Welltech WellRec 5600 V.1.5 - Manual (Page 24)

Welltech Computer Co., Ltd.
WellRec 5600 - 24 -
Click the Advance button:
Figure 5.1-2
Advance Parameter Description:
Message Pool Page Size: Used to hold and process all incoming and
outgoing in the form of encoded message or message objects. It is
recommended that you configuration the page size to the average
message size your system is expected to manage.
Message Pool Num of Pages: The pages number of Message Pool
General Pool Page Size: Used by SIP Stack objects, such as call-legs and
transactions, to store the internal fields. For example, the call-leg object
will store the To, Form and Call-ID headers and the local and remote
contact addresses on the general pool pages. The general pool is also
used for other activates that demand memory allocation.
General Pool Num of Pages: The pages number of General 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: 500ms) **
Retransmission T2: Determine 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 continues but at an interval of T2. (Default Value: 4000ms)
**
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) **
General Request Timeout Timer: After sending a General request, the
User Agent waits for a final response generalRequestTimeoutTimer
milliseconds before timeout termination (in this time the User Agent
retransmits the request every T1, 2*T1,…T2,…milliseconds)**
Cancel General No Response Timer: When sending a CANCEL request on
a General transaction, the User Agent waits Cancel General No Response