I recently installed Asterisk FreePBX but all incoming calls terminate after one ring only.I am new to Asterisk and this is a prototype for testing before rolling out the actual installation.

I recently installed a prototype Asterisk FreePBX and incoming calls ring only once and disconnect. I am using X-Lite and PhonerLite soft phones.
My Asterisk FreePBX logfile looks like this
" [2017-02-15 14:44:45] VERBOSE[17088][C-00000001] pbx.c: – Executing [s@macro-dial-one:45] Dial("SIP/simba-00000001", "SIP/992002&SIP/2002,60,trIM(auto-blkvm)I") in new stack
[2017-02-15 14:44:45] WARNING[17088][C-00000001] app_dial.c: Unable to create channel of type 'SIP' (cause 20 - Subscriber absent)
[2017-02-15 14:44:45] VERBOSE[17088][C-00000001] netsock2.c: == Using SIP RTP TOS bits 184
[2017-02-15 14:44:45] VERBOSE[17088][C-00000001] netsock2.c: == Using SIP RTP CoS mark 5
[2017-02-15 14:44:45] VERBOSE[17088][C-00000001] app_dial.c: – Called SIP/2002
[2017-02-15 14:44:45] VERBOSE[17088][C-00000001] app_dial.c: – Connected line update to SIP/simba-00000001 prevented.
[2017-02-15 14:44:46] VERBOSE[17088][C-00000001] app_dial.c: – SIP/2002-00000002 is ringing
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] app_macro.c: == Spawn extension (macro-dial-one, s, 45) exited non-zero on 'SIP/simba-00000001' in macro 'dial-one'
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] app_macro.c: == Spawn extension (macro-simple-dial, s, 6) exited non-zero on 'SIP/simba-00000001' in macro 'simple-dial'
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: == Spawn extension (from-did-direct, 2002, 20) exited non-zero on 'SIP/simba-00000001'
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: – Executing [h@from-did-direct:1] Macro("SIP/simba-00000001", "hangupcall,") in new stack
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: – Executing [s@macro-hangupcall:1] ExecIf("SIP/simba-00000001", "0?Set(CDR(recordingfile)=.wav)") in new stack
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: – Executing [s@macro-hangupcall:2] GotoIf("SIP/simba-00000001", "1?theend") in new stack
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: – Goto (macro-hangupcall,s,4)
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: – Executing [s@macro-hangupcall:4] Hangup("SIP/simba-00000001", "") in new stack
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] app_macro.c: == Spawn extension (macro-hangupcall, s, 4) exited non-zero on 'SIP/simba-00000001' in macro 'hangupcall'
[2017-02-15 14:44:50] VERBOSE[17088][C-00000001] pbx.c: == Spawn extension (from-did-direct, h, 1) exited non-zero on 'SIP/simba-00000001'