Specifications

9261-7974 Issue 06
ESFIRECODER - Emergency Services Firecoder
Page 50
www.multitone.com
For PC use, it is recommended to set the Modem Timing Speed parameter to 22, and to run the PC-
>TA serial port at 57600 baud.
6.57 Thorcomm Modems
These are RLC-220 modems with Thorcomm RMIP2 software V2.43 or later, set-up to communicate
with the nodes using a standard RS232 serial port, normally set to 9600 baud 8 bit, No parity, 1 stop
bit. CTS/RTS handshaking is used to handshake the data.
The packet modems can be configured for many different operating modes. This must be initially done
using the Thorcomm supplied program 'PROG' (great naming!).
The 'PROG' program requires another Thorcomm program 'THORIO.COM' to be run before it. This
stays loaded in memory, and the combination of the two is known to be prone to crash if any other
comms software is run after it. It will also not run properly on a modern fast PC (most Pentium class or
later) so keep hold of an old PC on which to run it!
When programming the modems, they should be set to a call-sign of zero as the actual 'My Call' value
is automatically set by the Firecomms software to the current node number. This allows all modems
for a particular scheme to be programmed with the same set-up, allowing easy interchange.
When using a MDS700 gateway system, it may be possible to remotely program the modems using
this software.
6.58 LAN/WAN Connections
All Multitone Windows based software supports connections to remote devices over a network running
a TCP/IP protocol stack. Depending on the network configuration, this will normally use the "LAN" or
"WAN" MTA types, but a comm. port can also be redirected over the network to a remote terminal
server for specific applications.
6.58.1 LAN MTA
Each LAN MTA allows a single permanent connection to be made to another LAN or WAN
MTA (Multitone or others), or to a LanModem interface. The IP and GD-92 addresses are hard
coded in the MTA parameters. The LAN MTA can also be configured to accept incoming
connections.
The "Connected To" parameter must contain the GD-92 node address of the remote node.
If the MTA can "listen" for incoming connections, the port number to listen on must be set in
the "Listen Port" parameter. This defaults to the MTA number (1..n) + 6000.
If the MTA should attempt to connect to a remote node, the IP address and port of the remote
node should be set in the "Remote Address" parameter.
6.58.2 WAN MTA
Each WAN MTA allows a single "dial-up" connection to be made to another LAN MTA
(Multitone or others), or directly to a Lantronix Server. The LAN Table allows mapping of GD-
92 nodes to IP addresses.