Grandstream Networks WP820 Administration Manual page 34

Enable Frame Skipping in Video Decoder
PTT/Multicast Settings
General Settings
Allow
PTT/Paging
If set to "Yes", the device can initiate PTT/Paging in the lock screen status.
When Lock
Screen Status
IGMP Keep-alive Specifies how often the phone report IGMP when PTT/ Paging function is turned on. IGMP reporter help to keep
Interval (s) PTT/ Paging receivable in dormant state. The interval may take some effect to standby time.
PTT/Group Paging
Settings
PTT multicast
Defines PTT multicast address.
address
Port Defines port number for PTT multicast address.
Emergency
PTT/paging Set default volume for PTT/paging when emergency channel/group is used.
volume
PTT Config
PTT Enable or disable PTT.
Defines default channel for PTT. When pressing and holding the PTT button, PTT will be initiated using the default
Default Channel
channel.
Defines priority channel for PTT. PTT received on priority channel will take precedence over active PTT on normal
Priority Channel
channel.
Defines emergency channel for PTT. Emergency channel has the highest priority. PTT using emergency channel will
Emergency
take precedence over PTT on priority or normal channel. Please note PTT to emergency channel will not be rejected
Channel
even when device has enabled DND.
Accept while Defines whether to accept PTT calls while device is in active call.
busy
● If set to "No", device will ignore PTT calls while in active call.
the one of the phones, the phone will stretch or compress video to
display it. If set to "Cut proportionally", the phone will cut video to
meet its own display proportion. If set to "Add black margin
proportionally", the phone will display video in its original
proportion. If it still exists spare space, the phone will add black
edge on it.
Enables the phone system for frame skipping in video decoder. If it
is enabled, the video decoder will skip the P frame and start
decoding from the next I frame. Enabling this option will help
reduce flickering in the video when the bandwidth is limited in the
network environment.
The default setting is "Yes".
Table 20: Video Settings