Ok,this is now the asterisk's log:
[Apr 7 11:32:42] == Manager 'sendcron' logged on from 127.0.0.1
[Apr 7 11:32:42] -- Executing [91076641024@default:1] AGI("Local/91076641024@default-00000027;2", "agi://127.0.0.1:4577/call_log") in new stack
[Apr 7 11:32:42] -- AGI Script Executing Application: (EXEC) Options: (Set(_CAMPCUST=ARIANO))
[Apr 7 11:32:42] -- <Local/91076641024@default-00000027;2>AGI Script
agi://127.0.0.1:4577/call_log completed, returning 0
[Apr 7 11:32:42] -- Executing [91076641024@default:2] Dial("Local/91076641024@default-00000027;2", "SIP/vohippo1076641024,,To") in new stack
[Apr 7 11:32:42] == Using SIP RTP CoS mark 5
[Apr 7 11:32:42] ERROR[6808][C-00000048]: netsock2.c:271 ast_sockaddr_resolve: getaddrinfo("vohippo1076641024", "(null)", ...): Name or service not known
[Apr 7 11:32:42] WARNING[6808][C-00000048]: chan_sip.c:6108 create_addr: No such host: vohippo1076641024
[Apr 7 11:32:42] WARNING[6808][C-00000048]: app_dial.c:2455 dial_exec_full: Unable to create channel of type 'SIP' (cause 20 - Subscriber absent)
[Apr 7 11:32:42] == Everyone is busy/congested at this time (1:0/0/1)
[Apr 7 11:32:42] -- Executing [91076641024@default:3] Hangup("Local/91076641024@default-00000027;2", "") in new stack
[Apr 7 11:32:42] == Spawn extension (default, 91076641024, 3) exited non-zero on 'Local/91076641024@default-00000027;2'
[Apr 7 11:32:42] -- Executing [h@default:1] AGI("Local/91076641024@default-00000027;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----20-----CHANUNAVAIL----------") in new stack
[Apr 7 11:32:43] -- <Local/91066589760@default-00000024;2>AGI Script
agi://127.0.0.1:4577/call_log--HVcauses ... ---------- completed, returning 0
[Apr 7 11:32:43] -- <Local/910771523056@default-00000025;2>AGI Script
agi://127.0.0.1:4577/call_log--HVcauses ... ---------- completed, returning 0
[Apr 7 11:32:43] -- <Local/910761507327@default-00000026;2>AGI Script
agi://127.0.0.1:4577/call_log--HVcauses ... ---------- completed, returning 0
[Apr 7 11:32:43] -- <Local/91076641024@default-00000027;2>AGI Script
agi://127.0.0.1:4577/call_log--HVcauses ... ---------- completed, returning 0