Comtech EF Data SMS-301 - Manual (Page 83)

Rev. 3 A-1
A
Appendix A.
REMOTE CONTROL OPERATION
This appendix describes the protocol and command structure for remote control and
status monitoring of the 1:1 Redundancy Switch.
•
Firmware number: FW/6055-1F and FW/6056
•
Software version: 1.1.7
A.1 General
Remote controls and status information are transferred via an EIA-485 (optional
EIA-232) serial communications link.
Commands and data are transferred on the remote control communications link as
US ASCII-encoded character strings.
The remote communications link is operated in a half-duplex mode.
Communications on the remote link are initiated by a remote controller or terminal. The
1:1 switch never transmits data on the link unless it is commanded to do so.
Command and status parameter selection will be determined by whether the backup
modem switching mode has been configured as Independent or Dependent. The 1:1
switch will default to Independent mode after a cold startup or hard reset has been
initiated.