[page_dean]
exten => 20,1,Answer()
exten => 20,2,Dial(SIP/2020)
exten => 20,3,SendDTMF(70)
exten => 20,4,Flash()
exten => 20,5,Playback(/var/lib/asterisk/sounds/wg_prompts/dean_line_four)
exten => 20,6,Hangup()