Manipulating service-type

[Manuel García Cabrera]

Hi, I need to be able to set the service-type for outgoing messages and 
to be able to get it on incoming messages.

I've seen that it is possible to set it with a variable on the "group = 
smsc" configuration, but that would globally affect every message I 
send. I need to make it variable on my application side: every SMS I 
send could have any service-type. Is that even possible without having 
multiple "group = smsc" configurations?

And what about incoming messages? How can I know which service-type was 
used? Does it have to be a static configuration?