[hylafax-users] Procedural interrupt/operator intervention

[Steve Underwood <steveu@xxxxxxxxxxx>]

 Hi,

I have never fully implemented the operator interrupt features of T.30 
(PRI-MPS, PRI-EOM, PRI-EOP, PIP and PIN) in my FAX software, as I was 
never sure what is supposed to happen, and they are rarely used. Now I 
am seeing PRI-EOP messages in logs from a user, and I think its time I 
filled in the gaps in my support.

Appendix IV shows, message by message, what is supposed to happen if 
operators actually respond to a procedural interrupt request. My issue 
is what should happen when there is no operator to respond. Can I 
respond with MCF when I receive a PRI-EOP, just like I do when I receive 
an EOP? Can I treat a received PIP just like an MCF, and carry on with 
the next thing I would like to exchange? The flow charts don't seem to 
make this clear, unless I have missed some key notes.

Appendix II seems to imply that MCF is an appropriate response to 
PRI-EOP or EOP, but that table seems informational in nature, and not 
definitive.

I would appreciate any input people can give me.

Steve


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