3Com 3C13618 Command Reference Manual page 232

Table 4-3 Description of QSIG timers
timer-name Timer
t301 T301
t302 T302
t303 T303
t304 T304
t305 T305
t308 T308
t309 T309
t310 T310
t313 T313
t316 T316
t322 T322
Normally, it is not necessary to change the values of QSIG signaling timers. If needed,
please do that with the guide of qualified technical personnel.
Table 4-4 Description of QSIG signaling timers
Timer Start-up condition
T301 ALERTING message is received.
Start up for sending SETUP ACK
T302 message, re-start upon receiving the
INFORMATION message.
T303 Send the SETUP message.
The SETUP ACK message is received or
T304
send the INFORMATION message.
T305 Send the DISCONNECT message.
T308 Send the RELEASE message
Data link layer fault occurs and there are
T309
calls in "ACTIVE" status.
The CALL PROCEEDING message is
T310
received.
T313 Send CONNECT message
T316 Send the RESTART message
T322 Send the STATUS ENQUIRY message
Value range (in seconds)
30 to 1200
5 to 60
2 to 10
10 to 60
4 to 30
2 to 10
10 to 180
10 to 180
2 to 10
2 to 180
2 to 10
CONNECT message is received.
Send the CALL PROCEEDING, ALERTING, CONNECT
messages.
The message CALL PROCEEDING, CONNECT,
ALERTING, SETUP ACK or RELEASE COMPLETE is
received.
The message CALL PROCEEDING, ALERTING or
CONNECT is received
The message RELEASE or DISCONNECT is received.
The message RELEASE or RELEASE COM is received.
Data link layer re-establishes the connection.
The message ALERTING, CONNECT, PROGRESS,
DISCONNECT or RELEASE is received.
Receive the CONNECT ACKNOWLEDGE message
Receive the RESTART ACKNOWLEDGE message
The message STATUS, DISCONNECT, RELEASE, or
RELEASE COMPLETE is received.
Link Layer Protocol
Default value (in seconds)
180
15
5
20
15
5
90
30
5
5
5
Shutdown condition
39