---------------------------------sipp as client (sender)--------------------------------- The command is as follows: [root@localhost:~]# ./sipp -sn uac 192.168.1.35:5070 -mp 6001 -s 300 -r 20 -d 100000 I have configured asterisk on 5070 port because another sipp is listening on 5060. Here call rate is 20 and hangup time is 100 sec. so there will be 2000 concurrent calls at any time. 300 is extention to dial on another sipp After some time it will look like this: ------------------------------ Scenario Screen -------- [1-5]: Change Screen -- Call-rate(length) Port Total-time Total-calls Remote-host 20.0(100000 ms)/1.000s 5061 292.61 s 5852 192.168.1.35:5070(UDP) 20 new calls during 1.003 s period 4 ms scheduler resolution 2001 concurrent calls (limit 6000) Peak was 2201 calls, after 247 s 0 out-of-call msg (discarded) 1 open sockets Messages Retrans Timeout Unexpected-Msg INVITE ----------> 5852 0 0 100 <---------- 5852 0 0 180 <---------- 5852 0 0 183 <---------- 0 0 0 200 <---------- E-RTD 5852 0 0 ACK ----------> 5852 0 Var Pause [ 100000ms] 5852 0 BYE ----------> 3851 0 0 200 <---------- 3851 0 0 ------ [+|-|*|/]: Adjust rate ---- [q]: Soft exit ---- [p]: Pause traffic ----- ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ---------------------------------sipp as server (receiver) --------------------------------- very simple: [root@localhost:~]# ./sipp -sn uas After some time... ------------------------------ Scenario Screen -------- [1-5]: Change Screen -- Port Total-time Total-calls Transport 5060 297.55 s 5918 UDP 20 new calls during 0.123 s period 3 ms scheduler resolution 2002 concurrent calls Peak was 2284 calls, after 263 s 1 open sockets Messages Retrans Timeout Unexpected-Msg ----------> INVITE 5918 0 0 <---------- 180 5918 0 <---------- 200 5918 0 ----------> ACK E-RTD 5918 0 0 ----------> BYE 3916 0 0 <---------- 200 3916 0 [ 4000ms] Pause 3916 0 ------------------------------ Sipp Server Mode -------------------------------