Table of Contents
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UCM User Password
Network Settings
DNS Mode
Max Number Of Sip Request Retries
DNS SRV Failover Mode
Failback Expiration (m)
Register Before DNS SRV Failover
Primary IP
Backup IP 1
Backup IP 2
NAT Traversal
Input UCM user login password to connect UCM user settings.
This parameter controls how the Search Appliance looks up IP addresses for hostnames. If
"Use Configured IP" is selected, please fill in Primary IP, Backup IP 1 and Backup IP 2.
● A Record
● SRV
● NAPTR/SRV
● Use Configured IP
Sets the maximum number of retries for the device to send requests to the server. In DNS SRV
configuration, if the destination address does not respond, all request messages are resent to
the same address according to the configured retry times. Valid range: 1-10.
Configures the preferred IP mode for DNS SRV. If set to "default", the first IP from the query
result will be applied. If set to "Saved one until DNS TTL", previous IP will be applied before
DNS timeout is reached. If set to "Saved one until no response", previous IP will be applied
even after DNS timeout until it cannot respond.
● Default
If the option is set with "default", it will again try to send register messages to one IP at a time,
and the process repeats.
● Saved one until DNS TTL
If the option is set with "Saved one until DNS TTL", it will send register messages to the
previously registered IP first. If no response, it will try to send one at a time for each IP. This
behavior lasts if DNS TTL (time-to-live) is up.
● Saved one until no responses
If the option is set with "Saved one until no responses", it will send registered messages to the
previously registered IP first, but this behavior will persist until the registered server does not
respond.
● Failback follows failback expiration timer
If "Failback follows failback expiration timer" is selected, the device will send all SIP
messages to the current failover SIP server or Outbound Proxy until the failback timer expires.
Specifies the duration (in minutes) since failover to the current SIP server or Outbound Proxy
before making failback attempts to the primary SIP server or Outbound Proxy.
Configures whether to send REGISTER requests to the failover SIP server or Outbound Proxy
before sending INVITE requests in the event of a DNS SRV failover.
Configures the primary IP address where the phone sends DNS query to when "Use
Configured IP" is selected for DNS mode.
Configures the backup IP 1 address where the phone sends DNS query to when "Use
Configured IP" is selected for DNS mode.
Configures the backup IP 2 address where the phone sends DNS query to when "Use
Configured IP" is selected for DNS mode.
Configures whether NAT traversal mechanism is activated. Please refer to user manual for
more details.
If set to "STUN" and STUN server is configured, the phone will route according to the STUN
server. If NAT type is Full Cone, Restricted Cone or Port-Restricted Cone, the phone will try
to use public IP addresses and port number in all the SIP&SDP messages.
The phone will send empty SDP packet to the SIP server periodically to keep the NAT port
open if it is configured to be "Keep-alive". Configure this to be "No" if an outbound proxy is
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