Hi Mark, Thanks for the link to Tom’s webpage and your examples, I now think I have a better understanding. in the extensions.conf I used: exten=1001,n,Rpt,1001|P (change 1001 to my node number). When I changed it to: exten=1001,n,Rpt,1001|Pv the mute works as PTT because it now works in VOX mode. I did not know what the v after the last P was for until I read the ACID System Administrators Guide. PTT operation is a little crude, but it works. No need to enter *99 to transmit or # to switch to receive. I doing this for a ham friend the has an iphone so I need an app that works on iphone. I have an android phone and prefer Android IAXRPT that has a PTT toggle button, but there is no such application that has a PTT button that works on Allstar that I know of for the iphone. I believe the Echolink app for iphone has a PTT button, but we want to use Allstar. Thanks again, Steve_WB8GRS From: Mark Johnston Sent: Saturday, April 30, 2016 9:06 PM To: Mike - W5JR Cc: ssedgwick ; app_rpt-users@ohnosec.org Subject: Re: [App_rpt-users] Zoiper not Transmitting in extensions.conf: I use this - exten=1001,1,Answer exten=1001,n,Playback,rpt/node exten=1001,n,Rpt,1001|Pv 1001 being replaced with your node # A handy reference - unfortunately no page numbers - http://k5tra.net/TechFiles/acid-sysadmin.pdf Just search for the term(s)