Transmitter Settings
Transmitter Output Codec
This is the audio encoding format used by the Transmitter device when sending output to the Receivers.
Output Packetization Time (milliseconds)
The size of the audio packets sent by the Transmitter to the Receivers. The default of 20 ms is recommended unless a
different value is specifically required for compatibility with other devices.
Multicast TTL
The multicast time to live (TTL) setting should only be changed if custom routing is configured on the network that
specifically routes multicast packets between subnets and a longer TTL count is required. This ensures packets are not
bounced back and forth in a network identity. When the TTL is reached, the router drops the packet.
Receiver Settings
RTCP Port Selection
Select the port on which RTCP packets will be sent or received. If using the 'Next Higher Port' option, ensure that the
default multicast zone definitions are modified such that zones are only assigned to even-numbered ports, leaving the
next higher odd-numbered ports free for RTCP packets.
Polycom Receiver Tones
Available if Multicast Receiver and ‘Polycom Group Page’ or ‘Polycom Push-to-Talk’ are selected in the Basic Settings
→ Multicast tab. A tone may be set for any of the 25 Polycom Groups. If using an Algo device as a Multicast Sender, it
is recommended to set the Receiver tones to ‘None’ to avoid conflicts, as the Algo devices already multicast a tone by
default.
Basic Zone Definitions
Zones
The ‘Expanded’ Receiver zones can be enabled/disabled in Basic Settings → Multicast. Default IP addresses and ports
may be revised for any given zone in the table.
Page Tone and Page Volume
Sender Mode: By default, the same tone can be set for all Receiver zones in the Basic Settings → Features tab. Unique
paging tones may be revised for any given zone in the table above.
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