User`s guide

Appendix A. Technical Specifications
A-2 MS-4900, Rev. A
Remote control
functions
• Carrier bit rate and modulation type
• TDM channel selection
• Tune to new carrier frequency
• Statmux service selection (optional)
• Output port baud rate
• Permission/depermission output port
Remote receiver
control
TDM Control Channel: controls receiver hardware
configuration (carrier frequency, carrier bit rate, TDM channel
selection, output baud rate)
Optional Statistical Multiplexer control: controls data output
configuration (permission/depermission of individual data
services). Also, provides for data compression, Reed-
Solomon Forward Error Correction, Group addressing
Software functions
• Display current status
• Self-test diagnostics
• Display or modify RF carrier frequency
• Modify output port baud rate and configuration
• Process stat mux data feed
• Select TDM data channel
• Accept factory upload
Optional Daughtercards
Daughtercards are installed at the factory and provide optional output capabilities.
Two daughtercards are currently available: the Ethernet card and the 4-port card.
4-Port
Daughtercard
Asynchronous
connection (for stat
mux operation only)
Synchronous
connection
Supported rates in kbps: 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6,
and 115.2. (Baud rates 57600 and 115200 do not support
XON/XOFF or RR/RNR flow control.)
RS-232 on DB-9 connectors.
Synchronous RS-422 rates available in “0.1% if carrier bit rate”
steps up to carrier capacity, less control channel and optional
Reed Solomon overhead.
Time-division
demultiplexer
Extracts control channel and up to three data services from the
nine services on the carrier. Allows simultaneous extraction of
one asynchronous service with two synchronous services, or
one stat mux service and one or two synchronous services.
Statistical
demultiplexer
Up to four asynchronous ports can output stat mux data. Ports
are individually permissionable.
Ethernet
Daughtercard
Data rate 1 Mbps sustained TCP/IP throughput
2 Mbps sustained UDP throughput
Management protocol Centralized management using SNMPv2.
Output support 10BaseT Ethernet, AUI, and RS-422
Remote control
functions (additional)
• IP addresses, HDLC addresses
• Enable/disable SNMP management
• Enable/disable TFTP
• Enable/disable TCP/IP session auto-start
Remote receiver
control (additional)
Set IP addresses for receiver, host, gateway, and SNMP
manager.
Software functions
(additional)
Process HDLC and Ethernet data channels
TCP/IP connections RFC-compliant