[asterisk-bugs] [JIRA] (ASTERISK-16115) [patch] problem with ringinuse=no, queue members receive sometimes two calls

Fri Nov 6 09:37:35 CST 2015

    [ https://issues.asterisk.org/jira/browse/ASTERISK-16115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=228189#comment-228189 ] 

Chet Stevens commented on ASTERISK-16115:
-----------------------------------------

We have agents who belong to several queues and they receive many calls. They were constantly receiving 2-4 calls simultaneously. As a workaround we had to add some additional dialplan in before ringing the agents to count the calls then indicate Congestion on the additional calls. The call will just stay in the queue in this case. The context that we use for calls that are being sent to the agents is below. We are currently using GLOBAL variables but had previously been using the Asterisk database to track the calls. I've included the commented lines for the database tracking. The feeling was that GLOBALS would be able to update fast enough to keep up with the flood of calls.

This does "fix" the problem as far as the agents are concerned but reports will show a lot more unanswered calls by the agents as a result of the Congestion.

{noformat}
[agents]
exten => _X.,1,NoOp()
same => n,Set(__agent=${EXTEN})
same => n,Set(GLOBAL(calls_${agent})=${IF($[${ISNULL(${GLOBAL(calls_${agent})})}]?0:${GLOBAL(calls_${agent})})})
same => n,Set(GLOBAL(calls_${agent})=${IF($[${GLOBAL(calls_${agent})} < 0]?0:${GLOBAL(calls_${agent})})})
same => n,Set(GLOBAL(calls_${agent})=$[${GLOBAL(calls_${agent})} + 1])
;same => n,Set(DB(calls/${agent})=${IF($[${DB_EXISTS(calls/${agent})}]?${DB(calls/${agent})}:0)})
;same => n,Set(DB(calls/${agent})=${IF($[${DB(calls/${agent})} <= 0]?1:$[${DB(calls/${agent})} + 1])})
same => n,GotoIf($[${GLOBAL(calls_${agent})} <= 1]?continue)
;same => n,GotoIf($[${DB(calls/${agent})} <= 1]?continue)
same => n,NoOp(CALLS: ${GLOBAL(calls_${agent})}. AGENT PJSIP/${EXTEN}_line IS ${DEVICE_STATE(PJSIP/${EXTEN}_line)}. ${caller_number} from ${queue}. CONGESTION!)
same => n,Congestion()
same => n(continue),NoOp(CALLS: ${GLOBAL(calls_${agent})}. AGENT PJSIP/${EXTEN}_line IS ${DEVICE_STATE(PJSIP/${EXTEN}_line)}. ${caller_number} from ${queue}. SENDING.)
same => n,Set(__TRANSFER_CONTEXT=agent_transfer)
same => n,Set(CALLERID(num)=${caller_number})
same => n,Set(CALLERID(name)=${caller_name})
same => n,Dial(PJSIP/${EXTEN}_line,,A(${queue_file}))
same => n,Hangup()

exten => h,1,NoOp()
same => n,Set(GLOBAL(calls_${agent})=$[${GLOBAL(calls_${agent})} - 1])
same => n,NoOp(   CALLS: ${GLOBAL(calls_${agent})}. AGENT PJSIP/${agent}_line. ${DIALSTATUS})
;same => n,Set(DB(calls/${agent})=$[${DB(calls/${agent})} - 1])
{noformat}

We also zero out the count when the agent logs out to avoid any situations where new calls won't reach the agent because the system left the variable at something greater than 0.

