[Users] Insert name into from header of SIP messages

We are storing cnam (callerid name) values in a mysql database for use with openser. I have openser pulling the values from the database using avpops but I need to know how to insert the value into the from so that it will be passed to my sip user agents. Related code posed below modparam ("avpops","db_scheme","cnam_scheme:username_col=phonenumber;table=cnam_c ache;value_col=cnam;value_type=string") modparam("avpops", "avp_aliases", "cnam=s:cnam") avp_db_load("$from/cnam_scheme","cnam/$cnam_scheme"); #sample query -- select cnam from cnam_cache where phonenumber='13143212222' this should now store that value in $cnam. now how do I put that value for example "John Smith" in the from portion of sip messaging so that it displays on the users sip phone, or phone attached to an ata?