Config attributes
Default
Value
Type
Values
Description
voip.timer-se
1800
NUMBER
90 - 604800
The expiration period is the interval at which the phone will consider the
SIP session timed out if it does not receive a refresh message from the
remote phone. At call negotiation, the nodes will negotiate the expiration
period to be used for the session. If the negotiated value is less than the
session timer’s
minimum expiration, then the session timer minimum
expiration is used instead. It is measured in seconds and must be greater
than 90.
voip.timer-min-se
90
NUMBER
1 - 604800
This is the minimum session timer expiration period that the FLX UC will
accept when negotiating the expiration period with the remote phone. If
the session timer expiration duration is less than this value, this value is
used instead. It is measured in seconds.
voip.use-100rel
0
BOOLEAN
0="False"
1="True"
Implements reliable SIP provisional responses. By default the setting is
unchecked. SIP is a request-response type of protocol with two types of
responses: provisional and final. Final responses are sent reliably, using an
ACK to ensure receipt. Provisional responses by default are not sent reliably
and do not require an ACK; however, in some cases, such as for PSTN
interoperability support, reliability of provisional types of responses is
needed. Choose this option to add the PRACK (provisional ACK) message
support for reliability.
voip.auto-update-nat 1
BOOLEAN
0="False"
1="True"
Used for FLX UC behind a symmetric NAT (Network Address Translation).
When enabled, FLX UC will keep track of the public IP address from the
response of the REGISTER request. If it detects that the address has
changed, it will unregister the current Contact, update the Contact with the
transport address obtained from the Via header, and register a new Contact
to the SIP registrar. This option will also update the public name of the UDP
transport if STUN is configured.
voip.no-refer-sub
0
BOOLEAN
0="False"
1="True"
When transferring a SIP call, the SIP REFER process automatically
establishes a temporary event subscription to notify the party initiating the
transfer about the receiver's status in handling the REFER. In some cases
these event subscriptions and notifications are not needed, such as when
forking is not used. Enable this option to suppress the automatic event
