Autodestruct on dialog , what is this ?

[macaruchi]

Hi!
From yesterday I am experimenting a weird error in my asterisk and really I dont know where start

[May 16 17:06:07] WARNING[1551] chan_sip.c: Autodestruct on dialog '2a0db13c30b32adf08937c8465ea7490@x.x.x.x:5060' with owner SIP/Switch2Voip-00013ab3 in place (Method: BYE). Rescheduling destruction for 10000 ms
[May 16 17:06:07] WARNING[1551] chan_sip.c: Autodestruct on dialog '7248308652b3eaeb5aa5a3357b41cf05@x.x.x.x:5060' with owner SIP/Switch2Voip-00013a6c in place (Method: BYE). Rescheduling destruction for 10000 ms
[May 16 17:06:07] WARNING[1551] chan_sip.c: Autodestruct on dialog '2af74d52096b4abd34d78c1214346191@x.x.x.x:5060' with owner SIP/Switch2Voip-00013b0a in place (Method: INVITE). Rescheduling destruction for 10000 ms
[May 16 17:06:07] WARNING[1551] chan_sip.c: Autodestruct on dialog '5d7bdabb0871a2b85e231fc1544feace@x.x.x.x:5060' with owner SIP/Switch2Voip-00013ab1 in place (Method: INVITE). Rescheduling destruction for 10000 ms
[May 16 17:06:07] WARNING[1551] chan_sip.c: Autodestruct on dialog '06bcaaa327fb0e3f67640ec11e514319@x.x.x.x:5060' with owner SIP/Switch2Voip-00013ab9 in place (Method: INVITE). Rescheduling destruction for 10000 ms

Any cluees?
ViciBox
VERSION: 2.14-605a
BUILD: 170327-1655
Linux vicibox7 4.1.36-44-default #1 SMP PREEMPT Mon Dec 12 21:24:10 UTC 2016 (b1c0ac2) x86_64 x86_64 x86_64 GNU/Linux