User Guide

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8.12. Phone->Ext Key
Current Page:R73G can support 4 pages Ext Key. 20 Ext Keys for each
page.
Key: Allows users to assign specific feature to the designated key on
expansion module.
For keys, the available feature list:
DND, Menu, MSG, Status, Book, Fwd, PickUp, Group PickUp, Intercom,
Speed Dial, History, Favorites, Redial, Account, ACD, BLF, BLFList,Call
Return, Hot Desking, Record, XML Browser, DTMF.