Long Tone in IPO

[Joledur]

In 2 days I'll remove a Norstar to be change for an IPO. There is actually on this site a gate controlled by a Viking device. When someone come at the gate, he take the phone and the viking call the receptionist on the Norstar via an analog line, then he can speak with her and the receptionist can open the door by pressing long tone key (F808) followed by 9. How can i reproduce F808 on an IPO to be sure that the 9 will be heard by the Viking?

THX

 

[tlpeter]

It will be recognized by the doorphone.
It is just a DTMF tone and that does not need a button to be activated.


BAZINGA!

I'm not insane, my mother had me tested!