[event handler] onserviceadded [event type] ServiceChangeEvent [short description] handle new messaging services [event name] 
serviceadded
r e c e i v e d
s e n t
d e l i v e r y s u c c e s s
d e l i v e r y e r r o r
r e a d s u c c e s s
r e a d e r r o r
s e r v i c e a d d e d
s e r v i c e r e m o v e d