[ Context 'default' created by 'pbx_config' ]
  '_*77XXXXXXXXXXX' => 1. macro(dial-sylantro|${EXTEN:3})            [pbx_config]

[ Context 'macro-dial-sylantro' created by 'pbx_config' ]
  's' =>            1. Dial(SIP/${ARG1}@sylantro)                 [pbx_config]
                    2. Hangup()                                   [pbx_config]