Extension "Dual SIP Registration" Problem!

Hi Everyone!

I have the following problem, dual registration:

-- Registered SIP '220' at 208.54.37.168 port 18862 expires 3600
-- Saved useragent "SIPAUA/0.1.001" for peer 219
-- Registered SIP '220' at 24.110.67.232 port 5060 expires 120
-- Saved useragent "MxSipApp/5.0.29.240 " for peer 219

Any tips to restrict or prevent? as per extension “useragent” restriction using freepbx or .conf files modification?

Any Warning Script?

Anything can help me?

Thanks in advance.

Franz