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 SIP FAQ : SIP Functionality :
How does SIP support text chat and instant messaging? |
| Text chat can be supported as part of SIP sessions using the RTP text conversation payload format (RFC 2793). Typically, text is sent one character at a time, although almost any number of characters can be packed into a single RTP packet. Instant messaging (IM) differs from text chat in that: - messages are sent as a whole and can be in any format, such as HTML; - messages are independent of a session setup; - store-and-forward or translation to email are feasible;
SIP can support IM through the use of the proposed MESSAGE method.
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| [Append to This Answer] | |
| hgs@cs.columbia.edu | |
| 2000-Aug-21 11:18am |
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