Dear all,
Sorry for continuing this topic on this mailing list, but I would like to
confirm one point, which may relate to SIP protocol development.
I understand that SIP over transport protocols using IP has no limit, thanks
to the IP fragmentation function.
So, SIP has no need to worry about message length if it uses IP based
transport protocols, but should use TCP if it wants to send longer message
than the path MTU.
I also understand that supporting IP fragmentation is implementation issue.
On the other hand, SIP cannot send too long message over a transport
protocol that has no fragmentation function, such as MTP or signalling AAL.
However, nobody except me considers that SIP uses such transport protocol at
this stage, and therefore, this is not a problem. In other word, it is only
a future possible problem.
If we will use such transport protocols, SIP will have to care about message
length and specify something (handling of over length message, or message
segmentation procedures in SIP level).
Is my understanding correct?
Regards,
Takumi Ohba
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Takumi OHBA
NTT Network Service Systems Laboratories
tel +81 422 59 4405 fax +81 422 59 3494
e-mail [EMAIL PROTECTED]
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