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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello All,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am a newbie to FreeSWITCH, please excuse if this question has already been answered.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My requirement is as follows:<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>When an incoming call is received, it needs to be bridged to one of the 4 available destination lines<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Minimal management of these lines is required: need to keep track of when each line was used, so that, when a new incoming call is received, I can use the oldest used available line to bridge the call to <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In order to achieve this, I have:<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Defined a few global variables in vars.xml, which would keep track of each line’s status (available/busy) and last used timestamp<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Implemented a Lua script which ‘chooses’ the line based on global variables status and timestamp (using "global_getvar") and update the status of the line to be used (using "global_setvar")<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Bridge to the line returned by the script<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Execute another Lua script on hang-up, which updates the global variables<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am now wondering if I would run into issues in cases where I receive concurrent calls (I am using a Sangoma E1 card, and will receive multiple concurrent calls soon)? Would I need to be applying some kind of explicit mutex protection in these scripts for the global variables? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>With regards,<o:p></o:p></p><p class=MsoNormal>Sirish<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>