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G.703 Sub-Rate Multiplexer
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Description Valiant Communications introduces its G.703, 64Kbps Sub-Rate Multiplexer.
Valiant's G.703, Sub-Rate Multiplexer multiplexes
six 9.6Kbps RS232 asynchronous data channels to a 64Kbps, G.703 co-directional, 4 wire
synchronous data channel.
The front panel has six, RS232 data ports into which upto six, RS232 asynchronous data
channels @ 9.6Kbps each may be connected. The six RS232 asynchronous data channels @
9.6Kbps are multiplexed into a 64Kbps, G.703 co-directional, 4 wire synchronous data
channel, which is accessed from the system backpanel (rear).
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The equipment uses data buffering and
phase-lock-loop techniques to ensure error free multiplexing and demultiplexing between
the synchronous and asynchronous data ports. Front panel LED indicators indicate presence
of Transmit and Receive data signal on each of the data ports.
The equipment operates on a nominal -48VDC Input (-40VDC to 60VDC Input). The system also
provides two dry-contact relay alarm outputs (normally open) on the backpanel (rear) which
close to indicate the presence of a system alarm.
Applications
- Thin-Route Telephony satellite, radio and data networks
- Establishing Multiple Telemetry Links
- SCADA Networks
- To transport multiple compressed voice channels interface with
VCL-TRLD to provide upto six voice channels on 64Kbps links.
- Interface to 64Kbps radios
External Interfaces And
Connectors
VCL G.703 Sub-Rrate Multiplexer provides the following
interfaces to the external world:
- -48V input for on-board power supply
- 2 External alarm extensions for visual and audible alarms.
- 6x RS 232, 9.6Kbps asynchronous data interface(s)
- 1x64Kbps, G.703, Co-directional synchronous data interface
Front View
Block Diagram
Related Links
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