Dear All, CHD can be triggered when INVITE is received with SDP having c=IN IP4 0.0.0.0 ormode=inactive or mode=sendonly But this a implementation decision.Best regards,Harpreet
> Date: Tue, 17 Oct 2006 10:46:56 +0530> From: [EMAIL PROTECTED]> To: [EMAIL > PROTECTED]> CC: [email protected]; [EMAIL PROTECTED]; [EMAIL > PROTECTED]> Subject: Re: [Sip-implementors] Query: Call Hold Implementation > in SIP/SDP> > Hi Varun> If I get your point, you are trying to differentiate > call on hold with> one way audio.> > Music on hold implemented is using one > way audio (sendonly(in offer)> and recvonly(in answer)).> > Practically, hold > (without music) is done by exchanging sdp with> attribute as inactive. Also, > in case it is done with a=sendonly(in> offer) and a=recvonly(in answer), the > UAC may chose not to send any> RTP data at all.> > Also INVITE (sendonly) and > reINVITE (sendonly) can be treated as 1 way> audio and call hold > respectively.> > Hope this helps.> > _______________________________________________> Sip-implementors mailing > list> [email protected]> > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _________________________________________________________________ All-in-one security and maintenance for your PC. Get a free 90-day trial! http://www.windowsonecare.com/purchase/trial.aspx?sc_cid=wl_wlmail _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
