Incoming Call rings then stop ringing and back again

Asterisk Asterisk Support
1

Hi
Need help , all of a sudden incoming PSTN calls through Dlink 6004S , goes to the identified ringing group , it rings three rings , then silent , then after couple of seconds rings again. Here is the log file of a call hope someone can help

– SIP/9020-00002b87 connected line has changed. Saving it until answer for SIP/704-00002b86
– SIP/9030-00002b88 connected line has changed. Saving it until answer for SIP/704-00002b86
– SIP/9030-00002b88 is ringing
– SIP/9020-00002b87 is ringing

== Spawn extension (macro-dial, s, 7) exited non-zero on ‘SIP/704-00002b86’ in macro ‘dial’
== Extension Changed 704[ext-local] new state Idle for Notify User 9020
== Spawn extension (Managers, 60, 14) exited non-zero on ‘SIP/704-00002b86’
== Extension Changed 704[ext-local] new state Idle for Notify User 9030
– Executing [h@Managers:1] Macro(“SIP/704-00002b86”, “hangupcall,”) in new stack
– Executing [s@macro-hangupcall:1] GotoIf(“SIP/704-00002b86”, “1?skiprg”) in new stack
– Goto (macro-hangupcall,s,4)
– Executing [s@macro-hangupcall:4] GotoIf(“SIP/704-00002b86”, “0?skipblkvm”) in new stack
– Executing [s@macro-hangupcall:5] NoOp(“SIP/704-00002b86”, “Cleaning Up Block VM Flag: BLKVM/60/SIP/704-00002b86”) in new stack
– Executing [s@macro-hangupcall:6] NoOp(“SIP/704-00002b86”, “Deleting: BLKVM/60/SIP/704-00002b86 TRUE”) in new stack
– Executing [s@macro-hangupcall:7] GotoIf(“SIP/704-00002b86”, “1?theend”) in new stack
– Goto (macro-hangupcall,s,9)
– Executing [s@macro-hangupcall:9] Hangup(“SIP/704-00002b86”, “”) in new stack
== Spawn extension (macro-hangupcall, s, 9) exited non-zero on ‘SIP/704-00002b86’ in macro ‘hangupcall’
== Spawn extension (Managers, h, 1) exited non-zero on ‘SIP/704-00002b86’
== Using SIP RTP TOS bits 184
== Using SIP RTP CoS mark 5

2

That is not a log file of the call. It might be a very small part of the call.

I suspect this is a FreePBX system, as Asterisk has no concept of a ring group, only ringall queues, and & operators in dial strings… FreePBX is not supported here.