwarding (FWD)/Do Not Disturb (DND)—SUMMARY2.3.2 Call Forwarding (FWD)Extension Number (for Group Fwd (Internal))Specifies the floating extension number of an incoming call distribution group or the extension number to setFWD remotely whose intercom calls will be forwarded.Value RangeMax. 5 digits (consisting of 0–9)Feature Guide References2.3.1 Call Forwarding (FWD)/Do Not Disturb (DND)—SUMMARY2.3.2 Call Forwarding (FWD)Extension Number (for Log-in/Log-out)Specifies the floating extension number of an incoming call distribution group to log-in to or log-out from.Value RangeMax. 5 digits (consisting of 0–9)Extension Number (for Hurry-up)Specifies the floating extension number of the incoming call distribution group whose longest waiting call willbe redirected (Manual Queue Redirection).Value RangeMax. 5 digits (consisting of 0–9)Feature Guide References2.2.2.4 Queuing FeatureExtension Number (for Two-way Record)Specifies the floating extension number of the UM/VM (DPT) group containing the PS’s mailbox.Value RangeMax. 5 digits (consisting of 0–9)626 PC Programming Manual12.2.3 PBX Configuration—[4-2-3] Extension—Portable Station—Flexible Button