{noformat}
same => n,Set(GLOBAL(calls_${agent_number})=0)
{noformat}

> [patch] problem with ringinuse=no, queue members receive sometimes two calls
> ----------------------------------------------------------------------------
>
>                 Key: ASTERISK-16115
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-16115
>             Project: Asterisk
>          Issue Type: Bug
>          Components: Applications/app_queue
>            Reporter: nik600
>            Assignee: Bradley Watkins
>         Attachments: app_queue.c-1.6.2.10.patch, app_queue.c.patch, app_queue.c-svn-r368404.patch, app_queue.c-svn-r370418.patch, app_queue.c-svn-r375015.patch, debug.filtered.gz, debug_.txt, jira_asterisk_16115_revert_r370418_v1.8.patch, jira_asterisk_16115_single_q_v1.8.patch
>
>
> Dear all
> on a debian amd64 i've installed (from source) asterisk 1.4.31
> On the system we have in average 50 concurrent calls in queue and 40
> sip members.
> I'm experiencing an apparently random problem:
> sometimes some users receive 2 calls from asterisk, apparently
> ignoring the ringinuse=no settings.
> It appears on users that are members of many queues
> As you can see from the log, the user goes in a status Ring+Inuse.
> Any idea?
> Why the call is still dispatched to the user if it is not in the "Not
> in use" status?
> i've added some customized log in the ring_entry function and this is the result:
> {noformat}
> [May 18 14:13:04] DEBUG[24945] app_queue.c: KUMBELOG: queue=queue_1        count=1,membercount=13,ringinuse=0,device=SIP/PL1009,status=1
> [May 18 14:13:04] DEBUG[24945] app_queue.c: Found matching member SIP/PL1009 in queue 'queue_2'
> [May 18 14:13:04] VERBOSE[24945] logger.c:     -- Called SIP/PL1009
> [May 18 14:13:05] VERBOSE[24945] logger.c:     -- SIP/PL1009-00001807 is ringing
> [May 18 14:13:06] DEBUG[25098] app_queue.c: KUMBELOG: queue=queue_2        count=2,membercount=15,ringinuse=0,device=SIP/PL1009,status=1
> [May 18 14:13:06] DEBUG[25098] app_queue.c: Found matching member SIP/PL1009 in queue 'queue_1'
> [May 18 14:13:06] DEBUG[25098] app_queue.c: Found matching member SIP/PL1009 in queue 'queue_3'
> [May 18 14:13:06] VERBOSE[25098] logger.c:     -- Called SIP/PL1009
> [May 18 14:13:07] VERBOSE[25098] logger.c:     -- SIP/PL1009-00001808 is ringing
> [May 18 14:13:07] DEBUG[25312] app_queue.c: KUMBELOG: queue=queue_3        count=1,membercount=18,ringinuse=0,device=SIP/PL1009,status=6
> [May 18 14:13:08] DEBUG[25382] app_queue.c: KUMBELOG: queue=queue_4        count=1,membercount=18,ringinuse=0,device=SIP/PL1009,status=6
> [May 18 14:13:08] DEBUG[25224] app_queue.c: KUMBELOG: queue=queue_2        count=2,membercount=15,ringinuse=0,device=SIP/PL1009,status=6
> [May 18 14:13:12] VERBOSE[25098] logger.c:     -- SIP/PL1009-00001808 answered SIP/192.168.55.32-000017e6
> [May 18 14:13:13] VERBOSE[25098] logger.c:     -- Native bridging SIP/192.168.55.32-000017e6 and SIP/PL1009-00001808
> [May 18 14:13:14] DEBUG[25224] app_queue.c: KUMBELOG: queue=queue_2        count=1,membercount=15,ringinuse=0,device=SIP/PL1009,status=7
> {noformat}
> It seems that the system does not change the status of the user after calling it, and then re-schedule a new call.
> After that the status is updated and goes in a ring+inuse status (7)
> Do you have any idea about what can cause that?
> This is an example of my config
> {noformat}
> [PL1009]
> context=mycontext
> callerid=PhoneLine1009 <1009>
> secret=pwd1009
> type=peer
> host=dynamic
> call-limit=3
> disallow=all
> allow=ulaw
> queues:
> [queue_1]
> weight=10
> wrapuptime=0
> strategy=leastrecent
> joinempty=no
> retry=0
> autopause=yes
> setinterfacevar=yes
> eventwhencalled=yes
> eventmemberstatus=yes
> ringinuse=no
> member => SIP/PL1009
> [queue_2]
> weight=10
> wrapuptime=0
> strategy=leastrecent
> joinempty=no
> retry=0
> autopause=yes
> setinterfacevar=yes
> eventwhencalled=yes
> eventmemberstatus=yes
> ringinuse=no
> member => SIP/PL1009
> [queue_3]
> weight=10
> wrapuptime=0
> strategy=leastrecent
> joinempty=no
> retry=0
> autopause=yes
> setinterfacevar=yes
> eventwhencalled=yes
> eventmemberstatus=yes
> ringinuse=no
> member => SIP/PL1009
> {noformat}
> ****** ADDITIONAL INFORMATION ******
> I've tried:
> 1.4.31
> 1.4.30
> run the system using ESXi on DL380
> run the system using ESXi on HP Blade
> run the system directly on hardware without virtualization
> used slackware 13.0 instead of debian AMD 64
> changed the kernel hertz to 1000 instead of 250
> added dahdi to optimize timing
> On client-side, i've tested
> Sjphone on windows
> CISCO 7940 phone
> in all these test-case i had the problem, and it occurs with a frequency of 100 times each 4000 calls.

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