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Looking for opinions & experiences of using HSDL modems over telephone company lease lines for TCP/IP communication to PLCs.
We are currently using "56K Data lines"(PLC side) tied into a frame relay to communicate via TCP/IP to our Cimplicity servers.
We also have existing stations with FSK telemetry utitilizing 2&4 wire lease lines.
I would like to see about upgrading these existing stations with PLCs, and still utitilize the existing lease lines for TCP/IP network
communications.
Lease line distance is any where from 2 to 10 miles with 1 to 2 "Telephone Central Offices" in between.
Thank you for any input!
Tim Morse
Onondaga County, Dept. WEP
We are currently using "56K Data lines"(PLC side) tied into a frame relay to communicate via TCP/IP to our Cimplicity servers.
We also have existing stations with FSK telemetry utitilizing 2&4 wire lease lines.
I would like to see about upgrading these existing stations with PLCs, and still utitilize the existing lease lines for TCP/IP network
communications.
Lease line distance is any where from 2 to 10 miles with 1 to 2 "Telephone Central Offices" in between.
Thank you for any input!
Tim Morse
Onondaga County, Dept. WEP