by Walt Medak

Q:  We have three offices located around the city, each with it’s own Definity system.  One is a version 9.5; another one is a version 11.  I can access both of those through our LAN to do my programming.  However, the other location is still a version 8 and doesn’t give me the ability to use an IP connection to do programming.  I have to use the modem connection, and it’s really slow.  Is there a better way to connect?

A:  Probably the best option for your situation is a device called a terminal server.  One of the ones we used to use was called a Lansat, so I’ll use that as a generic term since the company that made them doesn’t appear to be around any more.  There are still several companies that make similar devices though.  Basically, the Lansat has an RS-232 serial connection on one side and an Ethernet connection on the other.  You would connect the Ethernet port on the Lansat to your LAN.  This would give you access to the device from anywhere on your LAN, or even from home if your network is set up to allow access over the internet.  You would just set up your DSA or ASA to point to the IP address assigned to the Lansat.  The serial port on the Lansat is connected to the “Terminal” port on the back of the Definity, sometimes labeled “TERM”.  Since this is the same port the programming, or “SAT” terminal uses, a switchbox is usually installed so both devices can be used.  The switchbox would normally be left in the position that connects the Lansat to the switch.  If someone happens to be in the switch room to do some programming, a quick flip of the switch will allow the “SAT” terminal to work without having to move any cables around.  You just have to make sure to put the switch back in the Lansat position when you’re done.  And, the best thing about the Lansat is the connection is considerably faster than using a modem.