Hi,
Thanks for your answer
But if there is no port information,
how can I register with To header with port?
For example,
REGISTER sip:159.226.1.3 SIP/2.0
Via: SIP/2.0/UDP 159.226.1.1
From: sip:[EMAIL PROTECTED]:5010
To: sip:[EMAIL PROTECTED]:5010
Call-ID: [EMAIL PROTECTED]
CSeq: 1 REGISTER
Contact: <sip: sip:[EMAIL PROTECTED]:5010>
Content-Length: 0
I don't know how bis09 defined.
But in this case,how can register know the wanted port of the inviter if I can't use
port information?
>From Via?
Thanks
luoqiang
__________________________________________________________
address of ua1 -> Contact
But, response path is Via header.
As bis09, From and To don't accept port.
t:sip:[EMAIL PROTECTED]:5060
==> t:sip:[EMAIL PROTECTED]
khlee
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of luoqiang
Sent: Thursday, March 28, 2002 1:34 AM
To: [EMAIL PROTECTED]
Subject: [Sip-implementors] A basic sip question
Hi,
I am a beginer for sip.
After reading the rfc,I have some questions.
e.g:
ua1: sip:[EMAIL PROTECTED]:5060
ua2: sip:[EMAIL PROTECTED]:5061
when ua1 call ua2,the message would be:
INVITE sip:[EMAIL PROTECTED]:5061 SIP/2.0
v:SIP/2.0/UDP 10.10.1.1
f:sip:[EMAIL PROTECTED]
t:sip:[EMAIL PROTECTED]:5060
i:[EMAIL PROTECTED]
m:[EMAIL PROTECTED]:5061
c:application/sdp
Suppose there are no proxies between them.
The message should be forworded to ua2 and ua2 should send a 180 response.
But where does the ua2 get the adress of ua1?
Via?From?Contact?
I was puzzled after reading the rfc,because it seems that all above headers is correct.
Which is the ua2's chioce?
Thanks!
luoqiang
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