Hi, I want my FS to entertain only those calls which are coming from a specific IP address . For this, I have defined a profile in vars.xml as <X-PRE-PROCESS cmd="set" data="profile_00=192.168.4.10"/>. & another line in public.xml as <extension name="transfer_to_context_01"> <condition field="${sip_from_host}" expression="$${profile_00}"> <action application="transfer" data="${destination_number} XML sharad"/> </condition> </extension> As per my understanding, if call is coming from 192.168.4.10, that call should be processed as per the context `sharad'.....correct ? Yes, it works like this. Upto here all is ok. But if the call is coming from 192.168.100 - 192.168.4.109, these calls also are processed as per context `sharad'. Means entire IP is not matched by condition field. Is there any solution for this. Requesting all of you to help me in this regard. Regards Sharad