XStream‐PKG‐E™EthernetRFModem–ProductManualv5.x00[2006.02.24]
5. RFCommunicationModes
Network configurations covered in this chapter are described in terms of the following:
• Network Topology (Point-to-Point, Point-to-Multipoint or Peer-to-Peer)
• RF Communication Type (Basic or Acknowledged)
• RF Mode (Streaming, Repeater, Acknowledged or Multi-Streaming)
The following table provides a summary of the network configurations supported.
Table5‐01. SummaryofnetworkconfigurationssupportedbytheXStreamRFModem
Point-to-Point
Definition An RF data link between two modems.
Sample Network Profile *
(Broadcast Communications)
Use default values for all modems.
Sample Network Profile *
(Acknowledged Communications)
All Modems: ATAM [auto-set MY (Source Address) parameter] **
ATDT FFFF [set Destination Address to 0xFFFF]
Basic Communication RF Modes Streaming Mode [p40], Repeater Mode [p41]
Acknowledged Communication RF Mode Acknowledged Mode [p
44]
Point-to-Multipoint
Definition RF data links between one base and multiple remotes.
Base: ATMY 0 [set Source Address to 0x00]
ATDT FFFF [set Destination Address to 0xFFFF]
Sample Network Profile *
(Basic Communications)
Remotes: ATAM [auto-set MY (Source Address) parameter] **
ATDT 0 [set Destination Address to 0x00]
Base: ATMY 0 [set Source Address to 0x00]
ATDT FFFF [set Destination Address to 0xFFFF]
ATRR 3 [set number of Retries to 3]
Sample Network Profile *
(Acknowledged Communications)
Remotes: ATAM [auto-set MY (Source Address) parameter] **
ATDT 0 [set Destination Address to 0x00]
ATRR 3 [set number of Retries to 3]
Basic Communication RF Modes Streaming Mode [p40], Repeater Mode [p41]
Acknowledged Communication RF Modes Acknowledged Mode [p
44], Multi-Streaming Mode [p46]
Peer-to-Peer
Definition
Modems remain synchronized without use of a master/server. Each
modem shares the roles of master and slave. MaxStream’s peer-to-
peer architecture features fast synch times (35ms to synchronize
modems) and fast cold start times (50ms before transmission).
Sample Network Profile *
(Basic Communications)
Use default values for all modems.
Sample Network Profile *
(Acknowledged Communications)
All Modems: ATAM [auto-set MY (Source Address) parameter] **
ATDT FFFF [set Destination Address to 0xFFFF]
ATRR 3 [set number of Retries to 3]
Basic Communication RF Mode Streaming Mode [p40]
Acknowledged Communication RF Mode Acknowledged Mode [p
44]
*Assumedefa ultvaluesforparametersnotlisted.Profilesdonotreflectaddressingimplementations.
**AM(Auto‐setMY)Commandmustbeissuedthroughaterminalprogramsuchastheoneincorporatedin
theX‐CTU‘Terminal’tab.
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