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Automatic Failback
Only visible if 'Server Redundancy Feature' is enabled. Reconnect with higher priority
server once available, even if backup connection is still fine.
Polling Method
Only visible if 'Server Redundancy Feature' is enabled. SIP message used to poll servers
to monitor availability.
Keep-alive Method
If Double CRLF is selected the 8190 will periodically send a CRLF message for both UDP
and TCP connections to maintain connection with the SIP Server.
Keep-alive Interval
Interval in seconds that the CRLF message should be sent.
Use Outgoing TLS port in SIP headers
Use ephemeral port number from outgoing SIP TLS connection instead of listening port
number in SIP Contact and Via headers. This is useful to connect the device to some local
SIP servers, like Asterisk or FreeSWITCH.
Do Not Reuse Authorization Headers
When enabled, all SIP authorization information from the last successful request will not
be reused in the next request.
Advanced Settings Tab – Advanced Multicast
The default prepopulated multicast addresses above will work in most cases and should
only be altered for rare cases.
Audio Sync (Slave Mode)
When using multicast with other third-party devices that have a delay in their audio path,
the audio on the 8190 may be heard slightly earlier than on these other devices. By
adding audio delay up to one second, the 8190 may be synchronized with other speakers
or telephones that have greater latency. This feature applies to Multicast Slave mode only.
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.
Zone Definition
The "Expanded" Slave or Master zones can be enabled/disabled in Basic Settings >
Multicast. Default IP addresses and ports may be revised for any given zone in the table.
Document 90-00097A
05/22/2019
Page 42
Algo Communication Products Ltd
4500 Beedie St Burnaby BC Canada V5J 5L2
www.algosolutions.com
8190 SIP Classroom Speaker FW 1.7.3
(604) 454-3792
support@algosolutions.com
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