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RCS20 M:N Redundancy Switch
Remote Operations
A.3.7 Opcode <2200h> Relay Command or Query to Modem
<1>
Channel Number
<n>
RLLP Packet from
Modem
A.3.8 Opcode <2202h> Set RCS20 Configuration
<2>
Nonvolatile Bytes
<1>
Number of Channels
<1>
Nonvolatile Bytes per
Channel
<1>
*Channel 0
Configuration
<2>
*Channel 0 Mod
Backup Delay
<2>
*Channel 0 Demod
Backup Delay
<1>
*Channel 0 Mod
Backup Configuration
Command Data Field (n+1 bytes):
Channel number for the modem for which the message is to be
relayed (0 to 9 for the RCS20)
Complete, addressed RLLP message block with (variable number of
bytes) sync byte, source address, destination address, Opcode, byte
count, data field and checksum) (Contents of Response Packet Data
Field: Dependent upon message relayed to modem.
Command Data Field:
Number of nonvolatile RCS20 configuration memory bytes, including
these 2 bytes (221 decimal for RCS20)
Maximum number of prime and backup channels available to the
RCS20 switch. (10 decimal for RCS20 as of Release 1.0)
Number of nonvolatile memory bytes per channel. This number may
vary with the release number. (10 bytes for RCS20 as of release 1.0
and 13 bytes as of release 4.0)
**Remote M&C developers must make use of this value to find out how
many bytes per channel are being transmitted.
Bit 0 = Modulator present
Bit 1 = Demodulator present
(0 = not present, 1 = present)
0h - BB7h in tenths of a second; decimal point implied
0h - BB7h in tenths of a second; decimal point implied
Bit 0 = Backup 1 assigned to this modulator
Bit 1 = Backup 2 assigned to this modulator
(0 = not assigned, 1 = assigned)
A–27
Revision 15
MN-RCS20 and CD-RCS20
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