Grandstream Networks WP810 Series Administration Manual page 28

Register Expiration
Subscribe Expiration
Reregister Before
Expiration
Enable OPTIONS Keep
Alive
OPTIONS Keep Alive
Interval
OPTIONS Keep Alive Max
Lost
Enable TCP Keep Alive
Local SIP Port
SIP Registration Failure
Retry Wait Time
SIP T1 Timeout
SIP T2 Timeout
SIP Timer B Timeout
SIP Timer F Timeout
REGISTER message will contain "Expires: 0" to unbind the connection. Three options are
available: The default setting is "No".
● If set to "All", the SIP user's registration information will be cleared when the phone
reboots. The SIP Contact header will contain "*" to notify the server to unbind the
connection.
● If set to "Instance", the SIP user will be unregistered on current phone only.
● If set to "No", the phone will not unregister the SIP account when rebooting.
Specifies the frequency (in minutes) in which the phone refreshes its registration with the
specified registrar. The default value is 60 minutes.
The maximum value is 64800 minutes (about 45 days).
Specifies the frequency (in minutes) in which the phone refreshes its subscription with the
specified registrar. The maximum value is 64800 (about 45 days).
The default value is 60 minutes.
Specifies the time frequency (in seconds) that the phone sends re-registration request before
the Register Expiration.
The default value is 0.
Enable OPTIONS Keep Alive to check SIP Server.
Time interval for OPTIONS Keep Alive feature in Second.
Number of max lost packets for OPTIONS Keep Alive feature before the phone re-registration.
Enable TCP keep alive for the respective SIP account when the account protocol uses
TCP/TLS.
The default setting is "No".
Defines the local SIP port used to listen and transmit. The default value is 5060 for Account 1,
5062 for Account 2, 5064 for Account 3, 5066 for Account 4, 5068 for Account 5, 5070 for
Account 6.
The valid range is from 1 to 65535.
Specifies the interval to retry registration if the process is failed. The valid range is 1 to 3600.
The default value is 20 seconds.
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.
Timer B is the maximum amount of time that a sender will wait for an INVITE message to be
acknowledged.
Default value is 0.
The range must be between 0, 2-128
Timer F is the maximum amount of time that a sender will wait for a non INVITE message to
be acknowledged.