Parameter name
Default value
Required settings
SIP_CONTROLLER_LIST
Null
This parameter must be
configured to provide redundant
sip servers FQDN for the phone
to connect to.
It must contain only 1 entry of the
following format.
host1[:port1]
[;transport1=xxx];
Host must be a FQDN. Host
cannot be IPV6 address.
Port and transport values are
optional. However, if these values
are known, provide them in the
settings.
An example setting:
SIP_CONTROLLER_LIST =
servers.sample.com:tcp:
5060
When SIP_CONTROLLER_LIST
contains FQDN, phone uses DNS
to resolve the FQDN into IP
addresses. If an FQDN resolves
to multiple IP addresses, phone
uses the first resolved entries.
The number of entries phone
uses is determined by
MAX_DNS_DISCOVERED_SIP_
CONTROLLERS. If the FQDN
resolves to one entry or if the host
in SIP_CONTROLLER_LIST
contains an IPV4 address, though
supported, it is not a redundant
signaling configuration.
MAX_DNS_DISCOVERED_SIP_
CONTROLLERS
2
This parameter specifies the
maximum number of the SIP
controllers to be used for
redundancy from DNS lookup.
The value ranges from 2–6 SIP
controllers.
Set the following parameter when using UDP protocol:
SIP server redundancy
April 2020
Installing and Administering Avaya J100 series IP Phones in an Open SIP
environment
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