Are there any advantages for a County Government of Centrex vs. a PBX networked to support 3 facilities. The PBX would have a T-1 coming in to the Courthouse and fiber feeds to 1 of the sites. The 3rd site has the ability to lease dry copper pairs for a minimal fee that we could create our own T-1 to network site 3. No monthly charge to network site 2 and a minimal charge to network site 3.

The phone company is offering Centrex service.

We are offering the 3 systems networked together to provide 4-digit dialing and the ability to eliminate many lines and share the T-1 for incoming and outgoing trunks.

Just curious as I am not overly familiar with Centrex.