[SIP] Max no of non-invite pending transaction within a dialog

Hi,

1. Only one INVITE request may be pending within a dialog.  Else, 491 will 
be sent.
2. Only one non-INVITE request may be pending within a dialog (in one 
direction): it is not possible to send UPDATE if no final response has been 
received to PRACK.

Pl clarify whether the above points are right. Esp, the second point.

Thanks
Mohammed 


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