flow control of payment agents or browsers

Hi.
let me ask somethings.

do we have discussed flow control of payment agents or browsers?

with the current architecture of payments agent,
multiple entities will be involved with payment agent.

who initiate or control the flow of payment agent?

does we only focus three channels?

just question!

regards
mountie

-- 
Mountie Lee

PayGate
CTO, CISSP
Tel : +82 2 2140 2700
E-Mail : mountie@paygate.net