[Freeswitch-users] INVALID_NUMBER_FORMAT error

Hi group, I am getting this error while generating outbound calls using freeswitch. *freeswitch@server> 2011-12-05 22:01:44.760933 [ERR] mod_sofia.c:4279 Invalid URL 2011-12-05 22:01:44.760933 [NOTICE] mod_sofia.c:4660 Close Channel N/A [CS_NEW] 2011-12-05 22:01:44.760933 [NOTICE] switch_ivr_originate.c:2459 Cannot create outgoing channel of type [sofia] cause: [INVALID_NUMBER_FORMAT] 2011-12-05 22:03:50.208776 [ERR] mod_sofia.c:4279 Invalid URL* Can anyone help me with this? -Dhairya