Welltech WG5290 - Manual (Page 73)

Welltech Computer Co., Ltd.
WellGate 5290 User Guide – V6.1 - 73 -
• Send Receive Buffer Size: The buffer size used by SIP Stack for
receiving and sending SIP messages.
• Reject Unsupported Extension: Yes or No
• Message Pool Page Size: Used to hold and process all incoming and
outgoing message in the form of encoded messages or message
objects. It is recommended that you configure the page size to the
average message size your system is expected to message.
• General Pool Page Size: Used by SIP Stack objects, such as call-legs
and transaction, to store the internal fields. For example, the call-legs
object will store the To, From and Call-ID headers and the local and the
remote contact addresses on the general pool pages. The general pool
is also used from other activities that demand memory allocation.
• Application Pool Page Size: The size of page in the application pool
• Retransmission T1: T1 determines several timers as defined in
RFC3261. For example, when an unreliable transport protocol is used,
a Client Invite transaction retransmits requests at an interval that start
at T1 seconds and doubles after every retransmission. A Client General
transaction retransmits requests at an interval that starts at T1 and
doubles until it reaches T2. (Default Value: 500)
• Retransmission T2: Determines the maximum retransmission interval
as defined in RFC3261. For example, when an unreliable transport
protocol is used, general requests are retransmitted at an interval
which starts at T1 and doubles until reaches T2. If a provisional
response is received, retransmission continue but at an interval of T2.
(Default Value: 4000)
• Retransmission T4: T4 represents the amount of time the network
takes to clear message between client and server transactions as
defined in RFC3261. For example, when working with an unreliable
transport protocol, T4 determines the time that UAS waits after
receiving an ACK message and before terminating the transaction.
(Default Value: 5000)
• Invite Linger Timer: After sending an ACK for an INVITE final response,
a client cannot be sure that the server has received the ACK message;
the client should be able to retransmit the ACK upon receiving
retransmissions of the final response for invite Linger Timer
milliseconds.
• General Linger Timer: After a server sends a final response, the server
cannot be sure that the client has received the response message. The
server should be able to retransmit the response upon receiving
retransmissions of the request for general Linger Timer milliseconds.
(Default Value: 32000)
• Provisional Timer: When a client receives a provisional response, it
continues to retransmit the request, but with an interval of provisional
Timer milliseconds.
• Cancel General No Response Timer: When sending a CANCEL
request on a General transaction, the User Agent waits cancel General
No Response Timer milliseconds before timeout termination if there is
no response for the cancelled transaction.