Thank you all for your feed back, I got it working. It was a setting on the ht503. I had to create misc application on asterisk that would create a dialable number for the ivr (in this case I used 7777 as the number). On config for ht503 under “basic settings” all the way at the bottom there is a section called “unconditional call forward to VOIP”. The user id was empty so I typed in 7777 and applied the settings and everything works now!