Icom VE-PG4 Operating Guide ver.1.36 - Page 288

11 PBX Extension Group screen PBX > Extension Group You can group up to 50 extension numbers into an Extension Group. You can select the extension (SIP phone) to be incoming and the extension not to receive incoming within the set group. ■■Extension Group Entry Used to newly enter an extension group number. * Do not duplicate the Extension numbers and Extension Group numbers. You can check the extension number and its model name on the "Extension" screen. (PBX > Extension) Ringing Sequence: Simultaneous 1 2 3 4 5 6 7 8 1 Port Type 2 Extension Group Number 3 Extension Group Name � 4 Ringing Sequence Select the Port Type that you want to copy the settings.  (Default: SIP Phone) Enter a Extension Group number. •• Range: Number in 2 ~ 7 digits Enter the Extension Group name of up to 31 characters. Select the action when a call is incoming. Simultaneous: In Simultaneous ringing sequence, when the primary receiver cannot respond for a certain period of time, you can change to the secondary receiver. You can set the receiver's extension from the primary to the tertiary for a call. Sequential: In Sequential ringing, you can set the ringing extension group. 11-15