Grandstream GXP1100 User Manual - Manual (Page 21)

FIRMWARE VERSION 1.0.8.4 GXP1100/GXP1105 USER MANUAL Page 19 of 53

Multiple calls. Automatically place active call on hold or switch between two calls by pressing the
FLASH key. Call waiting tone (stutter tone) will be audible when the line is in use.
Note:
If users hang up the current call while there is a call on hold in the other line, there will be an audible ring
tone indicating a call is on hold while your handset is put on hook. Pick up the handset so users can
resume with the call on hold.
MUTE
During an active call, press the MUTE key to mute/unmute the microphone.
CALL TRANSFER
GXP1100/GXP1105 supports Blind Transfer, Attended Transfer and Auto-Attended Transfer.

Blind Transfer.
 During the first active call, press TRAN key and dial the number to transfer to;
 Press SEND key or # to complete transfer of active call.

Attended Transfer.
 During the first active call, press FLASH key. The first call will be put on hold;
 Enter the number for the second call and establish the call;
 Press TRAN key;
 Press FLASH key to transfer the call.

Auto-Attended Transfer.
 Set "Auto-Attended Transfer" to "Yes" under Web GUI->Settings->Call Features. And then click
"Save and Apply" on the bottom of the page;
 Establish one call first;
 During the call, press TRAN key. A new line will be brought up and the first call will be
automatically placed on hold;