http://developers.sun.com/techtopics/mobility/midp/ttips/platformRequest/index.html
PlatformRequest is a non blocking method.
You can do a miss call by hang down the call on the called phone.
CALLER: make a platformRequest
CALLER: enter in sleep mode (Thread.sleep(xxxxxx))
CALLED: hang down the caller
CALLER: after sleep make a resumeRequest.
is the only way. the limit is that the called phone "must" close the call without answering
Sorry for my bad English!
I try to explain..
For hang down I want to say
disconnect a call without answering (without any billing).
refuse the call by the called.
Is the only way to make a miss call because when you make a platform request in j2me delegate the system to make call then the call is out of j2me code control
Documentation is here:
http://jcp.org/en/jsr/detail?id=253
Package:
You can't download packages because the implementation must be present in the phone when you buy it. You can't install a new jsr in the phone(is possible only if a vendor distribuite a new firmware version with that jsr implementation).
Phone that support jsr 253:
I don't find.