[SR-Users] SER0.9.7: How to prevent: 403 Max Registrations per IP exceeded

[cerieljacobs]

Bluesip.net uses "Sip EXpress router (0.9.7 (i386/linux))"
and on client registration it returns
"SIP/2.0 403 Max Registrations per IP exceeded" 
due to some bug/error/failure in the version 1.4 Acrobits Business softphone user-agent 
to unregister correctly.

Strange is that this never happens with accounts on AG Projects, "OpenSIPS (1.4.5-notls (x86_64/linux))" server. This server software seems to remove old registrations for the same user-agent from the same ip address.

What should be changed in Sip EXpress router, 
to store only one single registration per user-agent/IP combination?

Thanks,Ceriel