Grandstream Networks GXP21 Series User Manual page 82

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Figure 56: Account Mode
For example, with line mode, when the line is in use, by pressing the VPK, nothing is going to happen.
In Account Mode, when the line is in use, by pressing the VPK, a new line will be initiated.
Note:
In "account mode", the phone adds the "NewCall" softkey and the user is able to make a second call
directly using this softkey whether available or on hold.
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Figure 57: "NewCall" Softkey during the call and on Hold
4-Way/ 5-Way Conferencing
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