[SIPForum-techwg] Cseg number

[Rohan Mahy]

Hi Wang,

Your question is out of scope of this mailing list which is for 
discussing Tech WG chartered documents.

However, I suggest you look at the examples in RFC 3665.

thanks,
-rohan


On Mar 14, 2006, at 9:10, Wang Chen Kuang-Voice wrote:

> Hi People,
>
>                Can somebody help me? my question is number of CSeq of
> one party "must" be sequence(i.e CSeq(current)=CSeq(last)+1)?
>
>
>
>
> My Call Flow
>
>> A=UA1
>> P=Proxy
>> B=UA2
>>
>>
>> A                                            P                        
>>            B
>> ----------------invite(Cseg=3)------------>
>>
>>                                               
>> ----------------invite------------>
>>
>>                                               
>> <---------------Trying-------------
>> <-------------trying------------------------
>>
>>                                               
>> <--------------ring----------------
>> <-------------ring--------------------------
>>                                               
>> <-------------200ok----------------
>> <------------200ok--------------------------
>> -----------------ack(Cseg=3)--------------->
>>
>>                                                
>> ----------------ack--------------->
>> ------------invite of hold(Cseg=4)--------->
>>
>>                                                
>> ----------------invite------------>
>>
>>                                                
>> <-----------------Trying-----------
>> <-----------trying--------------------------
>>
>>                                                
>> <----------------200ok-------------
>> <---------------200ok-----------------------
>> -------------------ACK(Cseg=4)------------->
>>
>>                                                 
>> ------------------ACK------------->
>> --------refer(Cseg=5)---------------------->
>>
>>                                                 
>> -----------------Refer------------>
>>
>>                                                 
>> <-------------acceptded------------
>> <----------------accepted-------------------
>>
>>                                                 
>> <---------------notify-------------
>> <-------notify(Cseg=3)----------------------
>> ------------------200ok-------------------->
>>
>>                                                 
>> ------------------200ok----------->
>>  --------bye(Cseg=8(?!))----->           it is correct?
>>
>>
>
>
> Best regards
>
> Wang Chen Kuang
>
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