quand j'appelle

voici les logs,

[2015-01-28 15:03:55] WARNING[4474]: res_pjsip_pubsub.c:2858 pubsub_on_rx_publish_request: No registered publish handler for event presence
[2015-01-28 15:03:55] WARNING[4474]: res_pjsip_pubsub.c:608 subscription_get_handler_from_rdata: No registered subscribe handler for event presence.winfo
[2015-01-28 15:04:03] WARNING[4910][C-00000007]: channel.c:4816 ast_prod: Prodding channel 'PJSIP/1000-00000002' failed
[2015-01-28 15:04:03] WARNING[1871]: res_pjsip_pubsub.c:2858 pubsub_on_rx_publish_request: No registered publish handler for event presence
[2015-01-28 15:04:03] WARNING[1871]: res_pjsip_pubsub.c:608 subscription_get_handler_from_rdata: No registered subscribe handler for event presence.winfo