Welltech SIPPBX 6200 V.3.1.0 - Manual (Page 69)

Welltech Computer Co., Ltd.
SIPPBX 6200S/GS Release 3.1.0 User Guide - 69 -
until it reaches T2. (Default Value: 500ms) **
• Retransmission T2 (ms): 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: 4000ms) **
• Retransmission T4 (ms): 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 (ms): 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 inviteLingerTimer milliseconds.
• General Linger Timer (ms): 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 generalLingerTimer milliseconds.
• Provisional Timer (ms): The provisionalTimer is set when receiving a
provisional response on an INVITE transaction. The transaction will stop
retransmissions of the INVITE request and will wait for a final response
until the provisionTimer expires. If you set the provisionTimer to 0, no timer
is set. The INVITE transaction will wait indefinitely for the final response.
• Cancel General No Response Timer (ms): When sending a CANCEL
request on a General transaction, the User Agent waits
cancelGeneralNoResponse Timeer milliseconds before timeout termination
if there is no response for the cancelled transaction(Default Value:
10000ms).**
• Cancel Invite No Response Timer (ms): When sending a CANCEL request
on a Invite transaction, the User Agent waits
cancelInviteNoResponseTimer milliseconds before timeout termination if
there is no response for the cancelled transaction(Default Value:
10000ms).**
• General Request Timeout Timer (ms): After sending a General request, the
User Agent waits for a final response generalRequestTimeoutTimer