Algo 8198 User Manual page 55

Backup Server #2
If backup server #1 is unreachable the 8198 will attempt to register with the 2nd backup
server. If enabled, the 8198 will always attempt to register with the highest priority
server.
Polling Intervals (seconds)
Time period between sending monitoring packets to each server. Non-active servers are
always polled, and active server may optionally be polled (see below).
Poll Active Server
Explicitly poll current server to monitor availability. May also be handled automatically by
other regular events, so can be disabled to reduce network traffic.
Automatic Fallback
Reconnect with higher priority server once available, even if backup connection is still
fine.
Polling Method
SIP message used to poll servers to monitor availability.
Keep-alive Method
If Double CRLF is selected the 8198 will send a packet every 30 seconds
(recommended value) to maintain connection with the SIP Server if behind NAT.
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.
Allow Missing Subscription-State Headers
When enabled, allow SIP NOTIFY messages that do not contain a "Subscription-State"
header.
Document 90-00109
2020-09-21
Page 55
Algo Communication Products Ltd
4500 Beedie St Burnaby BC Canada V5J 5L2
www.algosolutions.com
8198 SIP Ceiling Speaker PoE+
(604) 454-3792
support@algosolutions.com