[Serusers] npdi strip from uri

Please help. I have ndpi=yes in my uri and i need to get it stripped out. I have tried replace and it did nto work. Does anyone have any suggestions? Thanks. example: INVITE sip:3302471580;npdi=yes@xxx.xxx.xxx.xxx;user=phone SIP/2.0..Via: SIP/ 2.0/UDP xxx.xxx.xxx.xxx:5060;branch=z9hG4bK3accrq304g50udkp01s1.1sr..From: <sip:4432316574@xxx.xxx.xxx.xxx:5060;isup-oli=0;GX=GXDIDGOLD-dkdc1o22 11mf4>;pstn-params=808481808882;tag=SD5gi2b01-121..To: <sip:3302471580@xxx.xxx.xxx.xxx :5060>..Call-ID: SD5gi2b01-74753aacf8cebc27afa2abeba01ef67b-v3000 i1..CSeq: 31346 INVITE..Allow: OPTIONS, SUBSCRIBE, INVITE, CANCEL, ACK, PRA CK, INFO, REFER, NOTIFY, BYE..Accept: multipart/mixed, application/sdp, app lication/isup, application/dtmf, application/dtmf-relay..Contact: <sip:4432316574@xxx.xxx.xxx.xxx:5060;GX=GXAPTELADIDGOLD-dkdc1o2211mf4;transport=udp> ..Remote-Party-ID: <sip:4432316574@xxx.xxx.xxx.xxx:4000>;privacy=off..Content- Length: 161..Content-Disposition: session;handling=required..Content-Type: application/sdp..Max-Forwards: 70....v=0..o=Sonus_UAC 31345 16101 IN IP4 xxx.xxx.xxx.xxx. .s=SIP Media Capabilities..c=IN IP4 xxx.xxx.xxx.xxx..t=0 0..m =audio 50050 RTP/AVP 0..a=sendrecv..a=ptime:20..