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Local SIP Port
SIP URI Scheme when using TLS
Use Actual Ephemeral Port in Contact
with TCP/TLS
Support SIP Instance ID
SIP T1 Timeout
SIP T2 Timeout
Outbound Proxy Mode
Enable 100rel
Use Route Set in Notify (Follow RFC
6665)
Session Timer
Enable Session Timer
Session Expiration
Min-SE
● If set to "Dual (Secured)", phone will listen to TLS/TCP when UDP is selected. If "TCP"
or "TLS/TCP" is selected, UDP will be listened too.
● If set to "Dual (BLF Enforced)", phone will try to enforce BLF subscriptions to use TCP
protocol by adding 'transport=tcp' to the Contact header.
The default setting is "Transport Only".
Configures the local SIP port used to listen and transmit.
Specifies if "sip" or "sips" will be used when TLS/TCP is selected for SIP Transport. The
default setting is "sips".
Configures whether the actual ephemeral port in contact with TCP/TLS will be used when
TLS/TCP is selected for SIP Transport.
The default setting is "No".
Configures whether SIP Instance ID is supported or not.
The default setting is "Yes".
SIP T1 Timeout is an estimate of the round-trip time of transactions between a client and
server. If no response is received the timeout is increased and request re-transmit retries would
continue until a maximum amount of time define by T2. The default setting is 0.5 seconds.
SIP T2 Timeout is the maximum retransmit time of any SIP request messages (excluding the
INVITE message). The re-transmitting and doubling of T1 continues until it reaches the T2
value. Default is 4 seconds.
Configures whether to put the Outbound Proxy in the Route header, or if SIP messages should
always be sent to Outbound Proxy.
1. In route
2. Not in route
3. Always send to
Default is "in route".
When enabled, the 100rel tag is appended to the value of the Supported header of the initial
signaling messages.
The default setting is "No".
Configures whether to use route set in NOTIFY (follow RFC 6665).
● If enabled, the Request URI of the refresh subscription will use the URI in the received
NOTIFY Contact (RFC 6665).
● If disabled, the URI in the previously subscribed 200 OK Contact will be used.
Configures whether to enable session timer function. It enables SIP sessions to be periodically
"refreshed" via a SIP request (UPDATE, or re-INVITE). If there is no refresh via an UPDATE
or re-INVITE message, the session will be terminated once the session interval expires. If set
to "Yes", the phone will use the related parameters when sending session timer according to
"Session Expiration". If set to "No", session timer will be disabled.
The default setting is "No".
Session Expiration is the time (in seconds) where the session is considered timed out, provided
no successful session refresh transaction occurs beforehand.
The default setting is 180. The valid range is from 90 to 64800.
The minimum session expiration (in seconds). The default value is 90 seconds. The valid
range is from 90 to 64800.
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