Grandstream Networks GXP21 Series User Manual page 78

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Figure 51: Transfer from Information While Ringing and During Incoming Call
VPK Paging Support inside Call Screen
Users can use their VPK mode preconfigured with while in call screen. Such as Speed Dial, BLF, dial
DTMF..., as shown in the figure below.
http://192.168.5.136/export/screen/20170104-052525.png
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Figure 52: VPK Paging
Active VPK Page
Page 78
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