[SR-Users] 'UDP' is not a valid transport

hi all, I am using Twinkle on fedora 11 as a client. it connected to the server fine but after some time it started giving on register as well as de-register. [Jun 18 15:15:14] ERROR[14964]: chan_sip.c:12215 register_verify: 'UDP' is not a valid transport for '70003'. we only use 'UNKNOWN'! ending call. [Jun 18 15:15:14] NOTICE[14964]: chan_sip.c:20561 handle_request_register: Registration from '"70003" <sip:70003@a.a.a.a>' failed for 'x.x.x.x' - Device not configured to use this transport type what could be the reason and the solution? regards Siddharth ***********************Confidentiality Notice*************************** The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain confidential or privileged information. If you are not the intended recipient, please notify the sender at Divinet or info(a)divinetaccess.com immediately and destroy all copies of this message and any attachments. Please print this message only if extremely necessary. Plant a tree today. Save the EARTH. ************************************************************************