Yes, you can! Please follow the instructions below:

* * * (wait for beep)     

* 9 * 1 * * 200 * number1 * number2 * *  (wait for beep)   

* 5 * 1 * 0030 * *  (wait for beep -- adds 3 second delay between number1 and number2)  
* * 235 * (wait for beep)
* * 27 * * (waif for beep -- allows loud dialing tone, optional)
Hangup