I had a system calling large number of extensions and all of a sudden it just stopped. I follow the call in the logfiles and this seems to be where the call dies. With more testing I see that over 36 extensions I see the dial argument takes format message and then the call dies.
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] pbx.c: Executing [s@macro-dial:31] ExecIf("SIP/wiresip1-000002be", "0?Set(ds=PJSIP/2010/sip:[email protected]:65060&Local/902010@zulu-call&PJSIP/2011/sip:[email protected]:65060&PJSIP/2009/sip:[email protected]:65060&Local/902009@zulu-call&PJSIP/2001/sip:[email protected]:65060&Local/902001@zulu-call&PJSIP/2003/sip:[email protected]:5060&Local/902003@zulu-call&PJSIP/2005/sip:[email protected]:65060&Local/902005@zulu-call&PJSIP/2004/sip:[email protected]:65060&Local/902004@zulu-call&PJSIP/2007/sip:[email protected]:5060&Local/902007@zulu-call&PJSIP/2006/sip:[email protected]:65060&Local/902006@zulu-call&PJSIP/2012/sip:[email protected]:65060&Local/902012@zulu-call&PJSIP/2013/sip:[email protected]:65060&Local/902013@zulu-call&Local/904010@zulu-call&PJSIP/4045/sip:[email protected]:65060&Local/904045@zulu-call&PJSIP/4027/sip:[email protected]:65060&Local/904027@zulu-call&Local/904167@zulu-call&PJSIP/4116/sip:[email protected]:65060&Local/904116@zulu-call&Local/904028@zulu-call&PJSIP/4008/sip:[email protected]:65060&Local/904008@zulu-call&PJSIP/4086/sip:[email protected]:65060&Local/904086@zulu-call&PJSIP/4108/sip:[email protected]:65060&Local/904108@zulu-call&PJSIP/4029/sip:[email protected]:65060&Local/904029@zulu-call&PJSIP/4021/sip:[email protected]:65060&Local/904021@zulu-call&PJSIP/4173/sip:[email protected]:65060&Local/904173@zulu-call&PJSIP/4022/sip:[email protected]:65060&Local/904022@zulu-call&PJSIP/4053/sip:[email protected]:65060&Local/904053@zulu-call&PJSIP/4478/sip:[email protected]:65060&Local/904478@zulu-call&PJSIP/4848/sip:[email protected]:65060&Local/904848@zulu-call&PJSIP/4148/sip:[email protected]:65060&PJSIP/4160/sip:[email protected]:65060&Local/904160@zulu-call&PJSIP/4087/sip:[email protected]:65060&PJSIP/4427/sip:[email protected]:65060&Local/904427@zulu-call&PJSIP/4473/sip:[email protected]:65060&Local/904473@zulu-call&PJSIP/4112/sip:[email protected]:65060&Local/904112@zulu-call&PJSIP/4124/sip:[email protected]:65060&Local/904124@zulu-call&PJSIP/4157/sip:[email protected]:65060&Local/904157@zulu-call&PJSIP/4049/sip:[email protected]:65060&Local/904049@zulu-call&PJSg)") in new stack
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] pbx.c: Executing [s@macro-dial:32] Dial("SIP/wiresip1-000002be", "PJSIP/2010/sip:[email protected]:65060&Local/902010@zulu-call&PJSIP/2011/sip:[email protected]:65060&PJSIP/2009/sip:[email protected]:65060&Local/902009@zulu-call&PJSIP/2001/sip:[email protected]:65060&Local/902001@zulu-call&PJSIP/2003/sip:[email protected]:5060&Local/902003@zulu-call&PJSIP/2005/sip:[email protected]:65060&Local/902005@zulu-call&PJSIP/2004/sip:[email protected]:65060&Local/902004@zulu-call&PJSIP/2007/sip:[email protected]:5060&Local/902007@zulu-call&PJSIP/2006/sip:[email protected]:65060&Local/902006@zulu-call&PJSIP/2012/sip:[email protected]:65060&Local/902012@zulu-call&PJSIP/2013/sip:[email protected]:65060&Local/902013@zulu-call&Local/904010@zulu-call&PJSIP/4045/sip:[email protected]:65060&Local/904045@zulu-call&PJSIP/4027/sip:[email protected]:65060&Local/904027@zulu-call&Local/904167@zulu-call&PJSIP/4116/sip:[email protected]:65060&Local/904116@zulu-call&Local/904028@zulu-call&PJSIP/4008/sip:[email protected]:65060&Local/904008@zulu-call&PJSIP/4086/sip:[email protected]:65060&Local/904086@zulu-call&PJSIP/4108/sip:[email protected]:65060&Local/904108@zulu-call&PJSIP/4029/sip:[email protected]:65060&Local/904029@zulu-call&PJSIP/4021/sip:[email protected]:65060&Local/904021@zulu-call&PJSIP/4173/sip:[email protected]:65060&Local/904173@zulu-call&PJSIP/4022/sip:[email protected]:65060&Local/904022@zulu-call&PJSIP/4053/sip:[email protected]:65060&Local/904053@zulu-call&PJSIP/4478/sip:[email protected]:65060&Local/904478@zulu-call&PJSIP/4848/sip:[email protected]:65060&Local/904848@zulu-call&PJSIP/4148/sip:[email protected]:65060&PJSIP/4160/sip:[email protected]:65060&Local/904160@zulu-call&PJSIP/4087/sip:[email protected]:65060&PJSIP/4427/sip:[email protected]:65060&Local/904427@zulu-call&PJSIP/4473/sip:[email protected]:65060&Local/904473@zulu-call&PJSIP/4112/sip:[email protected]:65060&Local/904112@zulu-call&PJSIP/4124/sip:[email protected]:65060&Local/904124@zulu-call&PJSIP/4157/sip:[email protected]:65060&Local/904157@zulu-call&PJSIP/4049/sip:[email protected]:65060&Local/904049@zulu-call&PJSb(func-apply-sipheaders^s^1),") in new stack
[2020-09-05 22:26:03] WARNING[8551][C-00000316] app_dial.c: Dial argument takes format (technology/resource)
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] app_macro.c: Spawn extension (macro-dial, s, 32) exited non-zero on 'SIP/wiresip1-000002be' in macro 'dial'
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] pbx.c: Spawn extension (ext-group, 528, 20) exited non-zero on 'SIP/wiresip1-000002be'
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] pbx.c: Executing [h@ext-group:1] Macro("SIP/wiresip1-000002be", "hangupcall,") in new stack
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] pbx.c: Executing [s@macro-hangupcall:1] GotoIf("SIP/wiresip1-000002be", "1?theend") in new stack
[2020-09-05 22:26:03] VERBOSE[8551][C-00000316] pbx_builtins.c: Goto (macro-hangupcall,s,3)