Conditions• KX-NSU301, KX-NSU305, KX-NSU310, KX-NSU320, or KX-NSU399 (Activation Key for Two-wayRecording) is required to use this feature. One activation key is required for each extension that will usethis feature.• Two-way Record/Two-way Transfer ButtonA flexible button can be customized as the Two-way Record or the Two-way Transfer button. An extensionnumber can be assigned to the Two-way Transfer button so that it can be used as a one-touch recordbutton for the mailbox of the specified extension (One-touch Two-way Transfer Button).• When all of the Unified Messaging ports are busy:a. Pressing the Two-way Record button sends a warning tone.b. Pressing the Two-way Transfer button followed by an extension number sends a warning tone.• To allow unlimited recording time, the "Message Length" parameter of the subscriber’s Class of Service(COS) must be set to "Unlimited".® 21.1 UM Configuration—[2] Class of Service—Mailbox— Message Length (Selection)PC Programming Manual References12.1.1 PBX Configuration—[4-1-1] Extension—Wired Extension—Extension Settings—UM— Two-wayRecording12.1.4 PBX Configuration—[4-1-4] Extension—Wired Extension—Flexible Button→ Extension Number (for Two-way Record)→ Extension Number (for Two-way Transfer)→ Extension Number (for Voice Mail Transfer)12.2.1 PBX Configuration—[4-2-1] Extension—Portable Station—Extension Settings—UM— Two-wayRecording12.2.3 PBX Configuration—[4-2-3] Extension—Portable Station—Flexible Button→ Extension Number (for Two-way Record)→ Extension Number (for Two-way Transfer)→ Extension Number (for Voice Mail Transfer)21.1 UM Configuration—[2] Class of Service—Mailbox— Two-way Recorded Message Save ModeFeature Manual References7.1.3 Flexible ButtonsOperating Manual ReferencesSubscriber Operation1.6.6 Other Features— Recording Your Conversation3.1.4 Customizing the Buttons20.1.91 Unified Messaging—Urgent MessageDescriptionAllows subscribers, callers, and the System Manager to specify a message as "Urgent". When a subscriberlistens to messages, urgent messages will be given priority over other messages in a mailbox (i.e., they willbe played first) if the "First Playback Urgent Messages" parameter of the subscriber’s Class of Service (COS)is set to "Yes". If "Only Urgent Messages" is set as the Notification Type for the subscriber’s mailbox, MessageWaiting Notification will be activated only when an urgent message is received.436 Feature Manual Document Version 2016-0320.1.91 Unified Messaging—Urgent Message