Hi,

Paul answered your question.  However if something is actually sending
mixed case "SendOnly", it might have interoperability problems since RFC
4566 section 5 discusses values as being case-sensitive unless a specific
field defines otherwise.


> -----Original Message-----
> From: [email protected] [mailto:sip-
> [email protected]] On Behalf Of Sylvester,
Prasanth
> (Nokia - IN/Mumbai)
> Sent: Tuesday, May 12, 2015 9:35 AM
> To: sip-implementors
> Subject: [Sip-implementors] SIP Call on hold - Reinvite Session
Attribute Vs
> Media Attribute
>
> Hi Team,
>
> I've a small doubt. I have a working call where A party is talking to B
> party. B party putts the call on hold, however I see "Session Attribute"
with
> a value "SendOnly". Mostly I've seen it coming in Media Attribute.
>
> "Session Attribute (a): sendonly" Instead of "Media Attribute (a):
SendOnly".
>
> What's the difference?
>
> I've read some phone (PolyCom) while its set to a different settings, do
> this.
> For e.g
> voIpProt.SIP.useRFC2543hold     0 or 1  0
>
> When the phone is set to 0,  use SDP media direction parameters (such as
> a=sendonly) per RFC 3264 Otherwise use the obsolete c=0.0.0.0 RFC2543
> technique
>
> Could someone throw some light? Just trying to figure out the
difference?
>
> Cheers,
>
> Sylvester
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