[Serusers] Making SER to work with Cisco RADIUS

Hi, i'm pretty new to ser and I'd love to know has anybody came across making SER to work with Cisco ACS RADIUS server? So far I can see they talking to each other, but Cisco loggs an error : "Bad Request from NAS". I can see that username is passed to the RADIUS server but SER shows an error: 5(15475) receive_msg: cleaning up 5(15475) tcp_read_req: content-length= 0 5(15475) SIP Request: 5(15475) method: <REGISTER> 5(15475) uri: <sip:sip.fns.ru> 5(15475) version: <SIP/2.0> 5(15475) parse_headers: flags=1 5(15475) end of header reached, state=5 5(15475) parse_headers: Via found, flags=1 5(15475) parse_headers: this is the first via 5(15475) After parse_msg... 5(15475) preparing to run routing scripts... 5(15475) DEBUG : is_maxfwd_present: searching for max_forwards header 5(15475) parse_headers: flags=128 5(15475) DEBUG: is_maxfwd_present: value = 70 5(15475) parse_headers: flags=8 5(15475) DEBUG: add_param: tag=3de46d9fa4774112b66632d744e28ea5 5(15475) DEBUG: add_param: epid=442289156c 5(15475) end of header reached, state=29 5(15475) parse_headers: flags=256 5(15475) end of header reached, state=9 5(15475) DEBUG: get_hdr_field: <To> [25]; uri=[sip:222333@sip.fns.ru] 5(15475) DEBUG: to body [<sip:222333@sip.fns.ru> ] 5(15475) get_hdr_field: cseq <CSeq>: <2> <REGISTER> 5(15475) DEBUG: get_hdr_body : content_length=0 5(15475) found end of header 5(15475) find_first_route(): No Route headers found 5(15475) loose_route(): There is no Route HF 5(15475) check_self - checking if host==us: 10==13 && [sip.fns.ru] == [192.168.14.18] 5(15475) check_self - checking if port 5060 matches port 5060 5(15475) check_self - checking if host==us: 10==9 && [sip.fns.ru] == [127.0.0.1] 5(15475) check_self - checking if port 5060 matches port 5060 5(15475) check_nonce(): comparing [407f0b2e50ed56354282e03c50b13d45299cf105] and [407f0b2e50ed56354282e03c50b13d45299cf105] 5(15475) res: -2 5(15475) radius_authorize_sterman(): Failure 5(15475) build_auth_hf(): 'WWW-Authenticate: Digest realm="sip.fns.ru", nonce="407f0b2e50ed56354282e03c50b13d45299cf105" ' 5(15475) parse_headers: flags=-1 5(15475) check_via_address(192.168.14.20, 192.168.14.20, 0) 5(15475) tcp_send: tcp connection found (0x2832fde8), acquiring fd 6(15476) tcp_main_loop: read response= 2832fde8, 1 from 5 (15475) 5(15475) tcp_send, c= 0x2832fde8, n=8 5(15475) tcp_send: after receive_fd: c= 0x2832fde8 n=4 fd=16 5(15475) tcp_send: sending... 5(15475) tcp_send: after write: c= 0x2832fde8 n=638 fd=16 5(15475) tcp_send: buf= SIP/2.0 401 Unauthorized Via: SIP/2.0/TCP 192.168.14.20:13032 From: <sip:222333@sip.fns.ru>;tag=3de46d9fa4774112b66632d744e28ea5;epid=442289 156c To: <sip:222333@sip.fns.ru>;tag=ec4c46ea134bd13f46d10e4005923970.4590 Call-ID: 3b6cf7a1117541f38ed499a4b2c6b815(a)192.168.14.20 CSeq: 2 REGISTER WWW-Authenticate: Digest realm="sip.fns.ru", nonce="407f0b2e50ed56354282e03c50b13d45299cf105" Server: Sip EXpress router ACS Build(0.8.12 (i386/freebsd)) Content-Length: 0 Warning: 392 192.168.14.18:5060 "Noisy feedback tells: pid=15475 req_src_ip=192.168.14.20 req_src_port=2004 in_uri=sip:sip.fns.ru out_uri=sip:sip.fns.ru via_cnt==1" 5(15475) receive_msg: cleaning up 5(15475) tcp_read: EOF on 0x2832fde8, FD 12 5(15475) tcp_read_req: EOF 5(15475) releasing con 0x2832fde8, state -1, fd=12, id=1 5(15475) extra_data 0x0 6(15476) tcp_main_loop: reader response= 2832fde8, -1 from 0 6(15476) tcp_main_loop: destroying connection Any help will be greatly appreciated! Thanks, Ilya