Is there a way to define a listen-only (monitor only) IAX extension in extensions.conf? I provide VOX extensions for IAX (Zoiper, etc.) users. This works: exten => 1234,1,answer() exten => 1234,n,Wait(1) exten => 1234,n,Playback(rpt/connected) exten => 1234,n,rpt(1000|Pv) For listen-only, maybe use the S “Simplex dumb phone control mode” and find a way to disable the * and # DTMF commands for transmit? Glancing at app_rpt.c source code, I don’t see an obvious option for a listen-only extension: " Not specifying an option puts it in normal endpoint mode (where source\n" " IP and nodename are verified).\n" " Options are as follows:\n" " X - Normal endpoint mode WITHOUT security check. Only specify\n" " this if you have checked security already (like with an IAX2\n" " user/password or something).\n" " Rannounce-string[|timeout[|timeout-destination]] - Amateur Radio\n" " Reverse Autopatch. Caller is put on hold, and announcement (as\n" " specified by the 'announce-string') is played on radio system.\n" " Users of radio system can access autopatch, dial specified\n" " code, and pick up call. Announce-string is list of names of\n" " recordings, or \"PARKED\" to substitute code for un-parking,\n" " or \"NODE\" to substitute node number.\n" " P - Phone Control mode. This allows a regular phone user to have\n" " full control and audio access to the radio system. For the\n" " user to have DTMF control, the 'phone_functions' parameter\n" " must be specified for the node in 'rpt.conf'. An additional\n" " function (cop,6) must be listed so that PTT control is available.\n" " D - Dumb Phone Control mode. This allows a regular phone user to\n" " have full control and audio access to the radio system. In this\n" " mode, the PTT is activated for the entire length of the call.\n" " For the user to have DTMF control (not generally recomended in\n" " this mode), the 'dphone_functions' parameter must be specified\n" " for the node in 'rpt.conf'. Otherwise no DTMF control will be\n" " available to the phone user.\n" " S - Simplex Dumb Phone Control mode. This allows a regular phone user\n" " audio-only access to the radio system. In this mode, the\n" " transmitter is toggled on and off when the phone user presses the\n" " funcchar (*) key on the telephone set. In addition, the transmitter\n" " will turn off if the endchar (#) key is pressed. When a user first\n" " calls in, the transmitter will be off, and the user can listen for\n" " radio traffic. When the user wants to transmit, they press the *\n" " key, start talking, then press the * key again or the # key to turn\n" " the transmitter off. No other functions can be executed by the\n" " user on the phone when this mode is selected. Note: If your\n" " radio system is full-duplex, we recommend using either P or D\n" " modes as they provide more flexibility.\n" " V - Set Asterisk channel variable for specified node ( e.g. rpt(2000|V|foo=bar) ).\n" " q - Query Status. Sets channel variables and returns + 101 in plan.\n" " M - Memory Channel Steer as MXX where XX is the memory channel number.\n" " * - Alt Macro to execute (e.g. *7 for status)\n"