Jeff: Much of the earlier 911 equipment had the same look and feel of 1A2 mixed with Comkey. The reality is that answering the phone calls in a 911 center can be done from any type of phone. It's the caller information that appears on the operator's computer monitor that really does the work.
Many dispatch centers used (and continue to use) 1A2 consoles manufactured by Plant Equipment, Inc. Their stuff was primarily designed for this type of application and had more flexibility, like conference capabilities.
Most 911 centers now are 100% integrated using a CTI-type package. Still, there are probably many small towns with a couple of rotary-dial 1A2 sets doing a fine job.
