[Serusers] How does UA1 knows another UA2 at another SER sip server?

[Charles Wang]

Dear ALL:

Question:
How can UA1 know UA2 under SER2 if UA1 registers to SER1 sip
server(domainA.com)
and another UA2 registers to SER2 sip server(domainB.com) ?

UA1 ==> SER1(domainA.com) <== ?? ==> SER2(domainB.com) ==> UA2

Is there any middleware like freeradius or mysql to let UA1 know the
location of UA2 ?


Thank you for your kind to answer my question.

Best Regard.

Charles