Anyone know what PSTN technology they use to handle this? Basically, the client has a direct (no ring) line to the broker office at barclays, jpmorgan, etc. We assume the client hits a speed dial button that takes an analog off hook which direct connects to the broker line. (no ringing) Almost like a overhead paging device. Hit a speed dial, analog goes off hook, person makes anouncement, etc.
If it is analog... I would assume FXO and not FXS?
We are still researching ourselves... but it could also be ISDN and it maybe an H323 dial peer from CUCM to the router. But any background info someone could provide would be great! Right now, the client has an old PBX and is a little foggy on what is currently built in it.