Continuation of my prev thread: The RFC 3312, says about Current, desired status , strength tag etc.. but this to ensure that session should be established only when the pre-conditions are met by both end.
But what all the Pre-conditions, still its not clear to me. I appreciate your help. On Thu, Feb 25, 2010 at 11:35 AM, Premalatha Kuppan < [email protected]> wrote: > As you said, Jitter and Delay are related to RTP. > > But QOS is for Media (audio/Video) right ? During session establishment, > there is an option to send the BW in SDP, likewise is there any other > parameters to carry other QOS parameters (like jitter, delay, throughput > etc...). > > Because, the draft says, > > a=curr:qos e2e send > a=des:qos optional e2e send > a=des:qos mandatory e2e recv > > > > Also RFC 3312 says, Precondition defined for QOS and there would be a local > status table and transaction status table. But i couldn't understand what > exactly value or QOS related parameters would be there in those tables. > SInce its at UA, each UA can have different QOS capabilities (!?). > > Correct me if iam wrong. > > > > On Thu, Feb 25, 2010 at 10:14 AM, Avasarala Ranjit-A20990 < > [email protected]> wrote: > >> >> The jitter and delay are related to RTP. So a SDP that is part of SIP >> INVITE cannot send them. >> >> >> Regards >> Ranjit >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> Kamalakanta Palei (kpalei) >> Sent: Thursday, February 25, 2010 7:45 AM >> To: Premalatha Kuppan; [email protected] >> Subject: Re: [Sip-implementors] QoS paramters >> >> >> I have not seen jitter and delay parameters in SDP. >> >> Thanks >> Kamal >> Cisco, Bangalore >> India >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of >> Premalatha Kuppan >> Sent: Wednesday, February 24, 2010 11:19 PM >> To: [email protected] >> Subject: Re: [Sip-implementors] QoS paramters >> >> Thanks. >> >> Between, regarding precondition on QOS, i read the RFC 3312. But still >> not clear whether the UA sends other QOS parameters like jitter, Delay >> other than BW. >> >> If someone brief it, it would be good. >> >> On Wed, Feb 24, 2010 at 7:24 PM, Kamalakanta Palei (kpalei) < >> [email protected]> wrote: >> >> > Hi Prem >> > You can explore more on below SDP. That will give better understanding >> >> > on precondition QoS. >> > >> > m=video 3400 RTP/AVP 98 99 >> > b=AS:75 >> > a=curr:qos local none >> > a=curr:qos remote none >> > a=des:qos mandatory local sendrecv >> > a=des:qos none remote sendrecv >> > >> > Thanks >> > Kamal >> > Cisco, Bangalore >> > India >> > >> > -----Original Message----- >> > From: [email protected] >> > [mailto:[email protected]] On Behalf Of >> > Bharat S >> > Sent: Wednesday, February 24, 2010 10:25 AM >> > To: Premalatha Kuppan; [email protected] >> > Subject: Re: [Sip-implementors] QoS paramters >> > >> > RFC 3312 explains the SDP Preconditions mechanism that allows UE to >> > delay completion of a SIP session establishment until one or both >> > sides have successfully completed their resource reservation. >> > >> > IETF has defined the precondition-type "qos". >> > >> > -Bharat >> > >> > >> > >> > >> > >> > ________________________________ >> > From: Premalatha Kuppan <[email protected]> >> > To: [email protected] >> > Sent: Tue, February 23, 2010 3:30:38 PM >> > Subject: [Sip-implementors] QoS paramters >> > >> > Hi, >> > >> > Please tell me what are all the QOS related paramters carried in >> > SIP/SDP (both in answer and offer). >> > >> > Thanks, >> > Prem >> > _______________________________________________ >> > Sip-implementors mailing list >> > [email protected] >> > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors >> > >> > >> > >> > >> > _______________________________________________ >> > Sip-implementors mailing list >> > [email protected] >> > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors >> > >> _______________________________________________ >> Sip-implementors mailing list >> [email protected] >> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors >> >> _______________________________________________ >> Sip-implementors mailing list >> [email protected] >> https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors >> > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
