Add context Incoming call single extension

For internal extension 1001 I want to send an http request on incoming call.
How can I make it?

dialplan show pauseradio
[ Context ‘pauseradio’ created by ‘pbx_config’ ]
’_4444’ => 1. NoOp(${CALLERID} ${DATETIME}) [pbx_config]
2. System(“curl http://myradio/pause.html”) [pbx_config]

this dialplan make the work, but is activated by a call to 4444, how can I make it for incoming call to my extension?

thanks in advance

Create a Follow Me for extension 1001 and add 4444# to the list of extensions that ring when 1001 is dialled. The # suffix is necessary, read the help for that field to see why.

Not 100% sure it is necessary, but you might consider adding a hangup command after the curl in your [pauseradio] context.