[SIPForum-discussion] Sdp attribute for Call hold

[Mirchandani, Pushpa]

Here you go

Hi Ankur,
>
> a=inactive is used when the user wants neither to send data or receive
> any data on its port. By a=sendonly, user means that "I would not like
> to receive any media from you" and asking the other side to keep quite
> but it can send media. This is the main difference between inactive
> and sendonly.
>



> Thanks & regards,
> Chandra Madduri
> +91 98858 12968


From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Keyur Amin
Sent: Thursday, June 27, 2013 10:26 AM
To: Banda, Srinivas (Srinivas); ankur bansal; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Sdp attribute for Call hold

Hi Ankur,

a=sendonly is the correct way. Here is some text from the rfc.


5.1 Unicast Streams



   If the offerer wishes to only send media on a stream to its peer, it

   MUST mark the stream as sendonly with the "a=sendonly" attribute.  We

   refer to a stream as being marked with a certain direction if a

   direction attribute was present as either a media stream attribute or

   a session attribute.  If the offerer wishes to only receive media

   from its peer, it MUST mark the stream as recvonly.  If the offerer

   wishes to communicate, but wishes to neither send nor receive media

   at this time, it MUST mark the stream with an "a=inactive" attribute.

Thanks,
Keyur Amin
________________________________



________________________________
From: "Banda, Srinivas (Srinivas)" <sribanda at avaya.com>
To: ankur bansal <abh.ankur at gmail.com>; "discussion at sipforum.org" <discussion at sipforum.org>
Sent: Wednesday, June 26, 2013 1:45 AM
Subject: Re: [SIPForum-discussion] Sdp attribute for Call hold

Hi Ankur,

If a party is holding the call and the media attribute says SENDONLY, it means the party is using the MUSIC-ON-HOLD feature.

Regards
Srinivas

From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of ankur bansal
Sent: Wednesday, June 19, 2013 11:26 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Sdp attribute for Call hold

Hi All

Can anyone explain why a=sendonly is sent in offer from side performing HOLD ?
I think a=inactive should be right way of holding call .
Any specific scenario which explain when to use sendonly and when inactive

Thanks & regards
Ankur Bansal

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