[SIPForum-discussion] maxptime for media description

[Nitin Kapoor]

Hello,

"Maxptime" is the maximum amount of media which can be encapsulated in
a payload packet, expressed as time in milliseconds. The time is
calculated as the sum of the
time the media present in the packet represents.  The time SHOULD be a
multiple of the frame size. If this parameter is not present, the
sender MAY
encapsulate any number of speech frames into one RTP packet.

Thanks,
Nitin Kapoor



2010/1/15 <lbq100 at gmail.com>

> hello everyone,
>
> I am puzzled about the relationship between this two attributions and the
> codec formats in a media description.
>
> when we send an offer , we may give a codelist for one type of meida. but
> maxtime just have one. If the formats in the list have different ptime (i.e
> EVRC is 20, G729 is 10) , what the meaning of mazptime?
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