Hello guyz,
Need your help

I want my fs to behave like this

when call arrives for a number 1234656789 at fs i call a php file in which i check in the database that what should be the forwarding address of this number. for example the forwarding address is 123456789@1.1.1.1 then i return that forwarding address in bridge application in the end
i want to define some setting in sip profiles, user directory or wherever so when ever ip is 1.1.1.1 it set the codec on leg b to pcma
like it is defined in asterisk as
[1.1.1.1]
host=1.1.1.1
type=peer
disallow=all
allow=alaw


i want my sip profile to check if network address is 1.1.1.1, it uses a particular codec lets say pcma but if network address is 2.2.2.2 it uses the defult
and this i want to define for around 40 ip addresses