....
Aug  1 11:40:53 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11364]: DEBUG: <core> [parser/sdp/sdp_helpr_funcs.c:565]: extract_mediaip(): located IP address [192.168.21.26] in `o=' field
Aug  1 11:40:53 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11364]: DEBUG: <core> [parser/sdp/sdp_helpr_funcs.c:565]: extract_mediaip(): located IP address [192.168.21.26] in `c=' field
Aug  1 11:40:53 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11364]: DEBUG: rtpproxy [rtpproxy_funcs.c:148]: check_content_type(): type <application/sdp> found valid
Aug  1 11:40:53 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11364]: DEBUG: rtpproxy [rtpproxy.c:2624]: force_rtp_proxy(): proxy reply: 45352 192.168.21.18#012
....
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp_helpr_funcs.c:565]: extract_mediaip(): located IP address [192.168.21.26] in `o=' field
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp_helpr_funcs.c:565]: extract_mediaip(): located IP address [192.168.21.26] in `c=' field
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxVersion:0#015#012a=T38MaxBitRate:14400#015#012a=T38FaxFillBitRemoval:0#015#012a=T38FaxTranscodingMMR:0#015#012a=T38FaxTranscodingJBIG:0#015#012a=T38FaxRateManagement:transferredTCF#015#012a=T38FaxMaxBuffer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC
:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38MaxBitRate:14400#015#012a=T38FaxFillBitRemoval:0#015#012a=T38FaxTranscodingMMR:0#015#012a=T38FaxTranscodingJBIG:0#015#012a=T38FaxRateManagement:transferredTCF#015#012a=T38FaxMaxBuffer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012
'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxFillBitRemoval:0#015#012a=T38FaxTranscodingMMR:0#015#012a=T38FaxTranscodingJBIG:0#015#012a=T38FaxRateManagement:transferredTCF#015#012a=T38FaxMaxBuffer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxTranscodingMMR:0#015#012a=T38FaxTranscodingJBIG:0#015#012a=T38FaxRateManagement:transferredTCF#015#012a=T38FaxMaxBuf
fer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxTranscodingJBIG:0#015#012a=T38FaxRateManagement:transferredTCF#015#012a=T38FaxMaxBuffer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxRateManagement:transferredTCF#015#012a=T38FaxMaxBuffer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxMaxBuffer:256#015#012a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxMaxDatagram:1500#015#012a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: <core> [parser/sdp/sdp.c:574]: parse_sdp_session(): ignoring unknown type in a= line: `a=T38FaxUdpEC:t38UDPRedundancy#015#012'
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: rtpproxy [rtpproxy_funcs.c:148]: check_content_type(): type <application/sdp> found valid
Aug  1 11:41:08 sipserver /usr/local/kamailio-4.0.2/sbin/kamailio[11362]: DEBUG: rtpproxy [rtpproxy.c:2624]: force_rtp_proxy(): proxy reply: 45352 192.168.21.18#012