<div dir="ltr">Hello all;<br>I need some Clarification about timestamp header in RFC 3261; i need to use it to estimate the RTT value;<br>how it is work in this scenario?:<br><br> Invite <br>
UA --------------------> Proxy1<br> | | Invite<br> | | ------------------------------<div dir="ltr">--------->Proxy2<br> | 100 trying | |<br>
| <---------------------------| | invite<br> | | |<br> | | | --------------------------------------->UA2<br>
| | <-------100 trying------------------- | |<br> | | | <--------180 Ringing-------------- | <br>
| | <---------------180 Ringing------- | | <br> | | | |<br>
|<---180 Ringing----------| | |<br><br><br>UA
send invite to proxy1 with timestamp=10 ; then the Proxy1 send the
invite message to proxy2 and reply with provisional response (100
trying) and with timestamp=10 0.5; <br>
<br>When UA receive 100trying; UA will adapt its retransmition timer T1 to the calculated value from timestamp; <br>then UA adapt T2 Timer value; is This true?<br><br>Here Can Proxy1 send invite message with timestamp header?;<br>
for example timestamp=8 and when proxy2 recive invite request, it send it to UA and he send 100 trying to proxy1 with<br> timestamp=8 0.4;<br> <br>Please Help me;<br>Thanks;<br>Mustafa AL Rifaee<br></div></div>