Voice notification alarms to a PA system

I have been able to successfully setup Ignition to call my phone during an alarm condition. I want to call the PA system to give a plantwide announcements for specific alarms. Our IT team who setup the VOIP host said we should be able to reach internal extensions including our PA system.

When I am onsite I can call extension 555, then after it picks up, dial the correct zone code, wait 2 seconds, and then speak.

  1. Is it possible to dial a phone number, wait for an answer, then dial additional numbers?
  2. Is it possible to put in a delay before speaking the message?

I tried putting commas between the stages without success. Anyone have an example of how this could be done?