[OpenSIPS-Users] does opensips work with public sipserver?

[fabio di gennaro]

hi everyone,
my scenario is:
sip clientA on sip server local (opensips 1.8)
sip clientB on sip server public

my requirements:
1. client A calls client B
2. client B calls client A
I'm thinking of using uac module of opensips to connect on sip server public. 
Is the uac module right for this purpose? Also are there different ways to do 
the same?

kind regards